SanicroTM 25 is a high-alloy austenitic stainless steel tube engineered for use in next-generation clean and efficient coal-fired power boilers. It has the highest creep strength of commercial heat-resistant stainless steels, enabling it to withstand metal temperatures up to 700°C. SanicroTM 25 handles the demanding conditions of ultra-supercritical boilers, allowing plants to safely and reliably increase efficiency through higher operating temperatures and pressures.
Using Steel In Solar Racking and MountingJMCSteelGroup
When it comes to solar installations, steel provides a number of advantages that you may not already know. Steel supplier Wheatland Tube and racking manufacturer Patriot Solar Group detail the latest in steel-working knowledge and how best to apply the metal in solar racking and mounting.
in this presentation, Ash Corrosion has been explained. Causes, how to solve and common problem about this kind of corrosion prepared. This is a power point version.
Using Steel In Solar Racking and MountingJMCSteelGroup
When it comes to solar installations, steel provides a number of advantages that you may not already know. Steel supplier Wheatland Tube and racking manufacturer Patriot Solar Group detail the latest in steel-working knowledge and how best to apply the metal in solar racking and mounting.
in this presentation, Ash Corrosion has been explained. Causes, how to solve and common problem about this kind of corrosion prepared. This is a power point version.
Welding Studies on WB36 for Feed Water Pipingijceronline
To increase efficiency, reduce emissions, cost and to reduce weight of boiler per MW, the power manufacturing sectors are going towards the once through technology (super critical boiler) instead of sub- critical. Once through supercritical (OTSC) technology has become a focal point for effective utilization of coal-based thermal power generation sector in India. Another main advantage of moving towards OTSC technology is reducing the weight of the boiler per MW, which can be done by going for material capable of handling higher pressure and temperature than the conventional material. So, in order to keep pace with these technologies, research on newer materials for every boilers line, which can operate at both higher pressure and temperature, has been initiated. So, in this article, we have taken one such feed water system and headers, where WB 36 steel (15 MiCuMoNiNb5) can be used instead conventional standard carbon steel like A106 grade B or C, which are usually used. For super critical, ultra super critical power plants this conventional materials like A106 grade B or C, leads to very thick piping system. V&M has developed WB 36 steel (15 MiCuMoNiNb5) for high pressure piping of boiler feed water system. This heat-resistant, copperalloyed ferritic steel 15MiCuMoNiNb5 has been widely used in European nuclear and conventional power plants for decades for feed water system. This widespread application is due to the toughness and strength, caused by the precipitation of copper, that are exhibited even at elevated temperatures which other fine-grained structural steels have at room temperature. The aim of this project “Welding Studies on WB36 Steel for Feed Water Piping” was taken to understand the metallurgy and the behavior of the new materials under different manufacturing operations.
Sand casting is ideal for an array of products, ranging from gears and pulleys on the small side to pump components and transmission cases on the large end. Learn more about Avalon Precision Metalsmiths' sand casting capabilities.
The steel manufacturing industry has been rightly called the backbone of the global economy by Adam Smith. The alloy steel, the carbon steel, and many other kinds of steel with specific properties which make them unique and critical at the same time. Hence, making them a primary requirement of most industrialists.
For more details visit : http://apilinepipes.com/products/api-5l-pipe/lsaw/api-5l-x52-psl-1-lsaw-pipe/
Effect of LVOF Sprayed Coating in Oxidation & Hot Corrosion Performance of Bo...IJRES Journal
Oxidation and hot corrosion is the major degradation mechanism of failure of boiler and gas turbine components. These failures occur because of the usage of wide range of fuels such as coal, oil at increased temperatures. To obviate these problems, in current investigation Al2O3+40%TiO2 powder has been deposited on Boiler Steel SA-192by LVOF (Low velocity oxy fuel process). The oxidation and hot corrosion performances of Al2O3+40%TiO2 coated as well as bare Boiler Steel SA-192 has been evaluated in air and with aggressive environment Na2SO4+60%V2O5 under cyclic conditions at an elevated temperatures of 8500C & 9500C. The kinetics of the corrosion is approximated by weight change measurements made after each cycle for total duration of 50 cycles. Each cycle consists of keeping the samples for 1 hour duration in Kanthol wire tube furnace at 8500C and 9500C followed by 20 minute cooling in ambient air. Weight change data has been taken after each cycle by digital electronic balance machine with an accuracy of 1 milligram. Graphs have been plotted between weight gains per surface area to number of cycles. Boiler Steel SA-192 has shown poor performance in oxidising and in hot corrosion environment it suffered intensive spallation in the form of removal of scales. To improve oxidation and hot corrosion resistance Al2O3+40%TiO2 coating has been successfully deposited on Boiler Steel SA-192 by Low velocity oxy fuel process using CERAJET spray nozzle (A proprietary item of MECPL, Jodhpur). Coating has shown approximately 90% & 92% improvement respectively in the oxidation and hot corrosion resistance of Boiler Steel SA-192have been observed .
Savoy Piping Inc., Supply, API 5L Pipes, API 5L line Pipes, API 5L x42,x52,x60,x65,x70, A333 Gr.6, A691, A671, A672, A335 P5,P9,P11,P22,P91, Hic Pipes, Sour Service Pipes, API 5L Pipes, API 5L Line Pipes
Since so many years a problem occurs in KSB Pump Va mbori for casting process i.e. cracks occurs in the castings & it is repeated one. Therefore the compan y has given opportunity to me to solve this problem . In case of steel casting there are mainly cracks & also blo w holes induced due to the casting procedure. There are many factors for the casting defects .The factor is unev en material feeding in casting & also due to the mo uld material & also the core material. These cracks finally brea k directly the component of the casting i.e. in cas e of pump the casting component is like Impeller,Volute casing & casing cover. At the time of feeding of steel material in to the casting the material is in liquid us form i.e. it i s hot material & this material is feeding into casting at the time o f feeding it develop different region of heat. At o ne side the temp is high &at other side the temp is low this also pr oduce cracks. To simulate that casting we use the M AGMA SOFTWARE for simulation & validate it using NDT.
Intelligent refractory technology for the primary aluminium industryRefratechnik Group
With decades of experience in refractory technology for the aluminium industry, Refratechnik is one of the world's most innovative companies in this field.
For your activities in the aluminium industry, we offer comprehensive and customized refractory solutions. Our company's aim is to respond to the significantly increased demands made on refractory materials during recent years, by developing new and high-grade products.
Welding Studies on WB36 for Feed Water Pipingijceronline
To increase efficiency, reduce emissions, cost and to reduce weight of boiler per MW, the power manufacturing sectors are going towards the once through technology (super critical boiler) instead of sub- critical. Once through supercritical (OTSC) technology has become a focal point for effective utilization of coal-based thermal power generation sector in India. Another main advantage of moving towards OTSC technology is reducing the weight of the boiler per MW, which can be done by going for material capable of handling higher pressure and temperature than the conventional material. So, in order to keep pace with these technologies, research on newer materials for every boilers line, which can operate at both higher pressure and temperature, has been initiated. So, in this article, we have taken one such feed water system and headers, where WB 36 steel (15 MiCuMoNiNb5) can be used instead conventional standard carbon steel like A106 grade B or C, which are usually used. For super critical, ultra super critical power plants this conventional materials like A106 grade B or C, leads to very thick piping system. V&M has developed WB 36 steel (15 MiCuMoNiNb5) for high pressure piping of boiler feed water system. This heat-resistant, copperalloyed ferritic steel 15MiCuMoNiNb5 has been widely used in European nuclear and conventional power plants for decades for feed water system. This widespread application is due to the toughness and strength, caused by the precipitation of copper, that are exhibited even at elevated temperatures which other fine-grained structural steels have at room temperature. The aim of this project “Welding Studies on WB36 Steel for Feed Water Piping” was taken to understand the metallurgy and the behavior of the new materials under different manufacturing operations.
Sand casting is ideal for an array of products, ranging from gears and pulleys on the small side to pump components and transmission cases on the large end. Learn more about Avalon Precision Metalsmiths' sand casting capabilities.
The steel manufacturing industry has been rightly called the backbone of the global economy by Adam Smith. The alloy steel, the carbon steel, and many other kinds of steel with specific properties which make them unique and critical at the same time. Hence, making them a primary requirement of most industrialists.
For more details visit : http://apilinepipes.com/products/api-5l-pipe/lsaw/api-5l-x52-psl-1-lsaw-pipe/
Effect of LVOF Sprayed Coating in Oxidation & Hot Corrosion Performance of Bo...IJRES Journal
Oxidation and hot corrosion is the major degradation mechanism of failure of boiler and gas turbine components. These failures occur because of the usage of wide range of fuels such as coal, oil at increased temperatures. To obviate these problems, in current investigation Al2O3+40%TiO2 powder has been deposited on Boiler Steel SA-192by LVOF (Low velocity oxy fuel process). The oxidation and hot corrosion performances of Al2O3+40%TiO2 coated as well as bare Boiler Steel SA-192 has been evaluated in air and with aggressive environment Na2SO4+60%V2O5 under cyclic conditions at an elevated temperatures of 8500C & 9500C. The kinetics of the corrosion is approximated by weight change measurements made after each cycle for total duration of 50 cycles. Each cycle consists of keeping the samples for 1 hour duration in Kanthol wire tube furnace at 8500C and 9500C followed by 20 minute cooling in ambient air. Weight change data has been taken after each cycle by digital electronic balance machine with an accuracy of 1 milligram. Graphs have been plotted between weight gains per surface area to number of cycles. Boiler Steel SA-192 has shown poor performance in oxidising and in hot corrosion environment it suffered intensive spallation in the form of removal of scales. To improve oxidation and hot corrosion resistance Al2O3+40%TiO2 coating has been successfully deposited on Boiler Steel SA-192 by Low velocity oxy fuel process using CERAJET spray nozzle (A proprietary item of MECPL, Jodhpur). Coating has shown approximately 90% & 92% improvement respectively in the oxidation and hot corrosion resistance of Boiler Steel SA-192have been observed .
Savoy Piping Inc., Supply, API 5L Pipes, API 5L line Pipes, API 5L x42,x52,x60,x65,x70, A333 Gr.6, A691, A671, A672, A335 P5,P9,P11,P22,P91, Hic Pipes, Sour Service Pipes, API 5L Pipes, API 5L Line Pipes
Since so many years a problem occurs in KSB Pump Va mbori for casting process i.e. cracks occurs in the castings & it is repeated one. Therefore the compan y has given opportunity to me to solve this problem . In case of steel casting there are mainly cracks & also blo w holes induced due to the casting procedure. There are many factors for the casting defects .The factor is unev en material feeding in casting & also due to the mo uld material & also the core material. These cracks finally brea k directly the component of the casting i.e. in cas e of pump the casting component is like Impeller,Volute casing & casing cover. At the time of feeding of steel material in to the casting the material is in liquid us form i.e. it i s hot material & this material is feeding into casting at the time o f feeding it develop different region of heat. At o ne side the temp is high &at other side the temp is low this also pr oduce cracks. To simulate that casting we use the M AGMA SOFTWARE for simulation & validate it using NDT.
Intelligent refractory technology for the primary aluminium industryRefratechnik Group
With decades of experience in refractory technology for the aluminium industry, Refratechnik is one of the world's most innovative companies in this field.
For your activities in the aluminium industry, we offer comprehensive and customized refractory solutions. Our company's aim is to respond to the significantly increased demands made on refractory materials during recent years, by developing new and high-grade products.
Low-Alpha Technology: The innovative refractory solution for steel devices su...Refratechnik Group
In modern steel production, plant reliability is playing an increasingly important role. Innovative and comprehensive refractory concepts are decisive when it comes to optimizing steel production processes in terms of performance and costs. In close cooperation with our customers, we develop, test, and supply perfect solutions.
FESCOR is one of the leading importers, exporters and suppliers in Pakistan, USA, China and Middle East which via its channels of professional and associated offices / companies overseas offers a wide variety of services to many organizations in establishing and mutual economic cooperation and realization of export and import program.
FESCOR is mainly supplier of Carbon Steel Seamless / Welded Pipes and Fittings, Stainless Steel Seamless Pipes and Fittings, Alloy Steel Pipes and Fitting, Galvanized Iron Seamless Pipes and Fittings, Flanges and Industrial Valves, Actuators, Control Valves and all kind of Pumps.
FESCOR is backed by powerful strengths of well-known European and Chinese steel mills with abundant medium & thick steel resources, integrates the advantage of steel cutting and machining process to develop the downstream industry chains. After years of steady development, we have established good business relationship with these steel mills and became the major supplier of special pipes, tubular, Fitting, Valves & Pumps.
FESCOR also engineered-solutions provider and service enterprise to meet the needs of the industries.
SINOM GROUP CO., LTD. is one of the largest manufacturer of copper mould tube in China. Based on customers requirement, we design, manufacture and install the square copper mould tube, round copper mould tube, beam blank, rectangular copper mould tube, diamond type, non-standard type etc.
The Advantages of Using Extrusions to Solve Thermal Management ChallengesDesign World
Driven by the need to improve fuel economy and reduce carbon emissions, the automotive industry has focused on developing Electric-drive vehicles (EDVs) as well as the lightweighting of vehicles. This increasing trend has been supported by major manufacturers such as Ford and Tesla. However, with any change in technology new challenges develop. Thermal Management of these vehicles is a large challenge, along with the need to structurally hold the components in place.
Est group harbin urea conference 2014 pap paper v1 englishJim Novak (吉因龙)
An Improved Tube Plugging Technique for Ammonia and Urea Plant Heat Exchangers. Eliminates Welding, Reduces Downtime and Increases Reliability
We will provide details documenting the development of Pop-A-Plugs specifically for this service and how this significantly reduces the shutdown time required to seal tubes in such service. Everybody knows that welded plugs in high pressure heat exchangers in urea plants are prone to leaking problems as the proper quality of the welds is difficult to assure. Pop-A-Plug® System plugs promise a much better reliability than welded plugs.
Intelligent Refractory Technology for the Aluminium Industry. Casthouse. Refratechnik Group
High-performance products and intelligent refractory concepts.
Refratechnik is one of the most important companies in the refractory industry and, with its shaped and unshaped products, a global partner of the cement, steel and aluminium industry.
Monolithic products, soon to include pre-shaped products (bricks and prefabricated components), are playing an increasingly important part in Refratechnik's service spectrum, enjoying a notable increase in sales and commanding the highest of respect on the market.
Improved Material and Enhanced Fatigue Resistance for Gear ComponentsALD Vacuum Systems Inc.
Abstract
This paper shows the latest progress in steel grades and in case hardening technology for gear components.
To answer the demand for fuel-efficient vehicles, modern gear boxes are built much lighter. Improving fatigue resistance is a key factor to allow for the design of thin components to be used in advanced vehicle transmissions. The choice of material and the applied heat treat process are of key importance to enhance the fatigue resistance of gear components.
By applying the technology of Low Pressure Carburizing (LPC) and High Pressure Gas Quenching (HPGQ), the tooth root bending strength can be significantly enhanced, compared to traditional heat treatment with atmospheric carburizing and oil quenching.
Besides heat treatment, significant progress has been made over the past years on the steels being used for gear components. The hardenability of case hardening steels such as 5130H, 5120H, 20MnCr5, 27MnCr5, 18CrNiMo7-6 etc. has been stepwise increased in recent years. An important factor for fatigue resistance is the grain size after heat treatment. Therefore, grain size control is a key goal when developing new modifications of steel grades.
After enhancing grain size control, it was possible to increase the carburizing temperatures over the past years from 930°C to 980°C (1700°F to 1800°F) which resulted in shorter heat treatment cycles and thus in significant cost savings.
With the introduction of new microalloyed steels for grain size stability, carburizing temperatures can now be even further increased to temperatures of up to 1050°C (1920°F), leading to even more economic process cycles. By adding microelements such as Niobium or Titanium in the ppm-range, nitride and carbonitride-precipitates are formed. These precipitates effectively limit the grain-growth during the heat treatment process.
BIC Magazine - Tapered Pressure Seal Eliminates Diaphragm in Heat Exchanger
0SAV0082_SMT_SANICRO25_Brochure_A4
1. Sanicro™ 25 – the high-performance boiler tube for high-efficiency,
ultra-supercritical coal-FIRED power production
Bring on
the heat
700°C
600°C
AUSC
TODAY
2. tion
For the foreseeable future, despite great progress with
renewables, we will still need coal-fired power plants.
The good news is that now, thanks to more advanced
technology, it is possible to produce cleaner energy
than ever with coal.
combatting oxidation and corrosion
One big challenge is finding advanced stainless steel
materials that enable the superheaters and reheaters
in ultra-supercritical steam boilers to combat steam
oxidation and corrosion at higher temperatures. Some
have proposed using a modified stainless steel alloy
like TP310HCbN (HR3C™)*, but customers tell us, “this
is not enough.” The other alternative is to go all the way
to a higher nickel alloy tube, but why pay a big premium
when an lower nickel alloy tube can do the same job?
This is where Sanicro™ 25 (UNS S31035) from Sandvik
comes in – letting you migrate upward in temperature.
A METAL THAT CAN TAKE THE HEAT
Our top-end tube, Sanicro™ 25 has the highest creep
strength among the commercial heat-resistant auste-
nitic stainless steels. And since the metal is designed
to help you withstand metal temperatures of 620°C
(1150°F) on up to 700°C (1290°F) with pressures of
35 MPa (5000 psi), it can help you safely and reliably
achieve higher efficiency in ultra-supercritical boilers.
In short, Sanicro™ 25 can handle the challenging de-
mands being placed on coal-fired energy. So get ready
to turn up the heat, because that’s what we are doing.
Key benefits of Sanicro™ 25
• Very high creep strength
• High oxidation resistance
• High structural stability
• Good fabricability
• Good welding properties
OUR PLANET
DESERVES SUPERIOR
TECHNOLOGY
Solving today’s energy needs will require bold action, innovative new
thinking and plenty of hard work. The challenges are seemingly contra-
dictory: people want more and more electricity, lower prices, reduced CO2
emissions and cleaner air. But how do we solve this dilemma using coal?
Sanicro™ 25 is a high-alloy austenitic stainless steel tube that has
been engineered for the next generation of clean and efficient
coal-fired power boilers.
2 Sanicro™ 25 – Advanced coal-fired power production
* HR3C is a trademark of Sumitomo Metal Industries
3. 3Sanicro™ 25 – Advanced coal-fired power production
3Sanicro™ 25 – Advanced coal-fired power production
5. 5Sanicro™ 25 – Advanced coal-fired power production
alone we have delivered 60 million meters of tube for
hundreds of projects, many of them in China.
TOP 100 GLOBAL INNOVATOR
There’s a reason why Forbes Magazine ranked us as
one of the world’s Top 100 most innovative companies.
With 47,000 employees in 130 countries, we are work-
ing closely with our customers to develop energy-sav-
ing products and tackle the metallurgical and material
challenges of the future.
NEW IMPROVED BOILER TUBE
Sanicro™ 25 is our latest innovation – the best-
performing austenitic boiler tube on the market today.
It helps you future-proof your energy production by
letting you migrate upward to metal temperatures of
620°C (1150°F), 650°C (1200°F) or a maximum of 700°C
(1290°F). This way, you can continue to increase the
temperature and pressure in your boilers, while still im-
proving the efficiency of coal conversion. This not only
saves money over the lifecycle of the boiler, it reduces
emissions due to less coal consumption.
Our focus on advanced stainless steel and specialty
alloys gives you a competitive advantage. You gain
a trusted partner with more than 50 years of exper-
ience in providing high-quality stainless tube for
power plants. Not to mention an innovative steel-
making heritage dating back more than 150 years.
If you’re familiar with the Sandvik name, you also know
that we provide advanced stainless steel tube to some
of the most demanding industries on earth. These in-
clude the safety- and performance-conscious nuclear,
automotive, petrochemical and oil and gas sectors.
GAME-CHANGING TECHNOLOGIES
Over the years, we’ve collaborated closely with
our customers to design key metals and parts for
next-generation wind turbines, fuel cells, fuel lines and
fuel rails. Recently, our PressurfectTM
high-pressure
tube for gasoline direct injection and CNG engines was
singled out by the industry as a “game-changer.”
For many years, we’ve also teamed up with the energy
sector to boost productivity. In the nuclear industry
THE GOLD
STANDARD
IN STAINLESS
STEEL
6. 6 Sanicro™ 25 – Advanced coal-fired power production
Sanicro™ 25 has already received approvals from
organizations such as ASME, VdTüV and more. Our
latest certification by the Chinese Pressure Vessel
Committee means that our high-pressure boiler
tube is fully compliant for the design, fabrication,
assembly and inspection of the most demanding
boilers. In other words, we really are “fit for purpose.”
In such a critical industry, there is simply no margin
for error. To ensure the tough requirements of this
high-quality tubing, we run a battery of quality control
tests. These are carefully designed to assess every-
thing from improved static tensile strength, creep
strength and crack resistance to immersion, dimen-
sional tolerance, cleanliness and hardness control.
QUALITY CONTROL IN EVERY STEP
When it comes to manufacturing, we guarantee con-
sistency in product quality that comes from controlling
the entire steelmaking process – from steel melting to
finished tube. Every tube has an identification number
and can be traced back to the original batch should a
question arise.
NEW APPROVALS
OPEN NEW
POSSIBILITIES
APPROVALS & CERTIFICATIONS
• Chinese Pressure Vessel
Committee Approval
CSCBPV BV-ME-210
• European Particular Material
Appraisal (PMA)
• VdTüV Material Data Sheet 555,
09.2008
• ASME Code Case 2753, Section I
and 2752, Section VIII Division I
CHEMICAL COMPOSITION (nominal) %
C Si Mn P S Cr Ni W Co Cu Nb N
≤0.1 0.2 0.5 ≤0.025 ≤0.015 22.5 25 3.6 1.5 3.0 0.5 0.23
9. 9Sanicro™ 25 – Advanced coal-fired power production
Until recently, designers of superheaters or re-
heaters for higher efficiency ultra-supercritical
coal-based power plants had to choose from two
options: migrate up to higher nickel-based tube
alloys or increase the wall thickness of a standard
alloy tube, to remain in the safe zone.
Now there is another path. Because Sanicro™ 25 has
a maximum allowable stress value that is higher than
any other iron-based austenitic stainless steel (see
diagram), you can reduce wall thickness while still han-
dling the same pressure. This allows for lighter, more
efficient and compact designs at a more competitive
price. A better, more compact boiler design also means
that you will use less material overall.
SUPERIOR CREEP STRENGTH
Five years after test installations in different European
boilers, the Sanicro™ 25 tubes are still in good con-
dition. Corrosion behavior and strength are excellent.
As shown in the diagram, Sanicro™ 25 has a much
higher creep strength at 100,000 hours than other
commercial grades, according to the TÜV standards.
For example, it achieves 180 MPa at 625°C (1160°F) and
155 MPa at 650°C (1200°F). The test also showed that
this stainless steel has a creep strength of about 100
MPa at 700°C (1290°F) for 100,000 hours – with recent
indications that it will probably reach 99+/-3 MPa.
THINNER WALLS,
BETTER DESIGN
Standard iron-based
austenitic tube
Sanicro™ 25 high-
efficiency tube
Maximum allowable stress
0
20
40
60
80
100
120
140
160
180
200
600 650 700 750
Temperature (C)
Stress(MPa)
TP347HFG
UNS S30432
TP310HCbN
Sanicro 25
TP310M0CbN
UNS N06674
Alloy 617
thinner WALL, higher performance
10. 10 Sanicro™ 25 – Advanced coal-fired power production10
Due to its high chromium content, Sanicro™ 25 has
unique, high hot corrosion resistance properties.
These are more than sufficient for upgrading your
superheater or boiler to handle temperatures of
620°C, 650°C or even 700°C (1290°F), which is where
we carried out our comparative tests.
In the hot corrosion tests, we repeatedly covered the
tube with ash and exposed it to gas flow for 3,000
hours. Then we put one of our competitor’s best steels
through the same tests. As shown in the diagram to the
right, the Sanicro™ 25 stainless steel tube clearly had a
much lower corrosion rate.
We also carried out oxidation resistance testing using
isothermal experiments as well as discontinuous tests
with cooling to room temperature after various lengths
of time. Both sets of tests showed a very low mass rate
change. Then we performed oxidation tests in aqueous
steam at 750°C (1380°F), which also demonstrated that
Sanicro™ 25 offers very good oxidation resistance.
MADE FOR
THE HEAT
500
400
300
200
100
0
0 500 1000 1500 2000 2500 3000
TP310MoCbNSanicro™ 25
Time [hours]
600
Weight loss [mg/cm2
]
0.
1.
2.
3.
4.
5.
0 2500200015001000500
Mass change [gm-2
]
6.
3000
Sanicro™ 25 TP310HCbN UNS S30432 UNS SN06617 TP347H
Time [hours]
Hot corrosion tests at 700°C (1290°F) up to 3,000 hours.
Oxidation in air, discontinuous test at 750°C (1382°F).
13. 13Sanicro™ 25 – Advanced coal-fired power production
Sanicro™ 25 is easy to weld, bend and fabricate.
This is vital if you are striving to keep manufacturing
costs down and simplify your fabrication processes.
Since Sandvik has done extensive testing of com-
patible welding and filler metals, we can advise you
on the optimal process and materials.
Since good weldability is vital, you’ll be happy to know
that this is an area in which Sanicro™ 25 excels. As
with all austenitic stainless steels, it has low thermal
conductivity and high thermal expansion. We there-
fore recommend tungsten inert gas welding (TIG/
GTAW/141) with low heat input and interpass tempera-
ture to reduce the risk of hot cracking. Preheating and
post-weld heat treatments are not normally necessary.
As the filler metal, we recommend either Sandvik Sani-
cro™ 53 (alloy 617) or alloy 617 mod for optimal results.
BETTER BENDING
In addition to favorable weldability, the metal is also
easy to bend into the desirable shapes. This opens up
SIMPLIFICATION
OF FABRICATION
CHEMICAL COMPOSITION - filler metal
CHEMICAL COMPOSITION WEIGHT %
C Si Mn P S Cr Ni Mo W Co Ti Al Fe
0.08 ≤1.0 ≤1.0 ≤0.010 ≤0.010 22.5 53.5 9 ≤0.5 12 ≤0.6 1 ≤1.0
the possibility to optimize your heat transfer surface
in a smaller space. To test this, we put Sanicro™ 25
through four different bends - two different 180° bends
and two different 90° bends. The studies showed that
it would be possible to safely and efficiently maximize
the heat transfer efficiency with a bending radius of up
to 30%. In short, this high-performance material allows
you to design smaller boilers that still provide a very
high efficiency level.
The bending trails were preformed successfully, the visual exa-
mination showed no cracks in the tube walls. Above is the results
from bending trails of Sanicro™ 25, 180° (A) and 90° (B) bends.
(A) (B)
14. 14 Sanicro™ 25 – Advanced coal-fired power production14
At Sandvik, we know that there is a clear relationship
between safety and quality. Better, more reliable,
quality products improve the safety of the people
who work with them – resulting in less downtime and
higher productivity.
For many of our customers working with steam boilers
or other demanding industrial applications, this em-
phasis on “safety first” is a vital prerequisite. As one
customer told us: “Everything starts with safety, or ev-
erything stops.” Our “Zero Accidents” ambition applies
to our staff, customers, suppliers, strategic partners
and the environment.
A SAFER PRODUCT MEANS LESS DOWNTIME
We apply safety measures in every step of our tube
manufacturing process, backed by complete doc-
umentation and traceability. So when you choose
Sanicro™ 25, you are also making a safe choice. All
our hours of testing for creep and corrosion aren’t just
about return on investment – they’re about making a
safer, more reliable product for you.
QUALITY +
KNOWLEDGE
= SAFETY
17. 17Sanicro™ 25 – Advanced coal-fired power production
As a Sandvik customer you not only get the support
of our local sales representatives, you also gain ac-
cess to our team of 2,700 RD and materials experts
- one of the largest of its type in the world.
Our metallurgical experts are working hard to develop
new advanced stainless steels and alloys as well as
making improvements to existing products in order to
satisfy new and future market needs. Each year we in-
vest a significant amount of our turnover in RD. In the
past year alone we filed hundreds of patents, and our
total number of registered patents is in the thousands.
A HISTORY OF INNOVATION
Our strong track record of innovation dates back to the
1930s when we began experimenting with austenite
and ferrite alloys to create duplex stainless steel. In the
1970s our RD team developed a new group of aus-
tenitic-ferritic steels that were welcomed by industrial
companies in search of stronger, more cost-effective
and corrosion-resistant materials. In addition to our
Sanicro™ 25 grade, recent innovations have included
hyper-duplex stainless steel and pre-coated precision
strip steel for fuel cells, to name just a few.
2,700 RD
EXPERTS WANT
TO JOIN YOUR
BOILER TEAM
COLLABORATING WITH POWER COMPANIES
Our work with power engineering companies, power
utilities and other leading power companies is even
further proof of our determination to be a market leader
in this sector. In us you’ll have a knowledgeable advisor
and guide in the developing field of clean and efficient
coal-fired plants.
18. 18 Sanicro™ 25 – Advanced coal-fired power production
Prepare to
outperform
MAXIMUM ALLOWABLE STRESS
SANICRO™ 25 APPROVAL #210 FOR MANU-
FACTURING OF PRESSURE VESSELS IN CHINA
Sandvik has received Licence No. 210 for the industrial
production of Sandvik Sanicro™ 25 tube for steam boilers
from China’s Special Equipment Licensing Office (SELO).
Delivery specifications
Outside diameter range: 25 to 114.3 mm (0.984 to 4.5 in.)
Wall thickness range: 3 to 14 mm (0.118 to 0.551 in.)
Straight length: Up to 16 meters
Surface structure: Cold pilgered, annealed and pickled seamless
0
20
40
60
80
100
120
140
160
180
200
600 650 700 750
Temperature (C)
Stress(MPa)
TP347HFG
UNS S30432
TP310HCbN
Sanicro 25
TP310M0CbN
UNS N06674
Alloy 617
What are the big challenges you face in your coal-
fired power plant? Corrosion problems in the super-
heater or reheater? Selecting a high-performance
tube that meets even higher stress levels at higher
temperatures in your ultra-supercritical boilers?
Whatever your specific challenge may be, you can rest
assured that we’ve been helping to meet some of the
toughest requirements of energy producing industries
for over 50 years – tailoring each delivery to very
specific needs. Each project is unique. Each delivery
has its own set of specifications and requirements.
Below you can see how Sanicro™ 25 tube rates in
terms of maximum allowable stress, compared to
competing steel grades. You will also find our range of
deliverable formats as well as stress performance and
heat capacity / thermal conductivity levels. If you have
needs beyond those below, please don’t hesitate to
contact us for further discussions.
19. 19Sanicro™ 25 – Advanced coal-fired power production
This is Sandvik
Sandvik Group
The Sandvik Group is a global high tech-
nology enterprise with 49,000 employees
in 130 countries. Sandvik’s operations are
concentrated on five business areas in
which the group holds leading global po-
sitions in selected niches: Sandvik Mining,
Sandvik Machining Solutions, Sandvik Ma-
terials Technology, Sandvik Construction
and Sandvik Venture.
SANDVIK MATERIALS TECHNOLOGY
Sandvik Materials Technology is a
world-leading developer and manufacturer
of products in advanced stainless steels
and special alloys for the most demanding
environments, as well as products and
systems for industrial heating.
QUALITY MANAGEMENT
Sandvik Materials Technology has qual-
ity management systems approved by
internationally recognized organizations.
We hold, for example, the ASME Quality
System Certificates as a Material Organi-
zation, approvals to ISO 9001:2008, ISO
17025:2005 and PED 97/23/EC. We also
have product and/or shop approvals from
bodies such as TÜV, JIS, DNV and Lloyd’s
Register.
ENVIRONMENT, HEALTH AND SAFETY
Environmental awareness, health and
safety are integral parts of our business
and are at the forefront of all activities
within our operation. We hold ISO 14001
and OHSAS 18001 approvals. Sandvik,
Sanicro and Pressurfect are trademarks
owned by Sandvik Intellectual Property AB.