1. UGIMA®
4404 HM
Chemical
analysis(%)
C Si Mn Ni Cr Cu Mo P S
≤0.03  1  2 10 - 12 16.5 – 17.5  0.750 2 – 2.5  0.04 0.020 – 0.030
25-09-2012 – REV06
While Ugitech has made every effort to print accurate and reliable information, it does not guarantee or warrant that the information herein is complete, accurate or reproducible as such within its customer’s works.
Ugitech assumes no liability for the use or application of any posted data printed herein. Please contact Ugitech Technical help desk for assistance.
General
presentation
UGIMA
®
4404 HM is an exclusive stainless steel with improved machinability from Ugitech.
It has properties that are identical in all respects to 4404, apart from the fact that it has exceptional
machinability.
UGIMA
®
4404 HM is a stainless steel resulting from the new production and control process in the inclusive
UGIMA
®
2 population developed by Ugitech.
UGIMA
®
4404 HM represents a new technological advance which brings advantages, whatever the
machining conditions, the machine or tools used.
Compared to the standard 4404 grade, productivity increases of 40% have been achieved in high-speed
steel drilling and 15% in cutting to length. Relative to our UGIMA
®
4404 the average increases amount to
20%.
Classification Stainless Austenitic Molybdenum Steel with Improved Machinability
Désignation Material N°
Europe USA Japan ISO
EN UNS JIS
1.4401
X5CrNiMo17-12-2
S31600 SUS316 4401-316-00-I
X5CrNiMo17-12-2
1.4404
X2CrNiMo17-12-2
S31603 SUS316L 4404-316-03-I
X2CrNiMo17-12-2
Autre designation matière
USA France Germany U.K. Sweden
AISI AFNOR DIN BS S.S
316 Z7CND 17-11-02 1.4401 316S31 2347
316L Z3CND 17-11-02 1.4404 316S11 2348
Mechanical
Properties Tensile data
(limit values for information only)
Yield strength Tensile strength Elongation Reduction of Area
Rp0,2 Rm A Z
(Mpa) (Mpa) (%) (%)
Not cold drawn ≥ 220 500 - 600 ≥ 45 ≥ 70
Cold drawn* 320 – 660 560 - 800 ≥ 32 ≥ 60
* Approximate ranges allowing for the different cold drawing rates it is possible to apply (cold drawing
rate  = hardness and strength )
Physical
Properties
Temperature
Mass
Density
Elastic
modulus
Thermal
conductivity
Electrical
resistivity
Expansion
coefficient
(°C) (kg/dm3
) (N/mm2
) (W/m.°C) (µΩ.mm) (°C-1
)
20 7,900 196 000 15 750
20 - 200 16,5 x 10-6
Weight of the round bars (kg/m) 0,0062 x D² (D=  of the bar)
Weight of the hexagonal bars (kg/m) 0,0068 x H² (H=nominal size of the hexagon)
Weight of the square bars (kg/m) 0,0079 x C² (C=nominal size of the square)
(for information only)

2. UGIMA®
4404HM
Chemical
analysis(%)
C Si Mn Ni Cr Cu Mo P S
≤0.03  1  2 10 - 12 16.5 – 17.5  0.750 2 – 2.5  0.04 0.020 – 0.030
25-09-2012 – REV06
Avenue Paul Girod
73403 UGINE Cedex - France
www.ugitech.com
2
While Ugitech has made every effort to print accurate and reliable information, it does not guarantee or warrant that the information herein is complete, accurate or reproducible as such within its
customer’s works. Ugitech assumes no liability for the use or application of any posted data printed herein. Please contact Ugitech Technical help desk for assistance.
Magnetic and
electrical
properties
Austenitic grade, hence almost non-magnetic after solution annealing heat treatment.
Mild ferromagnetic behaviour may be observed after cold working of the metal by cold drawing (destabilisation
of the austenite)
Corrosion
resistance Atmosphere Behaviour
Nitric acid Good
Phosphoric acid Moderate
Sulphuric acid Moderate
Acetic acid Good
Sodium Moderate
NaCl (Saline mist) Good
Humidity Excellent
Petrol Moderate
Seawater Moderate
UGIMA
®
4404 HM provides excellent corrosion resistance in natural atmospheres : watercourses, rural and
urban atmospheres, industrial atmospheres, even in the presence of moderate concentrations of chlorides
and acids, in food and farm-produce environments and in numerous acid (sulphuric, phosphoric, organic) and
chlorinated atmospheres, under certain temperature and concentration conditions.
UGIMA
®
4404 HM effectively resists intergranular corrosion, even after welding, and passes the standardised
tests:
 AFNOR NFA05-159,
 ASTM A262 – 75 PRACTICE E,
 DIN 50914,
And, on request, special tests.
The use of UGIMA
®
4404 HM is compatible with all fluids, lubricants, oils and greases applied in industry and
machining.
UGIMA
®
4404 HM can be used in marine environments and in highly oxidising chemical atmospheres.
Optimum corrosion resistance is achieved on a surface free from traces of machining oils or foreign particles
(of iron, for example).
The pickling of UGIMA
®
4404 HM is comparable to that of a 1.4404 (316L) steel.
The decontamination of steels with a high sulphur content is not recommended because of the complexity of
this operation and cost price; however, if it is necessary to carry this out, the recommended decontamination /
passivation treatment is as follows:
 nitric acid 52% (36° Bé) 1 volume
 water 1 volume
 at ambient temperature
 short duration
 finish with thorough washing
The corrosion resistance of a stainless steel depends on a number of factors, both in terms of the composition
of the aggressive atmosphere (chloride concentration, presence or absence of oxidants, temperature, pH,
whether or not there is agitation, etc.) and in terms of the material (surfaces free from ferrous particles,
surface condition such as cold drawing, polishing, etc.). Experimental precautions must also be taken for
certain tests, e.g. for saline mist (French standard NFX 41002): for example, the use of marking labels placed
on the sample must be avoided as these could cause corrosion lures de corrosion run-outs and minimise the
duration of resistance to the test.

3. UGIMA®
4404HM
Chemical
analysis(%)
C Si Mn Ni Cr Cu Mo P S
≤0.03  1  2 10 - 12 16.5 – 17.5  0.750 2 – 2.5  0.04 0.020 – 0.030
25-09-2012 – REV06
Avenue Paul Girod
73403 UGINE Cedex - France
www.ugitech.com
3
While Ugitech has made every effort to print accurate and reliable information, it does not guarantee or warrant that the information herein is complete, accurate or reproducible as such within its
customer’s works. Ugitech assumes no liability for the use or application of any posted data printed herein. Please contact Ugitech Technical help desk for assistance.
Hot
transformation
Forging
The forging of UGIMA 4404 HM does not pose any particular problems.
Heating without special precautions up to 1150°-1180°C.
Forging between 1180°C and 950°C (the best results being obtained between 1100 and 1180°C).
Cooling in air or water, if no deformation is feared (priority will be given to cooling in WATER for high charges
– avoid cooling stacked forgings in air).
Heat treatment The heat treatment of UGIMA
®
4404 HM consists in quenching the metal in water or air after keeping it for a
long time at a high temperature of between 1000 and 1100°C. This solution annealing heat treatment
enables all traces of cold drawing to be removed whilst providing the steel with its lowest level of Mechanical
Properties (Rm between 500 and 650 MPa).
Machinability Thanks to specific optimization of the entire population, in terms of the machinability of the grade, UGIMA
®
4404HM guarantees exceptional performances. Such performances are provided both in very high or severe
cutting conditions, thanks to the UGIMA
®
2 process, but also under low or mild cutting conditions, thanks to
the new improvements made during development. Therefore UGIMA
®
4404HM is particularly suited to
cutting from the bar, its improved machinability being effective for a wide range of cutting conditions and
machining operations. Its performance is based on very good fractionation of the chip, increased service
lives and very good surface conditions after machining.
If you want to derive maximum benefit from the potential of this grade, in terms of your parts and your
working environment, contact our Technical Consultation Department.
Welding UGIMA
®
4404 HM can be welded without undue difficulty, with or without filling metal.
If a filling metal is required, use grades E316L (coated electrodes), ER316L (TIG), ER316LSi (MIG).
To avoid any risks of hot cracking welding energies should be limited in their application.
No heat treatment is required after welding.
Products
available
Descalled rolled bars (tol. 12 and 13)
Bars cold worked by drawing, turning, straightening (tol. 6 to 11)
Cold worked hexagonal bars (tol. 11)
*For other requirements consult us
Applications  Mechanical Engineering Industry
 Chemical Industry
 Petrol, Petrochemical Industries
 Food and Farm-Produce Industry
 Medicine, Pharmaceutical Industry
 Interior decorating and domestic appliances
 Building