Steel plates are often used to make a variety of products through cutting and welding processes. Common applications include ships, bridges, buildings, pressure vessels, machinery, and military equipment. The document discusses the manufacturing process for steel plates including rolling, accelerated cooling, hot leveling, and ultrasonic testing to ensure quality. It then provides an overview of various international specifications for steel plates, outlining grades and their intended uses.

2.  Steel plates is a material often used to make
products.
 Steel Plate is cut and welded together to
achieve the final product.
 Mainly used for building ships, bridges,
structure for buildings, pressure vessels,
industrial machinery and military equipments,
nuclear reactors, penstock, etc.

3. An overview of a general manufacturing process :

4.  Bridges
 Ships
 Buildings
 Offshore Structures
 Power Stations
 Storage Tanks
 Machinery
 Boiler and pressure vessels
 Floor for decks, stairs, bus, etc.

5. Rolling:
 Minimize internal flaw of the plate.
 Automatic dimension control.
 Reduces thickness deviation.
Accelerated Cooling:
 Process of rolling and accelerated cooling.
 To produce high tensile steel without any heat treatment.
Hot leveling:
 Residual stress is removed.
 to provide better flatness of plates
Ultrasonic Testing:
 Checks for flaws, such as blow holes, cracks,etc.
 Done to ensure quality.

6. POSCO Specifications
POSTEN High strength steel for welded structure
PILAC-BT33/36/45 TMCP(Thermo-Mechanically Controlled process)
High strength steel for buildings
POSMOLD Mold Steel
POS AR320/360/400 Abrasion Resistant Steel
API Specifications
API-2H Steel Plates for offshore structure
API-2W Steel Plates for offshore structure
API-5L Steel pipe for pipeline transportation system

7. ASTM Specifications
A36 Carbon Structure Steel
A131 Structural Steel for Ships/High Strength Structural Steel
A242 HSLA structural Steel
A283 Low and Intermediate Tensile Strength carbon Steel Plates
A285/A285 M Low and Intermediate Tensile Strength carbon Steel Plates for pressure vessels
A514 High yield strength, quenched and tempered low alloy steel plate for welded structure.
A515/A515 M Pressure vessel plates, carbon steel, for intermediate and higher temperature service
A516/A516 M Pressure vessel plates, carbon steel, for moderate and lower temperature service
A537 Pressure vessel plates, heat treated, C-Mn-Si steel
A573 Structure Carbon Steel with improved toughness
A588 High Strength High Alloy Structural Steel with atmospheric corrosion resistance
A633 Normalized HSLA Structural Steel Plate
A709 Structural Steel for bridges

8. EN specifications
EN 10025 Structural steel
EN 10028 Steel for pressure vessels
EN 10225 Steel for use of ocean structure
JIS specifications
G 3101 Steel for general Structure use
G 3103 Carbon Steel and Molybdenum Alloy Steel plate for boiler
and other pressure vessels.
G 3106 Steel for welded structure
G 3114 Temperature resistant steel plate for welded structure
G 3115 Steel plate for pressure vessel for intermediate temperature
service
G 3126 Carbon Steel Sheet for Pressure Vessels for Low
Temperature Service
G 3136 Rolled Steel Sheet for building Structure
G 4051 Carbon steel for machine structure use

10. A36
 Most widely used.
 Tensile Strength: 400 to 550 Mpa
 Yield Strength: 249 Mpa
 Elongation: 18% min in 8” 21% min in 2” (for plates wider than 24”)

11. A572
 HSLA steel plate
 produced in Grades 42, 50, 60 & 65—the grades representing the yield
strength.
 Tensile: 60 - 70 ksi min
 Yield: 42-60 ksi min
 Elongation: 16-18% min in 8” 15-22% min in 2” (for plates wider
than 24”)

12. A588 / A606 / A242
 HSLA steel plate
 Better weathering ability than A572.

13. A656
 HSLA steel plate
 Lighter weight and improved formability
 Available in grades- 50, 60, 70 and 80.

14. AR360/AR400
 quenched & tempered
 Minimum brinell of 360.

15. T-1 321 / T-1 360
 Quenched and tempered.
 minimum brinell of 321 and 360 respectively.

16. AR500
 Quenched and tempered.
 minimum brinell of 450.

17. A514
 Quenched and tempered.
 used in structural applications where high strength and low weight are
critical
 B, H, F and Q grades available.

18. ABS A / ABS B
 exclusively used in the Shipbuilding Industry
 These grades are certified by ABS – American Bureau of Shipping.
 Available in two grades-A and B.

19. ABS AH36 / DH36 / EH36
 exclusively used in the Shipbuilding Industry
 These grades are certified by ABS – American Bureau of Shipping.
 Higher strength as compared to ABS A and B.

21. API 2H Grade 50
 use in production for offshore fixed and floating production platforms.
 used where strength and material integrity is required in several
dimensions.
 certified by American Petroleum Institute.
 Tensile Strength: 70 to 90 ksi.
 Yield Strength: 50 ksi min

22. A633
 normalized high-strength low-alloy structural steel plate.
 suited for service at low ambient temperatures of –50°F or higher where
notch toughness better than expected is desired.

23. SA516
 exclusively used in pressure vessel industry.
 Available in grades 55, 60, 65 & 70.

24. SA537
 normalized Pressure Vessel Quality grade of steel plate.
 Better strength.
 Used in low temperature conditions

25. MIL-A 46100
 high-hardness armor plate.
 Approved by Department of Army
 Surface hardness of this material is between 477 and 534 brinell.
MIL-A 12560
 approved by the Material Technology Laboratory, Department of the Army.
 use in combat-vehicles.
 Thickness ranges from 1⁄4” through 6” according to use.

26. * As per nippon steel specifications