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.
An overview of a general manufacturing process :
Bridges Ships Buildings Offshore Structures Power Stations Storage Tanks Machinery Boiler and pressure vessels Floor for decks, stairs, bus, etc.
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 platesUltrasonic Testing: Checks for flaws, such as blow holes, cracks,etc. Done to ensure quality.
POSCO SpecificationsPOSTEN High strength steel for welded structurePILAC-BT33/36/45 TMCP(Thermo-Mechanically Controlled process) High strength steel for buildingsPOSMOLD Mold SteelPOS AR320/360/400 Abrasion Resistant SteelAPI Specifications API-2H Steel Plates for offshore structure API-2W Steel Plates for offshore structure API-5L Steel pipe for pipeline transportation system
ASTM SpecificationsA36 Carbon Structure SteelA131 Structural Steel for Ships/High Strength Structural SteelA242 HSLA structural SteelA283 Low and Intermediate Tensile Strength carbon Steel PlatesA285/A285 M Low and Intermediate Tensile Strength carbon Steel Plates for pressure vesselsA514 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 serviceA516/A516 M Pressure vessel plates, carbon steel, for moderate and lower temperature serviceA537 Pressure vessel plates, heat treated, C-Mn-Si steelA573 Structure Carbon Steel with improved toughnessA588 High Strength High Alloy Structural Steel with atmospheric corrosion resistanceA633 Normalized HSLA Structural Steel PlateA709 Structural Steel for bridges
EN specificationsEN 10025 Structural steelEN 10028 Steel for pressure vesselsEN 10225 Steel for use of ocean structureJIS 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
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”)
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”)
A656 HSLA steel plate Lighter weight and improved formability Available in grades- 50, 60, 70 and 80.
AR360/AR400 quenched & tempered Minimum brinell of 360.
T-1 321 / T-1 360 Quenched and tempered. minimum brinell of 321 and 360 respectively.
AR500 Quenched and tempered. minimum brinell of 450.
A514 Quenched and tempered. used in structural applications where high strength and low weight are critical B, H, F and Q grades available.
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.
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.
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
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.
SA516 exclusively used in pressure vessel industry. Available in grades 55, 60, 65 & 70.
SA537 normalized Pressure Vessel Quality grade of steel plate. Better strength. Used in low temperature conditions
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.