Specialist in Manufacturing Industrial Steel Fasteners

Cr Mo Alloy Steel Plates

An ISO 9001:2008 Certified Company, Vision Alloys is a full line distributor, processor and supplier of alloy steel plates in one of the most popular pressure vessel grade ASME SA387 or ASTM A387. We can supply cut to size Chrome Moly steel plates, with both narrow and wide widths. Our stock of alloy steel plates includes thickness of 3mm up to 100mm with width of 1500mm, 2000mm, and 2500mm.

An ISO 9001:2008 Certified Company, Vision Alloys is an international distributor and supplier of Cr Mo Alloy Steel Plates (ASTM A 387 Grade 11/22 Class 2). Vision Alloys stocks an extensive range of high quality alloy steel plates for manufacturing pressure vessels and industrial boilers for the petroleum, petrochemical and chemical processing industries. Two of the most popular pressure vessel steel grades include ASME SA 516 (ASTM A516) carbon steel and ASME SA 387 (ASTM A387) alloy steel. Thicknesses available in range from 3 mm up to as thick as 100 mm, although thicker plates might be manufactured under special order.

ASTM A387 / A387M – Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
This specification covers chromium-molybdenum alloy steel plates for welded boilers and pressure vessels designed for elevated temperature service. Materials considered under this specification are available in grades 2, 12, 11, 22, 22L, 21, 21L, 5, 9 and 91. The steel materials shall be killed and shall be thermally treated. The steel specimens shall undergo heat analysis and product analysis and shall conform to the chemical requirements for carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, nickel, vanadium, columbium, boron, nitrogen, aluminum, titanium, and zirconium. The steel specimens shall also undergo tension tests and shall conform to the required values of tensile strength, yield strength, and elongation.

Cr Mo Steel Plates, Alloy Steel Plates ASTM A387 Chemical Composition :

C Mn P S SI Cr Mo
Grade 5 0.15 max 0.3 – 0.6 0.035 0.03 0.5 max 4.00 – 6.00 0.45 – 0.65
Grade 9 0.15 max 0.30 – 0.6 0.03 0.03 1.0 max 8.0 – 10.0 0.9 – 1.1
Grade 11 0.05 – 0.17 0.4 – 0.65 0.035 0.035 0.5 – 0.80 1.0 – 1.5 0.45 – 0.65
Grade 12 0.05 – 0.17 0.4 – 0.65 0.035 0.035 0.15 – 0.4 0.8 – 1.15 0.45 – 0.6
Grade 22 0.05 – 0.15 0.3 – 0.6 0.035 0.035 0.5 max 2.0 – 2.5 0.9 – 1.1

Cr Mo Steel Plates, Alloy Steel Plates ASTM A387 Mechanical Properties :

C Mn P S SI Cr Mo
Grade 5 0.15 max 0.3 – 0.6 0.035 0.03 0.5 max 4.00 – 6.00 0.45 – 0.65
Grade 9 0.15 max 0.30 – 0.6 0.03 0.03 1.0 max 8.0 – 10.0 0.9 – 1.1
Grade 11 0.05 – 0.17 0.4 – 0.65 0.035 0.035 0.5 – 0.80 1.0 – 1.5 0.45 – 0.65
Grade 12 0.05 – 0.17 0.4 – 0.65 0.035 0.035 0.15 – 0.4 0.8 – 1.15 0.45 – 0.6
Grade 22 0.05 – 0.15 0.3 – 0.6 0.035 0.035 0.5 max 2.0 – 2.5 0.9 – 1.1

Comparable Alloy Steel Plate Specifications, Pipe Specifications and Forging Specifications :

Plate Grade Forging/Flange Grade A182 Pipes Grade ASTM A335
BSEN10028-2 16M03 F1 P1
ASTM A387-12-2 F12-2 P12
ASTM A387-11-2 F11-2 P11
ASTM A387-22-2 F22 P22
ASTM A387-5-2 F5 P5
ASTM A387-91-2 F9 P91


Vision Alloys exports Alloy Steel Sheets & Plates to countries like Saudi Arabia, United Arab Emirates, Singapore, Malaysia, Germany, Iran, United Kingdom, Italy, Israel, Russia, United States Of America, South Africa, Kenya, Nigeria, Phillipines.

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