ASTM A 387 GRADE 11, 12,22,5,9, CLASS-2

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, 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.Physical Properties
ASTM A387 grade steel plates are intended for welded boilers and pressure vessels designed for elevated temperature environments.

Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum to ASTM A 387 Standard
ASTM A387 Chemical Properties (Cast Analysis)
  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
ASTM A387 Mechanical Properties
    Tensile Strength
(ksi)
Tensile Strength (MPa) Yield Strength (ksi) Yield Strength (MPa) Elongation in 2 inches (%)
A 387 Grade 5 Class 1 60-85 415-585 30 205 18
Class2 75-100 515-690 45 310 18
A 387 Grade 9 Class 1
60-85 415-585 30 205 18
Class2 75-100 515-690 45 310 18
A 387 Grade 11 Class 1
60-85 415-585 35 240 22
Class2 70-90 485-620 45 310 22
A 387 Grade 12 Class 1
50-80 380-550 33 230 22
Class2 65-85 450-585 40 275 22
A 387 Grade 22 Class 1
60-85 415-585 30 205 18
Class2 75-100 515-690 45 310 18
 
We can supply:
Thickness from 5.0 mm to 100mm

Width: from 1250mm to 2500mm

Length: from 6,000mm to 20,000mm


To place your order for ASTM-A 387, kindly contact us at csa@csteel.in
 

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