ASTM A387 Grade 22

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General Product Description

The ASTM A387 specification is the Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum intended primarily for use in welded boilers and pressure vessels designed for elevated temperature service. SSAB can supply A387 Grade 22 to the tension test requirements for Class 1 and/or Class 2.

Dimension Range

Grade
Grade
Grade 22
Product type
Plate
Thickness
(in)
0.185 - 3.60
Width
(in)
60 - 131.9
Length
(in)
73 - 590

Width: Inquire for widths and lengths outside the noted ranges. 

Mechanical Properties

Tensile testing is performed in the transverse direction.

Grade
Grade
Grade 22 Class 1
Thickness
(in)
0.185 - 3.60
Yield strength
(min ksi)
30
Tensile strength
(ksi)
60 - 85
Elongation in 2" 1)
(min %)
18
Reduction of area 2)
(min %)
40
Grade
Grade
Grade 22 Class 2
Thickness
(in)
0.185 - 3.60
Yield strength
(min ksi)
45
Tensile strength
(ksi)
75 - 100
Elongation in 2" 1)
(min %)
18
Reduction of area 2)
(min %)
40

1) Refer to ASTM A20/A20M for Elongation adjustments based on plate thickness.

2) Measured on a flat specimen.