ASTM A387 Gade 11

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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 11 to the tension test requirements for Class 1 and/or Class 2.

Dimension Range

Grade
Grade
Grade 11
Product type
Plate
Thickness
(inmm)
0.185 - 3.604.70 - 91.4
Width
(inmm)
60 - 131.91500 - 3350
Length
(inmm)
73 - 5901900 - 15000

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

Mechanical Properties

Tensile testing is performed in the transverse direction.

Grade
Grade
Grade 11 Class 1
Thickness
(inmm)
0.185 - 3.604.70 - 91.4
Yield strength
(min ksi)
35
Tensile strength
(ksi)
60 - 85
Elongation in 2" 1)
(min %)
22
Elongation in 8" 1)
(min %)
19
Grade
Grade
Grade 11 Class 2
Thickness
(inmm)
0.185 - 3.604.70 - 91.4
Yield strength
(min ksi)
45
Tensile strength
(ksi)
75 - 100
Elongation in 2" 1)
(min %)
22
Elongation in 8" 1)
(min %)
18

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

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