ASTM A455

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General Product Description

The ASTM A455 specification is the Standard Specification for Pressure Vessel Plates, Carbon Steel, High-strength Manganese plates used in the application of welded pressure vessels. There is one chemistry composition defined while there are multiple strength levels available dependent on plate thickness.

Dimension Range

Grade
Grade
ASTM A455
Product type
Plate
Thickness
(in)
0.1875 - 0.750
Width
(in)
72 - 120
Length
(in)
240 - 1020

Width: Please inquire for plate widths less than 72 in. For thicknesses less than 0.25 in., maximum width is 96 in.

Length: Please inquire for plate lengths less than the listed minimum or greater than the listed maximum.

Mechanical Properties

Tensile testing is performed in the transverse direction.

Grade
Grade
ASTM A455
Thickness
(in)
0.187 - 0.375
Yield strength
(min ksi)
38
Tensile strength
(ksi)
75 - 95
Elongation in 2" 1)
(min %)
22
Elongation in 8" 1)
(min %)
15
Grade
Grade
ASTM A455
Thickness
(in)
0.376 - 0.580
Yield strength
(min ksi)
37
Tensile strength
(ksi)
73 - 93
Elongation in 2" 1)
(min %)
22
Elongation in 8" 1)
(min %)
15
Grade
Grade
ASTM A455
Thickness
(in)
0.581 - 0.750
Yield strength
(min ksi)
35
Tensile strength
(ksi)
70 - 90
Elongation in 2" 1)
(min %)
22
Elongation in 8" 1)
(min %)
15

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