ASTM A131 Gade AH/DH 32

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General Product Description

ASTM A131 Grades AH32, and DH32 are higher-strength structural steels with a minimum specified yield strength of 46 ksi and specified minimum Charpy V-notch impact toughness properties.

Applications

Typical applications include shipbuilding and mobile offshore drilling units and structures.

Available Dimensions

Grade
Grade
AH32
Product type
Plate
Thickness
(inmm)
0.251 - 1.506.38 - 38.1
Width
(inmm)
72 - 1201800 - 3050
Length
(inmm)
240 - 10206100 - 25910
Grade
Grade
DH32
Product type
Plate
Thickness
(inmm)
0.251 - 1.506.38 - 38.1
Width
(inmm)
72 - 1201800 - 3050
Length
(inmm)
240 - 10206100 - 25910

Width: Please inquire for available plate widths for thicknesses less than 0.250 in. For plate thicknesses of 0.250 in. or greater inquire for widths less than 72 in. or over 120 in.

Length: Please inquire for plate lengths greater than the listed maxima or less than the listed minima.

Mechanical Properties

Tensile testing is performed in the transverse direction.

Grade
Grade
Grade AH36
Thickness
(inmm)
0.251 - 1.506.38 - 38.1
Yield strength
(min ksi)
46
Tensile strength
(ksi)
64 - 85
Elongation in 2"
(min %)
22
Elongation in 8" 1)
(min %)
19
Grade
Grade
Grade DH32
Thickness
(inmm)
0.251 - 1.506.38 - 38.1
Yield strength
(min ksi)
46
Tensile strength
(ksi)
64 - 85
Elongation in 2"
(min %)
22
Elongation in 8" 1)
(min %)
19

1) For plates less than 5/16 in. in thickness , a deduction from the specified 8” elongation percentage shall be made in accordance with ASTM A6 Elongation Requirement Adjustments.

Impact Properties

Grade
Grade
AH32
Thickness
(inmm)
0.251 - 1.506.38 - 38.1
Test temperature
(°F)
32
Min Longitudinal Average Energy 1)
(ft-lbs)
23
Min transverse average energy 1)
(ft-lbs)
16
Grade
Grade
DH32
Thickness
(inmm)
0.251 - 1.506.38 - 38.1
Test temperature
(°F)
-4
Min Longitudinal Average Energy 1)
(ft-lbs)
23
Min transverse average energy 1)
(ft-lbs)
16

1) Specimen orientation at the option of the manufacturer unless otherwise specified in the order.

No more than one value below the specified minimum average energy, but no less than 70% of the specified minimum average energy value.

Minimum average energy for full-size specimens. Refer to ASTM A131 for sub-size specimen energy requirements.

Carbon Equivalent

(wt %)
Grade
Grade
Thickness (inmm)
AH32
0.251 - 1.506.38 - 38.1
DH32
0.251 - 1.506.38 - 38.1
Grade
Grade
CEV (max %)
AH32
0.36
DH32
0.36

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