ABS Grade AH40, DH40, EH40

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General Product Description

ABS Grades AH40, DH40, and EH40 are higher-strength structural steels with a minimum specified yield strength of 57 ksi and specified minimum Charpy Vnotch impact toughness properties.

Applications

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

Available Dimensions

Grade
Grade
Grade AH40
Product type
Plate
Thickness
(in)
0.1875 - 1.57
Width 1)
(in)
72 - 120
Length 1)
(in)
240 - 1020
Grade
Grade
Grade DH40
Product type
Plate
Thickness
(in)
0.1875 - 1.57
Width 1)
(in)
72 - 120
Length 1)
(in)
240 - 1020
Grade
Grade
Grade EH40
Product type
Plate
Thickness
(in)
0.1875 - 1.57
Width 1)
(in)
72 - 120
Length 1)
(in)
240 - 1020

1) Please inquire for plate dimensions outside the noted range.

Mechanical Properties

Tensile testing is performed in the transverse direction.

Grade
Grade
Grade AH40
Thickness
(in)
0.1875 - 1.57
Yield strength
(min ksi)
57
Tensile strength
(ksi)
74 - 94
Elongation A5 1)
(min %)
22
Grade
Grade
Grade AH40
Thickness
(in)
0.1875 - 1.57
Yield strength
(min ksi)
57
Tensile strength
(ksi)
74 - 94
Elongation A5 1)
(min %)
22
Grade
Grade
Grade EH40
Thickness
(in)
0.1875 - 1.57
Yield strength
(min ksi)
57
Tensile strength
(ksi)
74 - 94
Elongation A5 1)
(min %)
22

1) See ABS Rules for elongation requirements for alternative tensile specimens.

Impact Properties

Grade
Grade
Grade A40
Thickness
(in)
0.1875 - 1.57
Test temperature
(°F)
32
Min Longitudinal Average Energy 1)
(ft-lbs)
29
Min transverse average energy 1)
(ft-lbs)
19
Grade
Grade
Grade DH40
Thickness
(in)
0.1875 - 1.57
Test temperature
(°F)
-4
Min Longitudinal Average Energy 1)
(ft-lbs)
29
Min transverse average energy 1)
(ft-lbs)
19
Grade
Grade
Grade EH40
Thickness
(in)
0.1875 - 1.57
Test temperature
(°F)
-40
Min Longitudinal Average Energy 1)
(ft-lbs)
29
Min transverse average energy 1)
(ft-lbs)
19

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

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

Minimum average energy for full-size specimens. Refer to ABS Rules for sub-size specimen energy requirements.

Carbon Equivalent

Grade
Grade
Thickness (in)
Grade AH40
0.1875 - 1.57
Grade DH40
0.1875 - 1.57
Grade EH40
0.1875 - 1.57
Grade
Grade
CEV 1) (max %)
Grade AH40
0.40
Grade DH40
0.40
Grade EH40
0.40

1) Carbon equivalent requirements for TMCP condition of supply only.