ABS Grade AH32, DH32, EH32 Z25
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ABS Grade AH32, DH32, EH32 Z25
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American Bureau of Shipping
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ABS Grade AH32, DH32, EH32 Z25
ABS Grade AH32, DH32, EH32 Z25
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General Product Description
ABS Grades AH32, DH32, and EH32 Z25 are "Z" quality, higher-strength structural steels with a minimum specified yield strength of 46 ksi and specified minimum Charpy V-notch impact toughness properties. The Z25 quality steel has a minimum specified average value for reduction of area in through- thickness tensile testing of 25%.
ApplicationsTypical applications include shipbuilding and mobile offshore drilling units and structural details for which greater resistance to lamellar tearing is desired.
Available Dimensions
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| Grade | Product type | Thickness (in) |
Width (in) |
Length (in) |
|---|---|---|---|---|
| Grade AH32Z25 | Plate | 0.1875 - 5.90 | 72 - 129.9 | 79 - 590 |
| Grade DH32Z25 | Plate | 0.1875 - 5.90 | 72 - 129.9 | 79 - 590 |
| Grade EH32Z25 | Plate | 0.1875 - 5.90 | 72 - 129.9 | 79 - 590 |
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Comparison
Grade
Grade AH32Z25
Product type
Plate
Thickness
(in)
(in)
0.1875 - 5.90
Width
(in)
(in)
72 - 129.9
Length
(in)
(in)
79 - 590
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Grade
Grade DH32Z25
Product type
Plate
Thickness
(in)
(in)
0.1875 - 5.90
Width
(in)
(in)
72 - 129.9
Length
(in)
(in)
79 - 590
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Grade
Grade EH32Z25
Product type
Plate
Thickness
(in)
(in)
0.1875 - 5.90
Width
(in)
(in)
72 - 129.9
Length
(in)
(in)
79 - 590
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Thickness: Inquire for plate thickness less than 0.75 in.
Mechanical Properties
Tensile testing is performed in the transverse direction. When "Z" quality steel is specified, through-thickness tension testing is performed in accordance with ABS Rules.
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| Grade | Thickness (in) |
Yield strength (min ksi) |
Tensile strength (ksi) |
Elongation A5 1) (min %) |
Reduction of area, average (min %) |
Reduction of area (min %) |
|---|---|---|---|---|---|---|
| Grade AH32Z25 | 0.1875 - 5.90 | 46 | 64 - 85 | 22 | 25 | 15 |
| Grade DH32Z25 | 0.1875 - 5.90 | 46 | 64 - 85 | 22 | 25 | 15 |
| Grade EH32Z25 | 0.1875 - 5.90 | 46 | 64 - 85 | 22 | 25 | 15 |
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Comparison
Grade
Grade AH32Z25
Thickness
(in)
(in)
0.1875 - 5.90
Yield strength
(min ksi)
(min ksi)
46
Tensile strength
(ksi)
(ksi)
64 - 85
Elongation A5 1)
(min %)
(min %)
22
Reduction of area, average
(min %)
(min %)
25
Reduction of area
(min %)
(min %)
15
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Grade
Grade DH32Z25
Thickness
(in)
(in)
0.1875 - 5.90
Yield strength
(min ksi)
(min ksi)
46
Tensile strength
(ksi)
(ksi)
64 - 85
Elongation A5 1)
(min %)
(min %)
22
Reduction of area, average
(min %)
(min %)
25
Reduction of area
(min %)
(min %)
15
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Grade
Grade EH32Z25
Thickness
(in)
(in)
0.1875 - 5.90
Yield strength
(min ksi)
(min ksi)
46
Tensile strength
(ksi)
(ksi)
64 - 85
Elongation A5 1)
(min %)
(min %)
22
Reduction of area, average
(min %)
(min %)
25
Reduction of area
(min %)
(min %)
15
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1) See ABS Rules for elongation requirements for alternative tensile specimens.
Impact Properties
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| Grade | Thickness (in) |
Test temperature(°F) | Min Longitudinal Average Energy 1)(ft-lbs) | Min transverse average energy 1)(ft-lbs) |
|---|---|---|---|---|
| AH32Z25 | 0.1875 - 2.00 | 32 | 23 | 16 |
| AH32Z25 | 2.01 - 2.80 | 32 | 28 | 19 |
| AH32Z25 | 2.81 - 4.00 | 32 | 34 | 23 |
| AH32Z25 | 4.01 - 5.90 | 32 | 34 | 23 |
| DH32Z25 | 0.1875 - 2.00 | -4 | 23 | 16 |
| DH32Z25 | 2.01 - 2.80 | -4 | 28 | 19 |
| DH32Z25 | 2.81 - 4.00 | -4 | 34 | 23 |
| DH32Z25 | 4.01 - 5.90 | -4 | 34 | 23 |
| EH32Z25 | 0.1875 - 2.00 | -40 | 23 | 16 |
| EH32Z25 | 2.01 - 2.80 | -40 | 28 | 19 |
| EH32Z25 | 2.81 - 4.00 | -40 | 34 | 23 |
| EH32Z25 | 4.01 - 5.90 | -40 | 34 | 23 |
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Comparison
Grade
AH32Z25
Thickness
(in)
(in)
0.1875 - 2.00
Test temperature(°F)
32
Min Longitudinal Average Energy 1)(ft-lbs)
23
Min transverse average energy 1)(ft-lbs)
16
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Grade
AH32Z25
Thickness
(in)
(in)
2.01 - 2.80
Test temperature(°F)
32
Min Longitudinal Average Energy 1)(ft-lbs)
28
Min transverse average energy 1)(ft-lbs)
19
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Grade
AH32Z25
Thickness
(in)
(in)
2.81 - 4.00
Test temperature(°F)
32
Min Longitudinal Average Energy 1)(ft-lbs)
34
Min transverse average energy 1)(ft-lbs)
23
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Grade
AH32Z25
Thickness
(in)
(in)
4.01 - 5.90
Test temperature(°F)
32
Min Longitudinal Average Energy 1)(ft-lbs)
34
Min transverse average energy 1)(ft-lbs)
23
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Grade
DH32Z25
Thickness
(in)
(in)
0.1875 - 2.00
Test temperature(°F)
-4
Min Longitudinal Average Energy 1)(ft-lbs)
23
Min transverse average energy 1)(ft-lbs)
16
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Grade
DH32Z25
Thickness
(in)
(in)
2.01 - 2.80
Test temperature(°F)
-4
Min Longitudinal Average Energy 1)(ft-lbs)
28
Min transverse average energy 1)(ft-lbs)
19
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Grade
DH32Z25
Thickness
(in)
(in)
2.81 - 4.00
Test temperature(°F)
-4
Min Longitudinal Average Energy 1)(ft-lbs)
34
Min transverse average energy 1)(ft-lbs)
23
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Grade
DH32Z25
Thickness
(in)
(in)
4.01 - 5.90
Test temperature(°F)
-4
Min Longitudinal Average Energy 1)(ft-lbs)
34
Min transverse average energy 1)(ft-lbs)
23
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Grade
EH32Z25
Thickness
(in)
(in)
0.1875 - 2.00
Test temperature(°F)
-40
Min Longitudinal Average Energy 1)(ft-lbs)
23
Min transverse average energy 1)(ft-lbs)
16
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Grade
EH32Z25
Thickness
(in)
(in)
2.01 - 2.80
Test temperature(°F)
-40
Min Longitudinal Average Energy 1)(ft-lbs)
28
Min transverse average energy 1)(ft-lbs)
19
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Grade
EH32Z25
Thickness
(in)
(in)
2.81 - 4.00
Test temperature(°F)
-40
Min Longitudinal Average Energy 1)(ft-lbs)
34
Min transverse average energy 1)(ft-lbs)
23
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Grade
EH32Z25
Thickness
(in)
(in)
4.01 - 5.90
Test temperature(°F)
-40
Min Longitudinal Average Energy 1)(ft-lbs)
34
Min transverse average energy 1)(ft-lbs)
23
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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
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| Grade | AH32 | DH32 | EH32 |
|---|---|---|---|
| Thickness (in) | 0.1875 - 1.57 | 0.1875 - 1.57 | 0.1875 - 1.57 |
| CEV 1) (max %) | 0.36 | 0.36 | 0.36 |
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Comparison
Grade
Thickness (in)
AH32
0.1875 - 1.57
DH32
0.1875 - 1.57
EH32
0.1875 - 1.57
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Grade
CEV 1) (max %)
AH32
0.36
DH32
0.36
EH32
0.36
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1) Carbon equivalent requirements for TMCP condition of supply only.
