API 2H Grade 42
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General Product Description
API 2H Grade 42 is an intermediate-strength, normalized, structural steel plate used in the welded construction of offshore structures. API 2H Grade 42 has a minimum yield strength of 42 ksi [289 MPa] and a minimum transverse Charpy V-notch impact toughness of 25 ft-lb [34 J] at -40°F [-40°C].
Applications
API 2H Grade 42 is intended primarily for use in offshore structures in critical portions that must exhibit good impact toughness and resistance to plastic fatigue loading and lamellar tearing. The primary use of API 2H Grade 42 is in tubular joints, stiffened plate construction and other intersections where portions of the plates will be subjected to tension in the through-thickness (Z) direction.
Dimension Range
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| Grade | Product type | Thickness (in) |
Width (in) |
Length (in) |
|---|---|---|---|---|
| Grade 42 | Plate | 0.590 - 2.00 | 75 - 129.9 | 154 - 590 |
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Comparison
Grade
Grade 42
Product type
Plate
Thickness
(in)
(in)
0.590 - 2.00
Width
(in)
(in)
75 - 129.9
Length
(in)
(in)
154 - 590
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Mechanical Properties
Tensile testing is performed in the transverse direction.
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| Product type | Grade | Thickness (in) |
Yield strength (min ksi) |
Tensile strength (ksi) |
Elongation in 2" (min %) |
Elongation in 8" (min %) |
|---|---|---|---|---|---|---|
| Plate | Grade 42 | 0.590 - 2.00 | 42 | 62 - 82 | 22 | 18 |
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Comparison
Product type
Plate
Grade
Grade 42
Thickness
(in)
(in)
0.590 - 2.00
Yield strength
(min ksi)
(min ksi)
42
Tensile strength
(ksi)
(ksi)
62 - 82
Elongation in 2"
(min %)
(min %)
22
Elongation in 8"
(min %)
(min %)
18
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Impact Properties
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| Grade | Specimen Size (in) | Min transverse average energy (ft-lbs) | Min single value (ft-lbs) | Test temperature(°F) |
|---|---|---|---|---|
| Grade 42 | 0.394 x 0.394 | 25 | 20 | -40 |
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Comparison
Grade
Grade 42
Specimen Size (in)
0.394 x 0.394
Min transverse average energy (ft-lbs)
25
Min single value (ft-lbs)
20
Test temperature(°F)
-40
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Carbon Equivalent
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| Grade | Grade 42 |
|---|---|
| Thickness (in) | 0.590 - 2.00 |
| CEV (max %) | 0.43 |
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Comparison
Grade
Thickness (in)
Grade 42
0.590 - 2.00
Grade
CEV (max %)
Grade 42
0.43
