A302 Grade D is an alloy steel plate specified by the ASTM A302 standard for use in pressure vessels and boilers, known for its Manganese-Molybdenum (Mn-Mo) and Manganese-Molybdenum-Nickel (Mn-Mo-Ni) composition, providing good strength for high-pressure applications. Its typical uses include the oil, gas, and chemical industries. A302GrD steel plate shall be normally supplied in the as-rolled condition. Plates may be ordered normalized or stress relieved, or both. If A302GrD above 50mm in thickness shall be normalized.
Supplementary Technology: HIC Test | NACE MR0175 | Z15 | Z25 | Z35 |
Thickness: 6MM to 300MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm
Chemical Composition of A302 Grade D steel plate
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A302 Grade D Chemical Composition |
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Carbon, max |
% |
Manganese, max |
% |
Silicon, max |
% |
Sulfur max |
% |
|
25mm or under |
0.2 |
Heat Analysis |
1.15-1.50 |
Heat Analysis |
0.15-0.40 |
All thick |
0.035 |
|
25-50mm |
0.23 |
Product Analysis |
1.07-1.62 |
Product Analysis |
0.13-0.45 |
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|
over 50mm |
0.25 |
|
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|
|
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|
|
Molybdenum max |
% |
Nickel max |
% |
Phosphorus |
% |
|
|
|
Heat Analysis |
0.45-0.60 |
Heat Analysis |
0.70-1.00 |
All thick |
0.035 |
|
|
|
Product Analysis |
0.41-0.64 |
Product Analysis |
0.67-1.03 |
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Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
Mechanical Property of A302 Grade D steel plate
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Mechanical Property of A302 Grade D steel plate |
A302 Grade D |
|
Tensile strength, kis [MPa] |
80-100 [550-690] |
|
Yield strength, min, kis [MPa] |
50 [345] |
|
Elongation in 8 in. [200 mm], min, % |
17 |
|
Elongation in 2 in. [50 mm], min, % |
20 |
