ASME SA633 Grade D steel belongs to high strength low alloy steel plate and sheet. As a leading SA633 Grade D plate supplier in China, we can supply ASME SA633 Grade D low alloy steel plate with thickness up to 100mm[4inch]. The steel provides a minimum yield point of 50 ksi [345MPa] in thickness up to 2.5 inch [65mm] and inclusive and 46 ksi[315MPa] in thickness over 2.5inch [65mm] to 4inch [65 to 100mm], inclusive.
ASME SA633 Grade D steel chemical composition (%)
| Material | C max. | Mn | P max. | S max. | Si | Cu max. | Cr max. | Mo max. | Ni max. |
| SA633 Gr.D | 0.2 | 0.70-1.35 | 0.03 | 0.03 | 0.15-0.50 | 0.35 | 0.25 | 0.08 | 0.25 |
ASME SA633 Grade D steel tensile requirement
| Mechanical properties | Grade D |
| Tensile strength, kis [MPa] | - |
| thick ≤ 65mm | 70-90[485-620] |
| 65mm <thick ≤ 100mm | 65-85[450-590] |
| Yield strength, min, kis [MPa] | - |
| thick ≤ 65mm | 50[345] |
| 65mm <thick ≤ 100mm | 46[315] |
| Elongation in 8 in. [200 mm], min, % | 18 |
| Elongation in 2 in. [50 mm], min, % | 23 |
ASME SA633 Grade D low alloy steel is particularly suited for at low ambient temperature of -50℉[-45℃] and higher where notch toughness better than that expected in as-rolled material of a comparable strength level is desired.
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