A203 Gr.D steel plate belongs to ultra-low temperature container plate. A203 is a low-nickel alloy steel, including five grades A, B, D, E, and F. A203 Gr.D has good impact toughness and mechanical properties in a low temperature environment, and is usually used in a low temperature environment of -70～-101℃ (the tempered state can reach -107℃).
Below is the A203 Gr.D steel technical requirement.
A203 Gr.D mechanical properties
| Material |
Tensile strength |
Yield strength |
Elongation |
Standard |
| SA203GrD |
485-620MPa |
≥275 |
≥21% |
A20/A20M-2015 |
A203 Gr.D,E, F steel impact performance
| Grades |
State |
Thickness (mm) |
Impact test temperature（℃） |
| D |
Normalized |
≤50 |
-101 |
| 50-100 |
-87 |
| E |
Normalized |
≤50 |
-101 |
| 50-100 |
-87 |
| F |
Tempering |
≤50 |
-107 |
| 50-100 |
-107 |
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