A533 Grade D is a type of low-alloy steel plate specified by ASTM/ASME for high-temperature, high-pressure applications like boilers and pressure vessels, containing Manganese-Molybdenum (Mn-Mo) or Mn-Mo-Ni, known for good weldability and toughness, especially in nuclear reactor components, coming in Classes (1, 2, 3) with increasing strength levels (e.g., Class 3 has higher strength than Class 1).
Chemical Composition
The chemical composition of AISI A533 grade D alloy steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | ~ 97.5 |
| Manganese, Mn | 1.15-1.50 |
| Molybdenum, Mo | 0.45-0.60 |
| Carbon, C | 0.25 |
| Nickel, Ni | 0.20-0.40 |
| Silicon, Si | 0.15-0.30 |
| Sulfur, S | 0.04 |
| Phosphorus, P | 0.035 |
Physical Properties
The following table shows the physical properties of AISI A533 grade D–PVQ alloy steel.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.7-8.03 g/cm3 | 0.278-0.290 lb/in3 |
Mechanical Properties
The mechanical properties of AISI A533 grade D–PVQ alloy steel are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
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