ASTM A533/A533M A533 Grade C Class 2 Introduce
ASTM A533/A533M A533 Grade C Class 2 is a kind of nuclear pressure vessel steel.In order to meet different needs of designers, alloy components concentration and other rules of ASTM A533/A533M are not exactly the same.
Smelting temperature:1572°C - 1784°C
Application:Pressure vessel plates, alloy steel, quenched and tempered, manganese, molybdenum and manganese molybdenum nickel
ASTM A533/A533M A533 Grade C Class 2 Material Chemical Composition
The chemical composition of the ASTM A533/A533M A533 Grade C Class 2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Molybdenum (Mo) | 0.4500 | 0.6000 |
| Nickel (Ni) | 0.7000 | 1.0000 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0350 |
| Manganese (Mn) | 1.1500 | 1.5000 |
| Silicon (Si) | 0.1500 | 0.4000 |
| Carbon (C) | - | 0.2500 |
| Silicon (Si) | 0.1300 | 0.4500 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 0.6700 | 1.0300 |
| Molybdenum (Mo) | 0.4100 | 0.6400 |
| Manganese (Mn) | 1.0700 | 1.5000 |
ASTM A533/A533M A533 Grade C Class 2 Material Mechanical Properties
The physical and mechanical properties of steel are important for its performance in various applications. The ASTM A533/A533M standard states the required properties for both Grade A and Grade B steel, such as the tensile strength, yield strength, hardness, elongation, malleability, toughness, weldability, and corrosion resistance.
The mechanical properties of the ASTM A533/A533M A533 Grade C Class 2 steel are as follows:
| YieldRp0.2 | ≤ 665 (MPa) |
| TeileRm | ≤ 454 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 222 |
ASTM A533/A533M A533 Grade C Class 2 Material Thermal Properties
The thermal performance parameters of the ASTM A533/A533M A533 Grade C Class 2 steel are as follows:
| Temperature (°C) | 31 | 785 | 888 |
| Modulus of elasticity (GPa) | - | 283 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 44.2 |
| Specific thermal capacity (J/kg·°C) | - | 344 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.33 | - | - |
| Deity (kg/dm³) | - | - | 144 |
| Poisson’s coefficient, ν | - | - | 411 |
ASTM A533/A533M A533 Grade C Class 2 Material Machining Technology
ASTM A533/A533M A533 Grade C Class 2 steel is highly weldable, and is typically used in applications where welding is required. The steel is not pre- or post-heat treated before welding, but it must undergo low-temperature preheating to avoid hydrogen embrittlement.