ASTM A533/A533M A533 Grade B Class 2 Introduce
ASTM A533/A533M A533 Grade B Class 2 steel plates are mainly made up of iron, carbon, and other alloy elements. The chemical composition of ASTM A533/A533M A533 Grade B Class 2 steel plates differs from grade to grade. ASTM A533/A533M A533 Grade B Class 2 grade A steel plate contains more carbon and less phosphorus and sulfur, while grade B steel plate contains more phosphorus and sulfur, and grade C steel plate contains more carbon.
Smelting temperature:1348°C - 1169°C
Application:Pressure vessel plates, alloy steel, quenched and tempered, manganese, molybdenum and manganese molybdenum nickel
ASTM A533/A533M A533 Grade B Class 2 Material Chemical Composition
The chemical composition of the ASTM A533/A533M A533 Grade B Class 2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Molybdenum (Mo) | 0.4500 | 0.6000 |
| Nickel (Ni) | 0.4000 | 0.7000 |
| 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) | 0.3700 | 0.7300 |
| Molybdenum (Mo) | 0.4100 | 0.6400 |
| Manganese (Mn) | 1.0700 | 1.5000 |
ASTM A533/A533M A533 Grade B Class 2 Material Mechanical Properties
ASTM A533/A533M A533 Grade B Class 2 steel is primarily composed of manganese, sulfur, phosphorus, carbon, and silicon, with trace amounts of nickel, copper, titanium and zirconium. It is classified as an alloy steel due to the presence and combination of these other elements. The mechanical properties of ASTM A533/A533M A533 Grade B Class 2 steel are determined by its composition, and include excellent strength, corrosion resistance and ductility. This superior strength and corrosion resistance allows the steel to be used in applications that require high strength and a high resistance to corrosion, such as pressure vessels. In addition, ASTM A533/A533M A533 Grade B Class 2 steel is also capable of operating seamlessly in low temperatures, making it an ideal choice for many extreme environments.
The mechanical properties of the ASTM A533/A533M A533 Grade B Class 2 steel are as follows:
| YieldRp0.2 | ≤ 147 (MPa) |
| TeileRm | ≤ 254 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 234 |
ASTM A533/A533M A533 Grade B Class 2 Material Thermal Properties
The thermal performance parameters of the ASTM A533/A533M A533 Grade B Class 2 steel are as follows:
| Temperature (°C) | 43 | 985 | 549 |
| Modulus of elasticity (GPa) | - | 961 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 32.2 |
| Specific thermal capacity (J/kg·°C) | - | 424 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 222 |
| Poisson’s coefficient, ν | - | - | 443 |
ASTM A533/A533M A533 Grade B Class 2 Material Machining Technology
ASTM A533/A533M A533 Grade B Class 2 steel is a high strength, corrosion resistant alloy steel that is widely used in the modern industrial and energy development industry. This steel is composed mainly of manganese, sulfur, phosphorus, carbon, and silicon, and is capable of operating seamlessly in extreme low temperature environments. It is ideal for applications that require exceptional strength and a high resistance to corrosion, such as pressure vessels. Its machinability is dependent on its composition, and can be machined with good results using conventional cutting tools. The best technique for machining this steel is turning, and additional techniques such as drilling, tapping and reaming can also provide superior results.