ASTM A568/A568M Grade 1022 Introduce
ASTM A568/A568M is an American material standard for steel that covers both hot-rolled and cold-rolled carbon steel sheets and strips. It was first issued in 1994 and revised in 2020. ASTM A568/A568M Grade 1022 is used for steel products such as coils, sheets, bars, strips, plates, and structural shapes such as angles, channels and rounds. This material is regarded as high-quality and is specified for a wide variety of purposes.
Smelting temperature:1414°C - 1614°C
Application:Hot rolled and cold rolled high strength low alloy carbon steel sheet
ASTM A568/A568M Grade 1022 Material Chemical Composition
The chemical composition of the ASTM A568/A568M Grade 1022 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.1000 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0300 |
| Manganese (Mn) | 0.7000 | 1.0000 |
| Carbon (C) | 0.1800 | 0.2300 |
ASTM A568/A568M Grade 1022 Material Mechanical Properties
The mechanical properties of ASTM A568/A568M Grade 1022 steel are primarily based on yield strength and tensile strength. The yield strength is the amount of force required to permanently deform (compress) the material, while the tensile strength is the amount of force required to stretch the material to its ultimate limit. ASTM A568/A568M Grade 1022 also includes requirements for minimum thickness, hardness, elongation, electrical resistance and chemical composition.
The mechanical properties of the ASTM A568/A568M Grade 1022 steel are as follows:
| YieldRp0.2 | ≤ 225 (MPa) |
| TeileRm | ≤ 343 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 141 |
ASTM A568/A568M Grade 1022 Material Thermal Properties
The thermal performance parameters of the ASTM A568/A568M Grade 1022 steel are as follows:
| Temperature (°C) | 21 | 159 | 838 |
| Modulus of elasticity (GPa) | - | 755 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 33.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 443 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 332 |
| Poisson’s coefficient, ν | - | - | 233 |