ASTM A568/A568M CS Type B 1004 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 CS Type B 1004 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:1426°C - 1392°C
Application:Hot rolled and cold rolled high strength low alloy carbon steel sheet
ASTM A568/A568M CS Type B 1004 Material Chemical Composition
The chemical composition of the ASTM A568/A568M CS Type B 1004 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | 0.0200 | 0.0800 |
| Manganese (Mn) | - | 0.3500 |
| PhOsphorus (P) | - | 0.0300 |
| Sulfur (S) | - | 0.0350 |
| Nickel (Ni) | - | 0.2000 |
| Chromium (Cr) | - | 0.1500 |
| Molybdenum (Mo) | - | 0.0600 |
| Copper (Cu) | - | 0.2000 |
| Vanadium (V) | - | 0.0080 |
| Niobium (Nb) | - | 0.0080 |
ASTM A568/A568M CS Type B 1004 Material Mechanical Properties
Heat treatment is an important factor in achieving the desired mechanical properties of ASTM A568/A568M CS Type B 1004 steel. It involves a range of processes, including heating, cooling and altering the chemical and physical structure of the material to increase its strength and toughness. Heat treatment can also be used to enhance weldability by reducing the hardness and toughness of the weld zone.
The mechanical properties of the ASTM A568/A568M CS Type B 1004 steel are as follows:
| YieldRp0.2 | ≤ 753 (MPa) |
| TeileRm | ≤ 875 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 12% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 224 |
ASTM A568/A568M CS Type B 1004 Material Thermal Properties
The thermal performance parameters of the ASTM A568/A568M CS Type B 1004 steel are as follows:
| Temperature (°C) | 41 | 669 | 898 |
| Modulus of elasticity (GPa) | - | 179 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 241 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 212 |
| Poisson’s coefficient, ν | - | - | 331 |