ASTM A568/A568M Grade 1020 Introduce
The mechanical properties of ASTM A568/A568M Grade 1020 are given as both minimum and maximum requirements. The minimum requirements include tensile strength, yield strength, elongation, and hardness. The maximum requirements include tensile strength, yield strength, elongation, and hardness. ASTM A568/A568M Grade 1020 is suitable for a wide variety of applications due to its various types. It can be used in the construction of buildings, bridges, and other structures as well as for automotive components, electrical enclosures, and other parts. In addition, it is commonly used for industrial parts, fasteners, and fittings.
Smelting temperature:1534°C - 1158°C
Application:Hot rolled and cold rolled high strength low alloy carbon steel sheet
ASTM A568/A568M Grade 1020 Material Chemical Composition
The chemical composition of the ASTM A568/A568M Grade 1020 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.1000 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0300 |
| Manganese (Mn) | 0.3000 | 0.6000 |
| Carbon (C) | 0.1800 | 0.2300 |
ASTM A568/A568M Grade 1020 Material Mechanical Properties
Heat treatment is an important factor in achieving the desired mechanical properties of ASTM A568/A568M Grade 1020 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 Grade 1020 steel are as follows:
| YieldRp0.2 | ≤ 644 (MPa) |
| TeileRm | ≤ 126 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 432 |
ASTM A568/A568M Grade 1020 Material Thermal Properties
The thermal performance parameters of the ASTM A568/A568M Grade 1020 steel are as follows:
| Temperature (°C) | 21 | 222 | 851 |
| Modulus of elasticity (GPa) | - | 829 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 413 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 331 |
| Poisson’s coefficient, ν | - | - | 331 |