ASTM A506 4320 Introduce
ASTM A506 4320 steel is a medium-carbon, cold-rolled steel that is commonly used in structural and automotive applications. It is a common grade of steel; however, its unique mechanical properties give it a number of advantages over other grades.
Smelting temperature:1168°C - 1587°C
Application:Hot-rolled and cold-rolled alloy steel sheets and strips of regular quality and high quality structure
ASTM A506 4320 Material Chemical Composition
The chemical composition of the ASTM A506 4320 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1500 | 0.3000 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 1.6500 | 2.0000 |
| Molybdenum (Mo) | 0.2000 | 0.3000 |
| Manganese (Mn) | 0.4500 | 0.6500 |
| Chromium (Cr) | 0.4000 | 0.6000 |
| Carbon (C) | 0.1700 | 0.2200 |
ASTM A506 4320 Material Mechanical Properties
The mechanical properties of the ASTM A506 4320 steel are as follows:
| YieldRp0.2 | ≤ 414 (MPa) |
| TeileRm | ≤ 737 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 331 |
ASTM A506 4320 Material Thermal Properties
The thermal performance parameters of the ASTM A506 4320 steel are as follows:
| Temperature (°C) | 44 | 991 | 178 |
| Modulus of elasticity (GPa) | - | 728 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 43.2 |
| Specific thermal capacity (J/kg·°C) | - | 144 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.33 | - | - |
| Deity (kg/dm³) | - | - | 242 |
| Poisson’s coefficient, ν | - | - | 432 |
ASTM A506 4320 Material Machining Technology
When it comes to welding, ASTM A506 4320 is easy to weld and machine, however, it is not recommended for welding in an old process, due to its susceptibility to cracking. When welding with ASTM A506 4320, it is important to control temperature and stress.