ASTM A322 A322 1340 Introduce
ASTM A322 A322 1340 is a versatile steel alloy used in many structural and other applications. Its mechanical properties and versatility make it a popular choice among engineers and designers, who often utilize its heat treatment properties to optimize its performance in many applications. Its broad range of chemical composition and unique mechanical properties make it a popular material choice in a number of industries.
Smelting temperature:1642°C - 1645°C
Application:Alloy steel bar. Level
ASTM A322 A322 1340 Material Chemical Composition
The chemical composition of the ASTM A322 A322 1340 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Copper (Cu) | - | 0.3500 |
| Aluminum (Al) | - | 0.0600 |
| Nickel (Ni) | - | 0.2500 |
| Chromium (Cr) | - | 0.2000 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0400 |
| Manganese (Mn) | 1.6000 | 1.9000 |
| Silicon (Si) | 0.1500 | 0.3500 |
| Carbon (C) | 0.3800 | 0.4300 |
| Silicon (Si) | 0.1500 | 0.3500 |
| Molybdenum (Mo) | - | 0.0600 |
ASTM A322 A322 1340 Material Mechanical Properties
The mechanical properties of ASTM A322 A322 1340 steels are largely dependent on their chemical composition, as well as the heat treating processes utilized. Generally speaking, the higher the carbon content, the higher the tensile strength and lower the ductility. The mechanical strength of the material increases by up to 20% with even small increments in carbon content. This makes ASTM A322 A322 1340 a suitable choice for many structural applications.
The mechanical properties of the ASTM A322 A322 1340 steel are as follows:
| YieldRp0.2 | ≤ 411 (MPa) |
| TeileRm | ≤ 341 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 342 |
ASTM A322 A322 1340 Material Thermal Properties
The thermal performance parameters of the ASTM A322 A322 1340 steel are as follows:
| Temperature (°C) | 21 | 756 | 994 |
| Modulus of elasticity (GPa) | - | 194 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 434 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 241 |
| Poisson’s coefficient, ν | - | - | 223 |
ASTM A322 A322 1340 Material Machining Technology
ASTM A322 A322 1340 is a low-carbon, alloy steel that is typically used for applications requiring higher strength, toughness, and wear resistance. The main alloying elements in the steel are manganese and molybdenum, which together give it superior strength-to-weight ratios. The steel has a hardness between 280 and 350 Brinell, and is generally easily weldable, though preheating or postheating may be necessary in some cases. It is also relatively resistant to corrosion, making it suitable for use in environmentally corrosive environments.