ASTM A276 321 Introduce
Steel is a critical material for many industries, particularly in construction and automotive manufacturing. ASTM A276 321 steel is a versatile steel alloy, as it has many desirable mechanical properties as well as being relatively inexpensive.
Smelting temperature:1362°C - 1615°C
Application:Stainless steel bars and profiles
ASTM A276 321 Material Chemical Composition
The chemical composition of the ASTM A276 321 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nickel (Ni) | 9.0000 | 12.0000 |
| Chromium (Cr) | 17.0000 | 19.0000 |
| PhOsphorus (P) | - | 0.0450 |
| Sulfur (S) | - | 0.0300 |
| Manganese (Mn) | - | 2.0000 |
| Silicon (Si) | - | 1.0000 |
| Carbon (C) | - | 0.0800 |
ASTM A276 321 Material Mechanical Properties
The mechanical properties of the ASTM A276 321 steel are as follows:
| YieldRp0.2 | ≤ 268 (MPa) |
| TeileRm | ≤ 184 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 413 |
ASTM A276 321 Material Thermal Properties
The thermal performance parameters of the ASTM A276 321 steel are as follows:
| Temperature (°C) | 42 | 676 | 347 |
| Modulus of elasticity (GPa) | - | 273 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 43.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 321 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 111 |
| Poisson’s coefficient, ν | - | - | 243 |
ASTM A276 321 Material Machining Technology
ASTM A276 321 steel can be machined using traditional machining techniques, however, care must be taken to ensure that the proper tools are used. It is important to note that ASTM A276 321 steel is more brittle than other types of steel, so it requires higher cutting forces to machine properly.