ASTM A314 Grade S21904 Introduce
ASTM A314 Grade S21904 steel is an excellent choice for a wide range of applications due to its superior corrosion resistance and strength. The presence of iron, chromium, nickel, molybdenum, and manganese provides this steel with excellent corrosion resistance, durability, strength, and formability. ASTM A314 Grade S21904 steel is also able to be heat treated to enhance its mechanical properties, the steel offers superior strength and durability compared to other common steel materials. It can be used in the manufacturing of bridges thanks to its excellent strength and durability, while its resistance to corrosion makes it ideal for the construction of marine structures and ships. The steel is also used in the automotive and aeronautics industries due to its high impact and fatigue resistance. The metal is also found in pipelines, valves, and other infrastructure as well.
Smelting temperature:1254°C - 1897°C
Application:Specification for stainless steel and steel rods for forging and heat
ASTM A314 Grade S21904 Material Chemical Composition
The chemical composition of the ASTM A314 Grade S21904 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 1.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0600 |
| Nickel (Ni) | 5.5000 | 7.5000 |
| Nitrogen (N) | 0.1500 | 0.4000 |
| Manganese (Mn) | 8.0000 | 10.0000 |
| Chromium (Cr) | 19.0000 | 21.5000 |
| Carbon (C) | - | 0.0400 |
ASTM A314 Grade S21904 Material Mechanical Properties
The mechanical properties of the ASTM A314 Grade S21904 steel are as follows:
| YieldRp0.2 | ≤ 798 (MPa) |
| TeileRm | ≤ 483 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 441 |
ASTM A314 Grade S21904 Material Thermal Properties
The thermal performance parameters of the ASTM A314 Grade S21904 steel are as follows:
| Temperature (°C) | 43 | 841 | 486 |
| Modulus of elasticity (GPa) | - | 218 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 214 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 221 |
| Poisson’s coefficient, ν | - | - | 133 |