ASTM A409/A409M S31254 Introduce
ASTM A409/A409M S31254 is a type of single-phase Austenitic stainless steel that has been used in a wide range of applications across different industries. This alloy is one of the more common grades of stainless steel and is known for its superior corrosion resistance, high strength, and durability. The chemical composition of ASTM A409/A409M S31254 is primarily composed of Iron (Fe), Chromium (Cr), Nickel (Ni), Manganese (Mn), Silicon (Si), and Carbon (C). These elements contribute to the mechanical and chemical properties of the alloy and make it an ideal choice for applications where superior corrosion and oxidation resistance are required.
Smelting temperature:1599°C - 1694°C
Application:Corrosion resistant or high temperature resistant large diameter welded austenitic stainless steel tube
ASTM A409/A409M S31254 Material Chemical Composition
The chemical composition of the ASTM A409/A409M S31254 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.8000 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0300 |
| Nickel (Ni) | 17.5000 | 18.5000 |
| Nitrogen (N) | 0.1800 | 0.2200 |
| Molybdenum (Mo) | 6.0000 | 6.5000 |
| Manganese (Mn) | - | 1.0000 |
| Copper (Cu) | 0.5000 | 1.0000 |
| Chromium (Cr) | 19.5000 | 20.5000 |
| Carbon (C) | - | 0.0200 |
ASTM A409/A409M S31254 Material Mechanical Properties
The mechanical properties of the ASTM A409/A409M S31254 steel are as follows:
| YieldRp0.2 | ≤ 156 (MPa) |
| TeileRm | ≤ 146 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 211 |
ASTM A409/A409M S31254 Material Thermal Properties
The thermal performance parameters of the ASTM A409/A409M S31254 steel are as follows:
| Temperature (°C) | 23 | 624 | 213 |
| Modulus of elasticity (GPa) | - | 417 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 134 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 344 |
| Poisson’s coefficient, ν | - | - | 143 |