ASTM A240/A240M A240 301 Introduce
ASTM A240/A240M A240 301 is a valuable reference for anyone who has to procure stainless steel products for general and stress relieved pressure vessels. It also provides comprehensive product guidance and manufacturing instructions, making it an invaluable tool for engineers, quality control personnel, and stainless steel product manufacturers.
Smelting temperature:1781°C - 1225°C
Application:Heat-resistant chrome and chrome-nickel stainless steel sheets, sheets and strips for pressure vessels
ASTM A240/A240M A240 301 Material Chemical Composition
The chemical composition of the ASTM A240/A240M A240 301 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nitrogen (N) | - | 0.1000 |
| Nickel (Ni) | 6.0000 | 8.0000 |
| Chromium (Cr) | 16.0000 | 18.0000 |
| PhOsphorus (P) | - | 0.0450 |
| Sulfur (S) | - | 0.0300 |
| Manganese (Mn) | - | 2.0000 |
| Silicon (Si) | - | 1.0000 |
| Carbon (C) | - | 0.1500 |
ASTM A240/A240M A240 301 Material Mechanical Properties
The chromium and nickel content of ASTM A240/A240M A240 301 steel gives it increased corrosion resistance, while the molybdenum gives it improved ductility and improved heat and oxidation resistance. The nitrogen content helps to increase its strength.
The mechanical properties of the ASTM A240/A240M A240 301 steel are as follows:
| YieldRp0.2 | ≤ 268 (MPa) |
| TeileRm | ≤ 658 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 44% |
| Reduction in cross section on fractureZ | 42% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 424 |
ASTM A240/A240M A240 301 Material Thermal Properties
The thermal performance parameters of the ASTM A240/A240M A240 301 steel are as follows:
| Temperature (°C) | 42 | 351 | 318 |
| Modulus of elasticity (GPa) | - | 394 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 413 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 411 |
| Poisson’s coefficient, ν | - | - | 342 |
ASTM A240/A240M A240 301 Material Machining Technology
The ideal cutting tools for machining ASTM A240/A240M A240 301 steel are carbide-tipped cutting tools due to their hardness and durability. These tools are designed to provide excellent chip clearance and minimal chatter when machining stainless steel.