ASTM A240/A240M S31635 Introduce
ASTM A240/A240M S31635 provides the requirements for a wide range of products, ranging from general purpose to stress relieved pressure vessels and related components. It also provides requirements for flat-rolled and cold-rolled sheet, strip and strip-maps, coils, and plates. The specification includes requirements for chemical composition, surface quality, final heat treatment, physical and mechanical properties, heat-resistance, shop surface finishing, and packaging.
Smelting temperature:1774°C - 1688°C
Application:Heat-resistant chrome and chrome-nickel stainless steel sheets, sheets and strips for pressure vessels
ASTM A240/A240M S31635 Material Mechanical Properties
Yield strength refers to the amount of force required to deform a material before it permanently deforms or changes shape. ASTM A240/A240M S31635 steel usually has a yield strength of about 30,000 psi and can be increased further through various treatments.
The mechanical properties of the ASTM A240/A240M S31635 steel are as follows:
| YieldRp0.2 | ≤ 859 (MPa) |
| TeileRm | ≤ 838 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 12% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 214 |
ASTM A240/A240M S31635 Material Thermal Properties
The thermal performance parameters of the ASTM A240/A240M S31635 steel are as follows:
| Temperature (°C) | 43 | 757 | 897 |
| Modulus of elasticity (GPa) | - | 381 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 31.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 334 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 242 |
| Poisson’s coefficient, ν | - | - | 332 |
ASTM A240/A240M S31635 Material Machining Technology
ASTM A240/A240M S31635 steel is more difficult to work with due to its high temperature strength, low ductility, and high yield strength. When machining, the tool must be sharp, and a wider cutting edge must be used to avoid tool failure. Additionally, stainless steel is not suitable for welding, as it requires special procedures to prevent cracking or corrosion.