ASTM A240/A240M S30415 Introduce
ASTM A240/A240M S30415 is an international standard that specifies requirements for chromium and chromium-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications. It applies to the following grades: type 304, 304L, 316, 316L, 321, and 347, for rolled and forged products; and type 304H, 347H, 17-4PH, 630, and 631/N08367, for hot- and cold-rolled sheet and strip.
Smelting temperature:1921°C - 1415°C
Application:Heat-resistant chrome and chrome-nickel stainless steel sheets, sheets and strips for pressure vessels
ASTM A240/A240M S30415 Material Chemical Composition
The chemical composition of the ASTM A240/A240M S30415 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nitrogen (N) | 0.1200 | 0.1800 |
| Nickel (Ni) | 9.0000 | 10.0000 |
| Chromium (Cr) | 18.0000 | 19.0000 |
| PhOsphorus (P) | - | 0.0450 |
| Sulfur (S) | - | 0.0300 |
| Manganese (Mn) | - | 0.8000 |
| Silicon (Si) | 1.0000 | 2.0000 |
| Carbon (C) | 0.0400 | 0.0600 |
| Cerium (Ce) | 0.0300 | 0.0800 |
ASTM A240/A240M S30415 Material Mechanical Properties
ASTM A240/A240M S30415 steel has good creep-rupture strength and can be used safely in temperatures up to 1000 degrees Celsius. Its oxidation resistance is also good and it can be used in continuous operation with the higher temperatures without experiencingsignificant damage.
The mechanical properties of the ASTM A240/A240M S30415 steel are as follows:
| YieldRp0.2 | ≤ 677 (MPa) |
| TeileRm | ≤ 556 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 142 |
ASTM A240/A240M S30415 Material Thermal Properties
The thermal performance parameters of the ASTM A240/A240M S30415 steel are as follows:
| Temperature (°C) | 41 | 465 | 923 |
| Modulus of elasticity (GPa) | - | 869 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 434 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 242 |
| Poisson’s coefficient, ν | - | - | 131 |
ASTM A240/A240M S30415 Material Machining Technology
Machining ASTM A240/A240M S30415 steel is a challenging process that requires special knowledge, tools, and techniques to achieve the desired result. The material is highly resistant to corrosion, making it an ideal choice for industries that require a durable and long-lasting machine part. However, due to its high temperature strength and low ductility, machining ASTM A240/A240M S30415 requires specialized tools and setup to achieve a successful outcome. With the proper tools and techniques, machining this material will be a much smoother and successful process with long lasting results.