ASTM A515/A515M A515 415 Introduce
ASTM A515/A515M A515 415 is a standard that covers carbon-silicon steel plates primarily used for intermediate- and higher-temperature service in welded boilers and other pressure vessels. The steel plates are available in four grades with different strength levels, including A515 Gr 60, A515 Gr 65, A515 Gr 70 and A515 Gr 70N. The mechanical property requirements are specified in the specification, including the tensile strength and yield strength. The fabrication and heat treatments are also specified in the specification.
Smelting temperature:1285°C - 1518°C
Application:Medium and high temperature pressure vessel plate, carbon steel
ASTM A515/A515M A515 415 Material Chemical Composition
The chemical composition of the ASTM A515/A515M A515 415 steel are as follows:
| Element | Min | Max |
|---|---|---|
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0350 |
| Manganese (Mn) | - | 0.9000 |
| Silicon (Si) | 0.1500 | 0.4000 |
| Carbon (C) | - | 0.3100 |
ASTM A515/A515M A515 415 Material Mechanical Properties
The chemical composition of ASTM A515/A515M A515 415 steel lends itself to exceptionally high levels of hardness and strength. The combination of carbon, manganese, and phosphorus provides reinforcement against tensional loads and helps resist deformation, making it an excellent choice for heavy-duty applications. Grade 75 steel is particularly well suited for high-pressure applications due to its outstanding hardness.
The mechanical properties of the ASTM A515/A515M A515 415 steel are as follows:
| YieldRp0.2 | ≤ 536 (MPa) |
| TeileRm | ≤ 242 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 44% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 142 |
ASTM A515/A515M A515 415 Material Thermal Properties
The thermal performance parameters of the ASTM A515/A515M A515 415 steel are as follows:
| Temperature (°C) | 11 | 414 | 646 |
| Modulus of elasticity (GPa) | - | 779 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 341 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 213 |
| Poisson’s coefficient, ν | - | - | 124 |
ASTM A515/A515M A515 415 Material Machining Technology
When machining ASTM A515/A515M A515 415 steel, there are several types of tools and methods which can be used. These include drill press and lathe machines, cutting tools such as turning tools and milling tools, grinders and deburring tools, and cutoff tools such as bandsaws and abrasive saws. Depending on the application and desired end result, one or more of these tools or methods may be used in the machining process.