ASTM A656/A656M A656 Type 7 Grade 415 Introduce
ASTM A656/A656M steel is a standard specification for hot-rolled structural steel, high-strength low-alloy plates, and quenched and tempered alloy plates used in the construction of bridges and buildings. {stnadard} is an American Society for Testing and Materials (ASTM) standard.
Smelting temperature:1274°C - 1281°C
Application:High-strength low-alloy hot-rolled structural steel plate with improved forgeability
ASTM A656/A656M A656 Type 7 Grade 415 Material Chemical Composition
The chemical composition of the ASTM A656/A656M A656 Type 7 Grade 415 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | - | 0.1800 |
| Manganese (Mn) | - | 1.6500 |
| PhOsphorus (P) | - | 0.0250 |
| Sulfur (S) | - | 0.0300 |
| Silicon (Si) | - | 0.6000 |
| Vanadium (V) | - | 0.1500 |
| Nitrogen (N) | - | 0.0300 |
| Niobium (Nb) | - | 0.1000 |
| Sulfur (S) | - | 0.0350 |
| Niobium (Nb) | - | 0.1000 |
ASTM A656/A656M A656 Type 7 Grade 415 Material Mechanical Properties
ASTM A656/A656M A656 Type 7 Grade 415 steel is a popular hot-rolled structural steel that is characterized by its excellent strength and ductility. It has a minimum specified yield strength of 50 ksi and a minimum specified tensile strength of 150 ksi, giving it excellent formability and suitability for applications subject to high stress. Additionally, it has a minimum elongation of 18%, making it an ideal choice for components that require stretching without risking failure. With its wide range of mechanical properties, ASTM A656/A656M A656 Type 7 Grade 415 steel is an excellent choice for a variety of applications, from bridges and construction to shipbuilding and industrial equipment.
The mechanical properties of the ASTM A656/A656M A656 Type 7 Grade 415 steel are as follows:
| YieldRp0.2 | ≤ 899 (MPa) |
| TeileRm | ≤ 425 (MPa) |
| ImpactKV/Ku | 42(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) | 412 |
ASTM A656/A656M A656 Type 7 Grade 415 Material Thermal Properties
The thermal performance parameters of the ASTM A656/A656M A656 Type 7 Grade 415 steel are as follows:
| Temperature (°C) | 43 | 251 | 972 |
| Modulus of elasticity (GPa) | - | 636 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 14 |
| Thermal conductivity (W/m·°C) | - | 44.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 213 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 134 |
| Poisson’s coefficient, ν | - | - | 132 |
ASTM A656/A656M A656 Type 7 Grade 415 Material Machining Technology
ASTM A656/A656M A656 Type 7 Grade 415 steel is generally considered to have good machinability, but this can vary depending on the material's hardness. In general, softer steels are easier to cut than harder steels, and thus machinability increases with decreasing hardness.