ASTM A508/A508M Grade 6 Class 3 Introduce
ASTM A508/A508M Grade 6 Class 3 provides a higher strength-to-weight ratio than standard carbon steels. It can easily be welded and is damage-resistant, decreasing the possibility of stress-induced fatigue failure. The addition of vanadium and niobium improves the microstructure and contributes to the steels superior strength and impact properties. The steel is tested for a variety of conditions for mechanical properties, including hardness, toughness, yield strength, tensile strength, microstructure, elongation, impact resistance, and grain size. ASTM A508/A508M Grade 6 Class 3 offers a number of advantages for applications that require high strength, good impact resistance and increased corrosion resistance. It is an economical solution for a variety of applications, making it a great choice for industrial and commercial projects.
Smelting temperature:1788°C - 1666°C
Application:Carbon steel and alloy steel forgings for quenching and tempering vacuum treatment of pressure vessels
ASTM A508/A508M Grade 6 Class 3 Material Chemical Composition
The chemical composition of the ASTM A508/A508M Grade 6 Class 3 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | 0.2800 | 0.3300 |
| Manganese (Mn) | 0.7500 | 1.1500 |
| PhOsphorus (P) | - | 0.0250 |
| Sulfur (S) | - | 0.0250 |
| Silicon (Si) | - | 0.3500 |
| Nickel (Ni) | 0.7500 | 0.9500 |
| Chromium (Cr) | 0.7000 | 1.0000 |
| Molybdenum (Mo) | 0.3000 | 0.4500 |
| Copper (Cu) | - | 0.2500 |
| Vanadium (V) | - | 0.0500 |
| (Cb) | - | 0.0100 |
| Titanium (Ti) | - | 0.0150 |
| Calcium (Ca) | - | 0.0150 |
| Boron (B) | - | 0.0030 |
| Aluminum (Al) | - | 0.0250 |
ASTM A508/A508M Grade 6 Class 3 Material Mechanical Properties
The mechanical properties of the ASTM A508/A508M Grade 6 Class 3 steel are as follows:
| YieldRp0.2 | ≤ 144 (MPa) |
| TeileRm | ≤ 581 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 23% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 232 |
ASTM A508/A508M Grade 6 Class 3 Material Thermal Properties
The thermal performance parameters of the ASTM A508/A508M Grade 6 Class 3 steel are as follows:
| Temperature (°C) | 22 | 627 | 255 |
| Modulus of elasticity (GPa) | - | 778 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 141 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 112 |
| Poisson’s coefficient, ν | - | - | 221 |