ASTM A314 Grade 302B Introduce
ASTM A314 Grade 302B is a non-magnetic steel grade which offers exceptional strength, formability, weldability, and good toughness. This steel grade is especially suitable for application requiring superior mechanical properties such as manufacturing fuel tanks, pressure vessels and pressure piping. The grade is also highly corrosion resistant to a wide range of solutions and chemicals as well as providing superior oxidation resistance. The mechanical properties of ASTM A314 Grade 302B make it a versatile and valuable choice for the fabrication of structural components and support. This steel grade is capable of providing exceptional strength with low weight, while also providing good resistance to stress corrosion cracking and other forms of attack. The steel also has high tensile and yield strength, allowing engineers and manufacturers the flexibility to fabricate components with complex shapes, thinner walls, and higher strength than other materials.
Smelting temperature:1251°C - 1476°C
Application:Specification for stainless steel and steel rods for forging and heat
ASTM A314 Grade 302B Material Chemical Composition
The chemical composition of the ASTM A314 Grade 302B steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 2.0000 | 3.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0450 |
| Nickel (Ni) | 8.0000 | 10.0000 |
| Manganese (Mn) | - | 2.0000 |
| Chromium (Cr) | 17.0000 | 19.0000 |
| Carbon (C) | - | 0.1500 |
ASTM A314 Grade 302B Material Mechanical Properties
The mechanical properties of the ASTM A314 Grade 302B steel are as follows:
| YieldRp0.2 | ≤ 785 (MPa) |
| TeileRm | ≤ 882 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 434 |
ASTM A314 Grade 302B Material Thermal Properties
The thermal performance parameters of the ASTM A314 Grade 302B steel are as follows:
| Temperature (°C) | 33 | 211 | 329 |
| Modulus of elasticity (GPa) | - | 696 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 34 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 214 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 314 |
| Poisson’s coefficient, ν | - | - | 231 |