ASTM A514/A514M Grade A Introduce
American Society for Testing and Materials (ASTM) is a not-for-profit organization that was founded in 1898 for the development and publication of voluntary consensus standards in materials, products, systems, and services. ASTM has developed over 12,000 standards over the years, including the ASTM A514/A514M Grade A steel standard in 1987. The ASTM A514/A514M steel standard specification used to evaluate the hardenability, mechanical properties, chemical composition, and weldability of heat-treated steel alloys.
Smelting temperature:1676°C - 1413°C
Application:High yield strength alloy steel plate for tempering and quenching for welding
ASTM A514/A514M Grade A Material Chemical Composition
The chemical composition of the ASTM A514/A514M Grade A steel are as follows:
| Element | Min | Max |
|---|---|---|
| Boron (B) | - | 0.0025 |
| Molybdenum (Mo) | 0.1800 | 0.2800 |
| Chromium (Cr) | 0.5000 | 0.8000 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0350 |
| Manganese (Mn) | 0.8000 | 1.1000 |
| Silicon (Si) | 0.4000 | 0.8000 |
| Carbon (C) | 0.1500 | 0.2100 |
| Zirconium (Zr) | 0.0500 | 0.1500 |
ASTM A514/A514M Grade A Material Mechanical Properties
ASTM A514/A514M Grade A steel is commonly used in engineering applications where weight reduction with improved strength is desirable. The exceptional weldability of A514 steel enables it to be used in structural components and, due to its excellent fatigue properties, it is also suitable for applications where high-frequency vibrations are encountered. ASTM A514/A514M Grade A steel has also been found to be suitable for challenging applications such as pressure vessels, storage tanks, and ships.
The mechanical properties of the ASTM A514/A514M Grade A steel are as follows:
| YieldRp0.2 | 279 (≥)(MPa) |
| TeileRm | 245 (≥)(MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 241 |
ASTM A514/A514M Grade A Material Thermal Properties
The thermal performance parameters of the ASTM A514/A514M Grade A steel are as follows:
| Temperature (°C) | 33 | 627 | 629 |
| Modulus of elasticity (GPa) | - | 653 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 44.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 343 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 124 |
| Poisson’s coefficient, ν | - | - | 411 |
ASTM A514/A514M Grade A Material Machining Technology
ASTM A514/A514M Grade A steel is an ultra-high-strength quenched and tempered alloy steel composed of Carbon, Manganese, Phosphorus, Sulfur, Silicon, Nickel, and Chromium. This steel can be heat treated to achieve greater hardness and strength than regular carbon steel. It is resistant to wear and corrosion and is used in a variety of applications, including construction and mining equipment, earthmoving equipment, agricultural equipment, and pipeline construction.