A514GrM/A514 Grade M Quenched and Tempered High-Strength Alloy Steel Plate

​Introduction
TJC Steel Group, a renowned manufacturer and supplier of premium steel products, is proud to present A514GrM/A514 Grade M, a quenched and tempered high-strength alloy steel plate that embodies exceptional strength, toughness, and durability. Compliant with ASTM A514/A514M standards, this steel plate is specifically designed for applications requiring exceptional mechanical properties and resistance to harsh environments.
Chemical Composition
The A514GrM alloy steel plate boasts a carefully balanced chemical composition that contributes to its superior performance. The primary elements include:
- Carbon (C): ≤ 0.20%
- Silicon (Si): ≤ 0.35% (some sources indicate ≤ 0.5%, but generally not exceeding 0.5%)
- Manganese (Mn): 1.2% - 1.7% (with some variations noted between 0.90% - 1.65%)
- Phosphorus (P): ≤ 0.025% (some specifications state ≤ 0.035%, but not exceeding 0.035%)
- Sulfur (S): ≤ 0.005% (some specifications allow up to ≤ 0.035%, but not exceeding 0.035%)
Additionally, the alloy contains trace amounts of chromium (Cr), nickel (Ni), molybdenum (Mo), vanadium (V), and titanium (Ti), among others, to further enhance its strength, corrosion resistance, and wear resistance.
Mechanical Properties
The mechanical properties of A514GrM are outstanding, making it an ideal choice for demanding applications. Key mechanical properties include:
- Tensile Strength: Ranging from 1860 MPa to 2410 MPa, depending on the delivery condition and processing method.
- Yield Strength: Between 1400 MPa and 1800 MPa, also influenced by the delivery condition and processing.
- Elongation: 18% - 21%, indicative of excellent ductility and toughness.
- Impact Energy: Above 60J, ensuring high impact resistance even at low temperatures.
Heat Treatment
A514GrM is delivered in a quenched and tempered (Q+T) state, ensuring optimal mechanical properties and stability. The heat treatment process involves heating the steel plate to a temperature not lower than 900°C (1650°F) for quenching, followed by tempering at a temperature not lower than 620°C (1150°F). This treatment imparts the plate with the desired hardness, microstructure, and toughness.
Available Sizes
TJC Steel Group offers A514GrM in a wide range of sizes to cater to various application requirements. Typical dimensions include:
- Thickness: 8mm - 150mm
- Width: 1600mm - 3900mm
- Length: 6000mm - 14000mm
Customized dimensions are also available upon request, including cutting to specific lengths and widths according to customer drawings.
Low-Temperature Impact Testing
A514GrM undergoes rigorous low-temperature impact testing to ensure its performance in extreme conditions. The impact energy values, exceeding 60J, demonstrate the steel's ability to withstand high impact loads even at low temperatures, making it suitable for applications in cold environments.
Key Application Areas
A514GrM's exceptional properties render it a versatile material for multiple industries:
- Marine & Offshore Engineering: Used in the construction of ship structures, ocean platforms, drilling rigs, and port machinery, enhancing corrosion resistance and impact tolerance.
- Mining Equipment: Ideal for components such as vehicle bodies, hoppers, screens, hydraulic supports, and vibrators, prolonging equipment lifespan due to its wear resistance and high fatigue strength.
- Petrochemical Industry: Employed in the fabrication of reactors, vessels, and pipelines, meeting the stringent material requirements of these industries.
- Bridge Construction: Strengthening bridge structures and decks, improving load-bearing capacity and durability.
TJC Steel Group Supply Cases
TJC Steel Group has a proven track record of supplying A514GrM to various prestigious projects worldwide. Recent supply cases include:
- Marine Platforms: Providing steel plates for the construction of an offshore drilling platform, ensuring structural integrity and safety in harsh marine environments.