High-Strength Low-Alloy ASTM A514 Carbon Steel Properties

High-Strength Low-Alloy ASTM A514 Carbon Steel Properties

ASTM A514 is a specification for high-yield-strength, quenched and tempered alloy steel plates, often classified as a high-strength low-alloy (HSLA) steel due to its enhanced mechanical properties and low carbon content. It is designed for structural applications requiring superior strength, toughness, and weldability, with a minimum yield strength of 100 ksi (690 MPa) for most thicknesses. The steel's properties are achieved through careful alloying and heat treatment, making it suitable for environments with high wear and impact. As a leading manufacturer and exporter, Gangsteel offers premium ASTM A514/A514M steel plate in various grades, ensuring compliance with the standard for global demands.

Overview of ASTM A514 Steel

ASTM A514 steel plates are available in multiple grades (A, B, C, E, F, H, J, K, M, P, Q, R, S, T), each with specific chemical compositions tailored for different applications and thickness ranges. The material is quenched and tempered to provide greater toughness and strength compared to non-heat-treated carbon steels. Key features include high yield strength, good machinability, and excellent formability, with typical densities around 7.85 g/cm³ (0.284 lb/in³). Gangsteel's offerings include grades like astm a514 grade a for thinner plates and astm a514 grade q for thicker sections up to 8 inches.

Chemical Composition of ASTM A514 Steel

The chemical composition varies by grade to optimize properties such as corrosion resistance and hardenability. Below is a table of typical compositions (in weight %, heat analysis) for select grades, based on ASTM specifications:

Note: Values are maximum unless a range is specified; dashes indicate no requirement. For other grades like astm a514 grade h, compositions are similar but adjusted for specific properties.

Mechanical Properties of ASTM A514 Steel

ASTM A514 exhibits outstanding mechanical properties, with variations based on plate thickness. The following table summarizes typical values across grades:

Additional properties include an elastic modulus of 190-210 GPa (27557-30458 ksi), shear modulus of 80 GPa (11600 ksi), and bulk modulus of 140 GPa (20300 ksi). Poisson's ratio is typically 0.27-0.30.

Physical and Thermal Properties of ASTM A514 Steel

The density of ASTM A514 is approximately 7.85 g/cm³ (0.284 lb/in³). Thermal properties include a specific heat capacity of 0.452 J/g-°C (0.108 BTU/lb-°F) and thermal conductivity of 46.6 W/m-K (323 BTU-in/hr-ft²-°F).

Heat Treatment and Processing of ASTM A514 Steel

ASTM A514 undergoes quenching and tempering to achieve its properties, typically austenitized at 1550-1650°F (843-899°C), quenched, and tempered at 1100-1300°F (593-704°C). This enhances toughness and strength. Gangsteel's production ensures precise heat treatment for grades like astm a514 grade s.

Applications of ASTM A514 Steel

ASTM A514 is used in construction equipment, bridges, mining machinery, and heavy vehicles due to its high strength and wear resistance. Gangsteel's plates support these with customized solutions.

FAQ

• What is the yield strength of ASTM A514 steel?Minimum 100 ksi (690 MPa) for thicknesses up to 2.5 inches, dropping to 90 ksi for thicker plates.
• How does the chemical composition vary between ASTM A514 grades?Grades differ in elements like Cr, Ni, and Mo; for example, Grade E has higher Cr for corrosion resistance.
• What is the hardness range for ASTM A514?Typically 235-293 Brinell (HBW), ensuring wear resistance.
• What are equivalent materials to ASTM A514?Equivalents include AMS 6386, ASTM A517, and EN S700 or EN690 for certain grades.
• Where can I buy ASTM A514 steel plates?Gangsteel manufactures and exports high-quality plates; contact us for ASTM A514/A514M steel plate.