The A702-13 steel grade is a widely used and versatile material in various industries. It offers excellent strength and toughness, making it suitable for a wide range of applications.
Chemical Composition:
– Carbon (C): The A702-13 steel grade typically contains a carbon content between 0.18% and 0.22%. This element improves hardness and tensile strength.
– Manganese (Mn): The manganese content in A702-13 steel is usually around 0.60% to 0.90%. Manganese enhances the steel’s hardenability and strength.
– Phosphorus (P): Phosphorus is typically present in smaller quantities, usually less than 0.03%. It can affect the steel’s strength and toughness.
– Sulfur (S): Sulfur is generally limited to a maximum of 0.035% in A702-13 steel. Higher sulfur content can lead to brittleness and reduced ductility.
Mechanical Properties:
– Tensile Strength: A702-13 steel grade has a minimum tensile strength of 58,000 psi (400 MPa). This high tensile strength allows it to withstand significant loads and stress.
– Yield Strength: The minimum yield strength of A702-13 steel is 45,000 psi (310 MPa). It defines the stress level at which the steel begins to deform permanently.
– Elongation: A702-13 steel has a minimum elongation of 20%. Elongation measures the amount of deformation a material can withstand before it breaks.
– Hardness: A702-13 steel typically has a hardness range of 160 to 180 HB (Brinell hardness). This indicates its overall strength and resistance to penetration.
Standard Number:
A702-13 is the standard designation for this particular steel grade. It is issued by ASTM International, an organization that develops and publishes technical standards for various materials, including steel.
Corresponding Specifications:
The A702-13 steel grade corresponds to several specifications, including:
– ASTM A702: This specification covers two grades of commercial quality hot-rolled steel bars produced for applications requiring general machining, welding, and moderate forming.
– SAE J403: This specification covers the chemistry and mechanical requirements for carbon steels used in the automotive industry.
These specifications provide detailed requirements for the composition, mechanical properties, and manufacturing of A702-13 steel, ensuring its quality and suitability for specific applications.