ASTM A283 Grade C / ASME SA283 Grade C
Both, ASTM A283/A283M and ASME SA283/SA283M standards covers low and intermediate tensile strength carbon steel plates of structural quality. A283 Grade C is typically used for general structural purposes and has a minimum yield strength of 205 MPa (30,000 psi). It is commonly utilized in the construction of buildings, bridges, manufacturing storage tank sand low pressure, temperature controlled vessels.
Typical dimensional ranges for A283 Grade C steel plates are as follows:
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Thickness: 3 mm to 610 mm (11GA to 24 inches)
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Width: 1500 mm to 4064 mm (59 inches to 157.48 inches)
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Length: 3000 mm to 27000 mm (118 inches to 1063 inches)
Chemical Properties
Mechanical Properties
COMPARISON to EQUIVALENT and ALTERNATIVE GRADES
A283 Grade C vs. A36 Steel
Both A283 Grade C and A36 steel have similar chemical compositions, with carbon content ranging from 0.18% to 0.27%, manganese content ranging from 0.60% to 0.90%, and small amounts of other elements. The main difference between these two grades is their tensile strength, where A283 Grade C has a minimum tensile strength of 55,000 psi (380 MPa), while A36 steel has a minimum tensile strength of 58,000-80,000 psi (400-550 MPa). A283 Grade C is typically used for general structural purposes, whereas A36 is used in a wider range of applications, including construction of buildings and bridges.
A283 Grade C vs. A572 Grade 50 Steel
A572 Grade 50 is a high-strength, low-alloy steel plate used in structural applications such as bridges and buildings. A572 Grade 50 has a higher tensile strength than A283 Grade C, with a minimum yield strength of 50,000 psi (345 MPa) and a minimum tensile strength of 65,000 psi (450 MPa). A572 Grade 50 also contains alloying elements such as vanadium and columbium to enhance its properties further. A283 Grade C is considered a lower-strength carbon steel in comparison, suitable for less demanding applications.
A283 Grade C vs. A516 Grade 70 Steel
A516 Grade 70 is a pressure vessel-quality, carbon steel plate used for moderate and lower-temperature service in pressure vessels. It has a higher tensile strength and yield strength compared to A283 Grade C, with a minimum tensile strength of 70,000 psi (485 MPa) and a minimum yield strength of 38,000 psi (260 MPa). A516 Grade 70 is primarily used in applications where elevated temperatures and pressure are involved, such as in the petrochemical and oil and gas industries. On the other hand, A283 Grade C is used for general structural applications and is not suitable for pressure vessel applications.
In summary, A283 Grade C steel is a low to intermediate tensile strength carbon steel plate used primarily for general structural purposes. While it shares some similarities with other grades like A36, it has distinct differences in terms of tensile strength, yield strength, and specific applications. When selecting a steel grade, it's essential to consider the specific requirements of the intended application to ensure the material's suitability.
