What is Difference of SA 283 GR C and SA 516 GR 70?

What is Difference of SA 283 GR C and SA 516 GR 70?

ASME SA 283 GR C and SA 516 GR 70 are both carbon steel plates used in structural and pressure vessel applications, but they differ significantly in strength, heat treatment, and intended use. SA 283 GR C is a low-carbon steel with moderate strength for general structural purposes, while SA 516 GR 70 is a normalized steel with higher tensile strength for pressure vessels operating at moderate and lower temperatures. As a leading Chinese manufacturer and exporter, Gangsteel specializes in asme sa 283/sa 283m plates, including sa 283 grade c steel plate, offering reliable quality for global projects where cost-effective alternatives to higher-strength steels like SA 516 are needed.

Overview of SA 283 GR C and SA 516 GR 70

SA 283 GR C is part of the ASME SA 283 specification for low and intermediate tensile strength carbon steel plates, suitable for welded pressure vessels and structural components where moderate strength suffices. It is not heat-treated beyond basic rolling, making it easier to fabricate but limited in high-pressure applications. In contrast, SA 516 GR 70 is a normalized carbon-manganese steel under ASME SA 516 for pressure vessels, designed for improved notch toughness and higher strength in elevated temperature service.

Gangsteel's sa 283 grade c steel plate provides a cost-effective option for less demanding uses, complementing our range including sa 283 grade a steel plate, sa 283 grade b steel plate, and sa 283 grade d steel plate.

The table below summarizes key differences:

Chemical Composition Comparison

The chemical compositions reflect their purposes: SA 283 GR C has lower carbon for better weldability, while SA 516 GR 70 includes manganese for toughness. Below is a table of typical compositions (in weight %, maximum unless specified):

Gangsteel's sa 283 grade c steel plate adheres to these limits, ensuring easy substitution in projects.

Mechanical Properties and Testing

SA 283 GR C offers a minimum yield of 30 ksi (205 MPa) and tensile of 55-75 ksi (380-515 MPa), with good ductility but no impact testing requirement. SA 516 GR 70 provides higher yield of 38 ksi (260 MPa) and tensile of 70-90 ksi (485-620 MPa), with mandatory Charpy V-notch testing for low-temperature service. Gangsteel's asme sa 283/sa 283m plates meet these specs through quality control, suitable for less demanding applications.

Applications and Interchangeability

SA 283 GR C is used in low-pressure tanks and general structures, while SA 516 GR 70 excels in boilers and high-pressure vessels due to its normalization for better toughness. They are not interchangeable in high-pressure scenarios. Gangsteel's sa 283 grade c steel plate is ideal for cost-sensitive projects, supported by certifications.

FAQ

• What is the main difference in strength between SA 283 GR C and SA 516 GR 70?SA 283 GR C has 55-75 ksi tensile, while SA 516 GR 70 has 70-90 ksi, making it stronger for pressure vessels.
• Is heat treatment different for SA 283 GR C and SA 516 GR 70?SA 283 GR C is as-rolled, SA 516 GR 70 is normalized for improved toughness.
• Can SA 283 GR C replace SA 516 GR 70?No, due to lower strength and lack of normalization; use SA 516 for high-pressure.
• What are common applications for SA 283 GR C?General structures and low-pressure tanks where moderate strength suffices.
• Where can I buy SA 283 GR C plates?Gangsteel offers high-quality plates; contact for sa 283 grade c steel plate.