What is the yield strength of A537 Class 1?

Yield strength is a key metric in assessing steel's suitability for pressure vessels, indicating the stress at which permanent deformation begins.

At Gangsteel, our ASME SA537 Class 1 (A537 Class 1 equivalent) boasts a minimum yield strength of 50 ksi, making it ideal for high-pressure applications. This guide examines the yield strength of A537 Class 1, including variations by thickness, properties, and implications. Review our ASME SA537/SA537M or ASME SA 537 Class 2.

What is A537 Class 1 Material?

A537 Class 1 is normalized PVQ steel with high yield for boilers.

Chemical Composition

Standard table as above.

Mechanical Properties of A537 Class 1

Yield strength: 50 ksi (345 MPa) min for ≤2.5 in thick, 45 ksi (310 MPa) for >2.5 in. This variation accounts for heat treatment effects in thicker sections, ensuring safety factors in design. Tensile: 70-90 ksi.

Table:

Density and Delivery Condition

7.85 g/cm³, normalized.

Available Specifications

6-150mm typically, up to 300mm.

Pricing Insights

$600-1,200/ton.

Equivalent Materials

As above, with similar yields (e.g., P355GH at 355 MPa).

Applications and Advantages

High yield enables thinner, lighter vessels, reducing costs. Used in low-temp services.

Frequently Asked Questions (FAQs) About the Yield Strength of A537 Class 1

What is the yield strength of A537 Class 1?

50 ksi min for standard thickness, dropping to 45 ksi for thicker.

In summary, robust yield for demanding uses. Contact us.

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