What is the yield strength of ASTM A537?

the Yield Strength of ASTM A537

In pressure vessel and boiler design, yield strength is a key factor determining a material's ability to withstand deformation under load.

At Gangsteel, we specialize in producing and exporting steels under the ASTM A537/A537M specification, which covers heat-treated carbon-manganese-silicon plates for welded applications.

ASTM A537 includes three classes—Class 1, Class 2, and Class 3—each with distinct yield strengths based on heat treatment and thickness.

This guide from Gangsteel details the yield strengths across classes, helping you select the right material.

For our offerings, explore ASTM A 537 Class 1, ASTM A 537 Class 2, or ASTM A 537 Class 3.

We also supply equivalents under ASME SA537/SA537M, like ASME SA 537 Class 1 and ASME SA 537 Class 2.

Yield Strength of ASTM A537 Class 1

ASTM A537 Class 1 is normalized for good toughness in moderate services.

Its minimum yield strength varies by thickness.

For plates up to 2.5 inches (65 mm) thick, yield is 50 ksi (345 MPa).

For thicker plates (over 2.5 to 4 inches), it drops to 45 ksi (310 MPa).

This adjustment accounts for heat treatment effects in larger sections.

Gangsteel ensures our ASME SA537 Cl.1 meets these specs.

Yield strength table for Class 1:

Yield Strength of ASTM A537 Class 2

ASTM A537 Class 2 is quenched and tempered for higher strength in demanding applications.

Minimum yield is 60 ksi (415 MPa) for up to 2.5 inches thick.

For over 2.5 to 4 inches, it's 55 ksi (380 MPa).

For over 4 to 6 inches, yield is 46 ksi (315 MPa).

This grade suits high-pressure environments.

At Gangsteel, our ASME SA 537 Class 3 offers similar intermediate strengths.

Yield strength table for Class 2:

Yield Strength of ASTM A537 Class 3

ASTM A537 Class 3, also quenched and tempered, provides balanced properties.

Yield is 55 ksi (380 MPa) min for up to 2.5 inches.

For over 2.5 to 4 inches, 50 ksi (345 MPa).

For over 4 to 6 inches, 40 ksi (275 MPa).

It's ideal for applications needing moderate strength with good toughness.

Yield strength table for Class 3:

Factors Affecting Yield Strength

Yield strength in ASTM A537 depends on class, thickness, and heat treatment.

Normalization in Class 1 provides uniform properties.

Quenching and tempering in Classes 2/3 enhance strength but require careful fabrication.

Gangsteel tests plates to confirm values, often exceeding minimums.

Equivalent Materials for ASTM A537

The direct equivalent is ASME SA537/SA537M, with identical specs.

For Class 1: EN 10028-2 P355GH, DIN 19Mn6, JIS SPV355.

Class 2: EN P460NH, JIS SPV490.

These match in yield and use.

Equivalents table:

Applications and Advantages

ASTM A537 suits low-temp, high-pressure vessels due to high yield.

Higher classes enable thinner, lighter designs.

Gangsteel recommends based on project needs.

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

What is the yield strength of ASTM A537?

Varies by class and thickness: Class 1 up to 50 ksi, Class 2 up to 60 ksi, Class 3 up to 55 ksi.

What is the difference between ASTM A537 Class 1 and Class 2?

Class 1 normalized (yield 50 ksi), Class 2 quenched/tempered (60 ksi).

Does yield strength change with thickness in ASTM A537?

Yes, decreases for thicker plates to ensure properties.

In summary, ASTM A537's yield strengths support diverse applications. Contact Gangsteel for supply.

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