ASTM A537/A537M Steel

Need super strong steel? Our ASTM A537 steel is top grade. It meets strict ASTM standards. We carefully control chemistry. Our steel has optimal strength. It is heavily tested too. Tests ensure durability. Tests guarantee quality. Our A537 steel makes the grade. It outperforms other steels. We give full certification. Mill test reports validate compliance. Customers trust our A537 steel.

ASTM A537 is a heat-treated carbon manganese steel specified for welded pressure vessel applications. It has optimized chemistry with additions of carbon, manganese, phosphorus and sulfur to achieve high strength. A537 steel is readily weldable using manual, automatic or forge welding methods. Preheating may be needed.

Typical uses include boilers, pressure vessels, heat exchangers, condensers, piping in power plants. It serves well in elevated temperature service and provides an optimum balance of high strength, toughness and weldability.

A537 steel is covered under ASME Section II materials specification for pressure vessel applications.

A537 Class 1 – This is the lowest strength grade with a tensile strength range of 70-90 ksi and minimum yield strength of 50 ksi. It has excellent notch toughness.

A537 Class 2 – This grade offers higher strength than Class 1. The tensile strength ranges from 80-100 ksi and yield strength is 60 ksi minimum.

A537 Class 3 – This grade has further increased strength over Class 2. The tensile strength range is 90-110 ksi and yield strength is 70 ksi minimum.

A537 Class 4 – This is the highest strength grade in A537 with tensile strength of 100-115 ksi and a minimum yield strength of 100 ksi. It has the highest allowable design stress.

Thickness: 5 MM – 200 MM

Width: 1220MM – 4200MM

Length: 5000-18000mm

Customize: Available

  • UT (Ultrasonic examination)
  • AR(As Hot Rolled only)
  • TMCP(Thermal Mechanical Control Processing)
  • N(Normalized)
  • Q+T(Quenched and Tempered)
  • Z Direction Test(Z15,Z25,Z35)
  • Charpy V-Notch Impact Test
  • HIC test
  • NDT
  • PWHT( Simulated Post Weld Heat Treatment)
  • NACE0175
  • The Third Party Test (Such as SGS Test)
  • Coated or Shot Blasting and Painting

Available, welcome to consult

A)Packaging Details: Standard export seaworthy packing or as required.
B)Delivery Time:30-50 days, 7 days for stock goods.
C)Loading Port:Shanghai ,Tianjin, Qingdao.
D)Offer Ability:5000MT/Per Month.
E)MOQ:1 Pcs.

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What shapes can it be welded into?

Parameters Of Hot Sale ASTM A537 Steel

A387 Grade 5 Class10.15max0.25-0.660.55max0.0350.03
A387 Grade 5 Class20.15max0.25-0.660.55max0.0350.03
A387 Grade 11 Class10.04-0.170.35-0.730.44-0.860.0350.035
A387 Grade 11 Class20.04-0.170.35-0.730.44-0.860.0350.035
A387 Grade 12 Class10.04-0.170.35-0.730.13-0.450.0350.035
A387 Grade 12 Class20.04-0.170.35-0.730.13-0.450.0350.035
A387 Grade 22 Class10.04-0.150.25-0.660.50max0.0350.035
A387 Grade 22 Class20.04-0.150.25-0.660.50max0.0350.035
GradeTensile Strength(MPa)Yield Strength(MPa)% Elongation in 2 in.(50mm) minImpacting Test  Temperature(°C)
A387 Grade 5 Class1415-58520545-20,40,-60
A387 Grade 5 Class2515-69031045-20,40,-60
A387 Grade 11 Class1415-58524022-20,40,-60
A387 Grade 11 Class2515-69031022-20,40,-60
A387 Grade 12 Class1380-55023022-20,40,-60
A387 Grade 12 Class2450-58527522-20,40,-60
A387 Grade 22 Class1415-58520545-20,40,-60
A387 Grade 22 Class2515-69031045-20,40,-60

Why Choose Gnee ASTM A537 steel

Gnee’s ASTM A537 steel steel is distinguished by its superior quality, performance, and compliance with strict industry standards. At Gnee, we prioritize customer satisfaction and strive to meet our customers’ needs and exceed their expectations. Our ASTM A537 steel steel are manufactured using high-quality materials and advanced production techniques. We employ stringent quality control measures to ensure that each plate meets the highest industry standards. The result is a durable and reliable product that provides long-lasting performance.

And our ASTM A537 steel certified by CE, ISO 9001, AS 9100, SGS, FDA, CE, ABS, BV, CCS, DNV, GL, ASTM, LR, and RINA. We guarantee the highest safety and quality standards. We fulfill all requirements of reputed classification societies.


In addition, our ASTM A537 steel has been successfully exported to more than 60 countries such as Germany, South Korea, the United States, Mexico, and Argentina. Many regular customers come to visit our company and factory and make multiple orders.


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