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Grade A537 1 in. x 96 in. x 240 in. steel plate front view.
Grade A537 1 in. x 96 in. x 240 in. steel plate right view.
Grade A537 1 in. x 96 in. x 240 in. steel plate top view.

ASTM A537 Heat-Treated PVQ Steel Plate

ASTM A537 is a heat-treated pressure vessel quality steel plate used for boilers, pressure vessels and welded structures that require higher strength and improved toughness.

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Features

  • Available in three classes: 1, 2 and 3.

  • Class 1 is normalized.

  • Classes 2 and 3 are quenched and tempered.

  • Used in the oil, gas and petrochemical industry.

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Product Details

Grade Thickness Width Length
A537 Class 1 3/16" – 4" 48" – 120" Up to 480"
A537 Class 2 3/16" – 4" 48" – 120" Up to 480"
A537 Class 3 3/16" – 6" 48" – 120" Up to 480"
Class Yield Point (ksi) Tensile Strength (ksi) Elongation %
1 - ≤2.5" thick 50 70-90 22
1 - >2.5" to ≤4" thick 45 65-85 22
2 - ≤2.5" thick 60 80-100 22
2 - >2.5" to ≤4" thick 55 75-95 22
2 - >4" thick 46 70-90 20
3 - ≤2.5" thick 55 80-100 22
3 - >2.5" to ≤4" thick 50 75-95 22
3 - >4" thick 40 70-90 20
1 - >4" thick 45 65-85 20
Carbon max 0.24%
Manganese 0.70-1.60%
Phosphorus max 0.025%
Sulfur max 0.025%
Silicon 0.15-0.50%
Copper max 0.35%
Vanadium max 0.08%
Chromium max 0.25%
Nickel max 0.25%
Molybdenum max 0.08%

Grade Comparison

Frequently Asked Questions

Learn more about A537 steel plate.
ASTM A537 and ASTM A516 are both pressure vessel quality steel plate specifications, but A537 is heat-treated to increase yield and tensile strength, especially when compared to A516 grades. A537 is used for boilers, pressure vessels and welded structures that require higher strength and improved toughness, while A516 is commonly used for welded pressure vessels in moderate and lower-temperature service where notch toughness is important. The right choice depends on the vessel design, required strength, heat-treatment needs, service temperature and project specification.
ASTM A537 steel plate is used for boilers, pressure vessels and welded structures that require heat-treated pressure vessel quality steel. It is commonly used in oil, gas and petrochemical applications where higher strength and improved toughness are important.
ASTM A537 classes are separated by heat treatment and mechanical performance. Class 1 is normalized, while Classes 2 and 3 are quenched and tempered. Classes 2 and 3 generally provide higher strength than Class 1, making them better suited for more demanding pressure vessel applications.
A537 steel plate is heat-treated to improve strength and toughness for pressure vessel and boiler applications. Class 1 is normalized to refine the steel structure, while Classes 2 and 3 are quenched and tempered to achieve higher strength levels for more demanding service conditions.
Charpy impact testing is not required for every ASTM A537 order, but it may be requested when a pressure vessel application requires verified impact toughness. Supplemental Charpy V-notch impact testing may be ordered for applications where low-temperature toughness or project-specific impact performance is important.