🟧 Product Overview
ASTM A537 is a heat‑treated pressure vessel steel used for applications requiring higher strength and improved impact toughness. Class 1 is supplied in the normalized condition, while Class 2 and Class 3 are quenched and tempered for significantly higher strength.
A537 is widely used in pressure vessels, boilers, heat exchangers, and high‑strength welded structures in petrochemical, offshore, and industrial sectors.
🟧 Standards
ASTM A537 – Pressure Vessel Plates, Heat‑Treated, Carbon–Manganese–Silicon Steel
Related Standards: ASTM A516, ASTM A515, ASTM A387, EN 10028, JIS G3103, GB Q345R/Q370R
🟧 International Pressure Vessel Steel Standards Comparison Table
Country Standard Common Grades China GB 713 / GB 19189 Q245R, Q345R, Q370R America ASTM A516 / A515 / A537 / A387 / A203 / A204 / A285 / A202 A516 Gr60/70, A515, A537, A387, A203, A204, A285, A202 Germany DIN 17155 HII, 19Mn6 Japan JIS G3103 P235GH, P265GH, P295GH, P355GH France NF A 36‑205 A42CP, A48CP Britain BS 1501 161‑430A/B International (EN) EN 10028 P235GH, P265GH, P355GH
🟧 Available Grades
ASTM A537 Class 1 (Normalized)
ASTM A537 Class 2 (Quenched & Tempered)
ASTM A537 Class 3 (Quenched & Tempered, higher strength)
🟧 Product Specifications & Available Sizes
Dimensions
Thickness: 3 – 20 mm
Width: 1000 – 2000 mm
Coil ID: 508 mm / 610 mm
Coil OD: 900 – 2000 mm
Coil Weight: 3 – 15 MT
Regular Sizes (mm)
Size Size 3.0 × 1500 × C 5.75 × 1800 × C 3.5 × 1500 × C 5.75 × 2000 × C 3.75 × 1500 × C 7.75 × 2000 × C 4.5 × 1500 × C 7.5–11.75 × 1500 × C
🟧 Chemical Composition (ASTM A537 Class 1 – typical)
Element Max (%) C 0.24 Mn 0.70–1.60 P 0.035 S 0.035 Si 0.15–0.50
🟧 Mechanical Properties (ASTM A537 Class 1 – typical)
Property Value Yield Strength ≥ 345 MPa Tensile Strength 485–620 MPa Elongation ≥ 18% Impact Toughness Excellent (normalized condition)
Class 2 / Class 3 (quenched & tempered)
Higher yield and tensile strength
Improved impact toughness for severe service
🟧 Physical Properties
Density: 7.85 g/cm³
Modulus of elasticity: 200 GPa
Thermal expansion: 12×10⁻⁶ /K
🟧 Manufacturing Processes
Hot rolling
Normalizing (Class 1)
Quenching & tempering (Class 2 / Class 3)
Pickling
Leveling
Slitting / Cutting to length
Surface oiling
🟧 Primary Industry Usage
Pressure vessels
Boilers
Heat exchangers
Offshore structures
Petrochemical equipment
High‑strength welded pressure systems
🟧 Why Use ASTM A537 Pressure Vessel Steel Coil
Heat‑treated for superior strength and toughness
Excellent weldability and fabrication performance
Suitable for demanding pressure and structural applications
Available in multiple classes for different strength requirements
🟧 Why Choose WelSteels
Full range of pressure vessel steel coils
Consistent dimensional accuracy
Custom coil cutting and slitting
SGS / BV inspection available
Export‑grade seaworthy packaging
Reliable delivery for global projects
