ASTM A204 grade C Steel Plates, Sheets

High-strength molybdenum-alloy steel plates produced to ASTM A204 Grade C for use in welded boilers, pressure vessels and other high-temperature, high-pressure applications. Grade C is supplied in the as-fabricated condition (no temper or additional heat treatment) and offers higher strength and lower ductility compared with other A204 variants—suitable where strength at elevated temperatures is required.

Key features

• Standard: ASTM A204 Grade C
• Metallurgy: molybdenum-alloy steel optimized for pressure equipment
• Condition: as-fabricated (no temper or treatment)
• Mechanical profile: comparatively higher strength and lower ductility within the A204 family (refer to supplier test data for exact values)

Available forms & typical dimensions (confirm availability before ordering)

• Product form: plates / sheets
• Thickness: specified in supplier listing as “3 mm x 300 mm” (please confirm exact thickness range and tolerances with the seller)
• Widths: 1500 mm, 2000 mm, 2500 mm, 3000 mm
• Lengths: 6000 mm, 12000 mm

Applications

• Welded boilers and furnaces
• Pressure vessels and piping components exposed to elevated temperature
• Heat exchangers and other high-temperature structural parts

Quality & procurement notes

• Supplied to ASTM A204 requirements; buyers should request mill/test certificates and any required third-party inspection reports
• Confirm dimensional tolerances, plate finish, manufacturing route (hot-rolled/normalized) and any post-delivery processing (cutting, beveling) with the supplier prior to purchase

If you require specific mechanical or chemical test values, certification (e.g., MTC), or custom cut-to-length services, specify these requirements when requesting a quote.