SA302 Grade C PLATE

Manganese–molybdenum alloy steel plate supplied to ASME SA302 Grade C for welded boilers and pressure-vessel applications. Material is specified to deliver a minimum yield strength of 345 MPa and a tensile strength in the 550–690 MPa range, suitable for high‑temperature and high‑pressure service where weldability and toughness are required.

Key features

• Conforms to ASME SA302 Grade C / A302 C requirements
• Minimum yield strength: 345 MPa
• Tensile strength: 550–690 MPa
• Fully killed steel with alloying to improve heat resistance, toughness and weld performance

Quality, testing and finishing services (available on request)

• High-tension (UT/RT as required) testing
• Low-temperature impact (Charpy) testing
• Normalizing for plates thicker than 40 mm
• Simulated post-weld heat treatment (PWHT)
• Rolling and processing to NACE MR0175 requirements (HIC + SSCC control)
• Original mill test certificate issued to EN 10204 format
• Shot blasting and protective painting
• Cut-to-size, edge preparation and shop welding per purchaser specifications

Typical applications

• Industrial boilers and steam generators
• Pressure vessels and heat exchangers
• Shipbuilding (hull and structural sections) and submarine fabrication
• Ducting, piping and structural components for rail, automotive and aerospace suppliers

Supply and ordering

Standard thicknesses, plate sizes, tolerances and surface finishes are available on request. For firm pricing, lead times and material certificates please send an RFQ with required dimensions, heat-treatment/fabrication needs and certification level.