347H Stainless Steel Plate for High-Temperature & Pressure Applications

347H Stainless Steel Plate

High-temperature stainless steel plate with enhanced creep resistance. 347H stainless steel is a niobium-stabilized austenitic chromium-nickel stainless steel plate specifically developed for sustained service at elevated temperatures. Compared with standard 347 stainless steel, the higher carbon content of 347H improves creep strength and stress rupture resistance, making it a preferred material for high-temperature and high-pressure applications.

Quick Overview

Why Choose 347H Stainless Steel Plate

• Niobium stabilization: prevents chromium carbide precipitation during high-temperature exposure.
• Enhanced creep strength: higher carbon content improves long-term strength under load.
• Excellent oxidation resistance: suitable for oxidizing high-temperature environments.
• Good weldability: widely used for welded pressure vessels and piping components.

Material Considerations

347H stainless steel plate is designed for high-temperature and high-pressure service, typically above 500°C. While it offers good general corrosion resistance, its primary advantage lies in creep strength and thermal stability rather than low-temperature corrosion performance. Proper grade selection should consider service temperature, pressure, and design life.

Why Choose Voyage Metal

• Energy & pressure equipment expertise: proven supply for power and petrochemical projects.
• Strict quality control: chemistry, thickness, flatness, and surface condition verified.
• Full traceability: heat numbers with EN 10204 3.1 mill test certificates.
• Processing services: cutting, machining allowance, and customized dimensions available.

Available Dimensions

Surface Finish

• No.1 (hot rolled, annealed & pickled)
• Pickled surface
• Ground or machined surface (upon request)

Inspection & Documentation

• Chemical composition analysis
• Mechanical property testing
• High-temperature performance verification (if required)
• Mill Test Certificate: EN 10204 3.1

Typical Applications

• Power generation boilers and superheaters
• Pressure vessels and heat exchangers
• Petrochemical and refinery equipment
• High-temperature process vessels
• Structural components for sustained thermal service

Packaging & Shipping

• Wooden pallets or steel frames
• Protective wrapping for export shipment
• Shipping: container or break bulk (depending on plate size)
• Trade terms: EXW, FOB, CFR, CIF, DDP

Request a Quote

To receive an accurate quotation, please provide: thickness, width, length, quantity, and destination port.

Voyage Metal
Website: www.voyagemetal.com
Email: [email protected]