JIS G4304 SUS630 Stainless Steel Plate Stock

Gangsteel stocks a wide range of JIS G4304 SUS630 stainless steel plates (also known as 17-4PH) in our stainless steel stock. This precipitation-hardening martensitic grade can be heat treated to achieve very high strength and hardness while maintaining good corrosion resistance.

Key Characteristics of SUS630

SUS630 combines the corrosion resistance of austenitic grades with the high strength of martensitic stainless steels. In our stainless steel stock, we keep both annealed and aged condition plates to serve different customer requirements.

Common Applications

This grade is widely used in aerospace components, oil and gas equipment, valve bodies, pump shafts, turbine blades, and high-strength fasteners where both mechanical performance and moderate corrosion resistance are required.

Available Stock Specifications

Common sizes available in our stainless steel stock:

• Thickness: 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 20mm
• Width: 1500mm, 2000mm
• Length: 3000mm, 6000mm We also stock plates in solution-annealed and H900/H1150 aged conditions for immediate use.

Advantages and Comparisons

SUS630 offers approximately 3-4 times higher yield strength than SUS304 after proper aging treatment, making it ideal when high strength is needed without sacrificing too much corrosion resistance.

Processing and Fabrication Tips

Plates from our stainless steel stock can be machined, welded, and heat treated. Proper aging treatment (typically at 480-620°C) is critical to achieve desired mechanical properties. Gangsteel provides guidance on heat treatment procedures and precision machining services.

Why Choose Gangsteel Stainless Steel Stock

Our stainless steel stock ensures fast availability of JIS G4304 SUS630 plates with full certification. We support small to large orders and offer value-added services such as cutting, machining, and testing to meet your project timeline.

When strength and reliability are critical, JIS G4304 SUS630 stainless steel plates from Gangsteel stainless steel stock deliver outstanding performance.

JIS G4304 SUS630 Chemical Composition, %

What are the characteristics of JIS G4304 SUS630 Stainless?

• Oxidation resistance to 2000°F
• Moderate strength at high temperature
• Resistance to hot corrosion
• Strength and toughness at cryogenic temperatures

Typical Applications for JIS G4304 SUS630 Stainless

• Kilns
• Heat Exchangers
• Radiant Tubes
• Muffles, retorts, annealing covers
• Tube hangers for petroleum refining and steam boilers
• Coal gasified internal components
• Staggers
• Furnace parts, conveyor belts, rollers, oven linings, fans
• Food processing equipment
• Cryogenic structures

Fabrication with Stainless JIS G4304 SUS630

Type JIS G4304 630 is readily fabricated by standard commercial procedures. In comparison to carbon steel,             stainless steels are tougher and tend to work harden rapidly.

Type JIS G4304 630 can be welded using all of the common welding processes.

JIS G4304 SUS630 Mechanical Properties
Representative Tensile Properties

Gangsteel Stainless Factory is the large manufacturer for ASTM, ASME, JIS, EN, UNS Stainless plate

and sheet. We have about 3000tons each thickness and size stainless plates and large warehouse.

If you have any requirement for stainless plate in competitive price and faster delivery time, please contact us.

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