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Help CenterSUS630 Stainless Steel (17-4PH / 1.4542) – High Strength & Corrosion Resistant Steel
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SUS630, also known as 17-4PH or 1.4542, is a precipitation hardening martensitic stainless steel that combines high strength, moderate corrosion resistance, and excellent mechanical properties up to 315°C. It is widely used in aerospace, medical, chemical, and food processing industries.
Delivered in solution-annealed or heat-treated condition (H900–H1150), SUS630 offers excellent dimensional stability and high yield strength.
Key Features:
High tensile strength and hardness after aging
Better corrosion resistance than most martensitic steels
Magnetic in all conditions
Good machinability and weldability
Stable performance under high stress or temperature
Typical Applications:
Aerospace and turbine components
Shafts, gears, fasteners, valve stems
Injection molds and die holders
Medical instruments
Marine and chemical equipment
Available Sizes:
Round Bar: Dia 10–300 mm
Flat Bar / Plate: Thickness 5–100 mm
Conditions: Solution Annealed, H900, H1025, H1150
Cutting & milling available upon request
Packaging & Shipping:
Oil-coated + plastic wrap
Standard export wooden case or pallet
Marked with grade, heat number & size
Includes Material Test Certificate (MTC)
Send Inquiry to This Supplier
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