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Premium Forged Stainless Steel Plate High Hardness Wear-Resistant SUS630 SUS631
| Place of Origin | China |
|---|---|
| Brand Name | TISCO BAOSTEEL |
| Certification | ISO |
| Model Number | SUS630 SUS631 |
| Minimum Order Quantity | 500 kgs |
| Price | 1200-1400 USD/Ton |
| Packaging Details | standard packing for export |
| Delivery Time | 5 - 12 days based on the quantity |
| Payment Terms | T/T, Western Union |
| Supply Ability | 20Ton per week |
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xProduct Details
| Products | Stainless Steel Plate | Grade | SUS630 SUS631 |
|---|---|---|---|
| Thickness | 10.0 -150.0mm | Width | 1500mm 1219mm 1000mm |
| Surface | NO.1 | Brand | BAOSTEEL TISCO |
| Standard | ASTM A240/240M | Loading Port | Shanghai Port |
| Highlight | High Hardness Stainless Steel Plate,Premium Forged Stainless Steel Plate,Wear-Resistant Stainless Steel Plate |
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Product Description
304 316L 321 310S Forged Stainless Steel Plate Superior Strength for HeavyDuty Applications
Products Specification
| Grades | Stainless Steel J1, J2, J4, 201, 202, 301, 304, 304H, 304L, 309, 309S, 310, 310S, 316, 316L, 316TI, 321, 321H, 347, 409, 410, 410S, 420, 430, 441, 904L,630,631,254SMO,253MA,2205,2507.etc |
| Thickness | 10 - 150.0mm |
| Width | 1250 -1500mm or custom other size as request |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, AS PER CUSTOMER’S REQUIREMENT |
| Type of Material | Laser Cutting |
| Form | Plate / coil |
| Test Certificate | Yes. |
| Finish | NO.1, 2B, 2D, 2H, 2R, No.4, HAIRLINE, SCOTCH BRITE, SATIN FINISH, NO.8, BA. |
| Brand | TISCO, LISCO,BAOSTEEL , POSCO, JISCO |
SUS630 & SUS631 Stainless Steel Plates – High-Strength Precipitation-Hardening Alloys
1. Product Overview
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SUS630 (17-4PH) and SUS631 (17-7PH) are premium precipitation-hardening (PH) stainless steels, offering an exceptional combination of high strength, corrosion resistance, and heat resistance.
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These alloys achieve superior mechanical properties through solution treatment + aging (precipitation hardening), making them ideal for critical aerospace, chemical, and industrial applications.
2. Key Parameters & Chemical Composition
| Property | SUS630 (17-4PH) | SUS631 (17-7PH) |
|---|---|---|
| Standard | JIS G4303 / ASTM A564 / AMS 5604 | JIS G4303 / ASTM A693 / AMS 5528 |
| Composition | Cr: 15-17.5%, Ni: 3-5%, Cu: 3-5%, Nb: 0.15-0.45% | Cr: 16-18%, Ni: 6.5-7.75%, Al: 0.75-1.5% |
| Hardening Method | Precipitation hardening (H900, H1150, etc.) | Precipitation hardening (TH1050, RH950, etc.) |
| Tensile Strength | 1100-1300 MPa (H900) | 1030-1450 MPa (TH1050) |
| Yield Strength | 1000-1200 MPa (H900) | 950-1350 MPa (TH1050) |
| Elongation | 10-15% | 5-12% |
| Hardness | HRC 30-40 (depends on aging) | HRC 35-45 (depends on aging) |
| Corrosion Resistance | Excellent (similar to 304 in H1150 condition) | Good (better than 304 in hardened state) |
| Magnetic | Yes (after hardening) | Slightly magnetic (after hardening) |
3. Standards & Certifications
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JIS (Japanese Industrial Standard): G4303 (SUS630, SUS631)
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ASTM (American Standard):
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SUS630: A564 (17-4PH)
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SUS631: A693 (17-7PH)
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AMS (Aerospace Material Spec):
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SUS630: AMS 5604, AMS 5643
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SUS631: AMS 5528, AMS 5529
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Other: EN 10088-3 (European Standard)
4. Key Features & Advantages
✔ Ultra-High Strength – Achieves 3-4x the strength of standard 304/316 stainless steel after heat treatment.
✔ Excellent Corrosion Resistance – Resists pitting, stress corrosion cracking (SCC), and oxidation.
✔ Precision Machinability – Can be machined in annealed condition, then hardened for final use.
✔ Thermal Stability – Retains strength at temperatures up to 300°C (SUS630) / 400°C (SUS631).
✔ Customizable Hardness – Properties can be adjusted via aging temperature (e.g., H900, H1150 for SUS630).
5. Available Specifications
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Thickness: 0.5mm – 100mm (custom sizes available)
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Width: 1000mm – 2000mm (or as required)
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Surface Finish:
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Cold-rolled, hot-rolled
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Polished (No.4, BA, Mirror)
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Blasted, pickled
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Forms: Plates, sheets, bars, forgings
6. Typical Applications
SUS630 (17-4PH) – Best for High-Strength & Moderate Corrosion Resistance
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Aerospace: Landing gear components, turbine blades
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Oil & Gas: Valve shafts, pump parts
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Medical: Surgical instruments
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Industrial: High-stress bolts, nuclear reactor parts
SUS631 (17-7PH) – Best for Spring Applications & High Fatigue Resistance
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Springs & Fasteners: High-tension springs, washers
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Defense: Missile components, aircraft fittings
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Chemical Industry: Heat exchangers, pressure vessels
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Precision Engineering: Watch parts, optical instruments
7. Why Choose Our SUS630/SUS631 Plates?
- Strict Quality Control – Full traceability with MTC (Mill Test Certificates).
- Custom Heat Treatment – Tailored aging process for optimal performance.
- Global Standards Compliance – Meets ASTM, JIS, AMS, and EN requirements.
- Competitive Pricing & Fast Delivery – Stock available for quick shipment.
Contact us today for technical support or a customized quote!
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