JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
| Payment Terms | T/T, Western Union |
| Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity |
| Packaging Details | standard packing for export |
| 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 |
| Brand Name | TISCO BAOSTEEL |
| Model Number | SUS630 SUS631 |
| Certification | ISO |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, Western Union | Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity | Packaging Details | standard packing for export |
| 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 |
| Brand Name | TISCO BAOSTEEL | Model Number | SUS630 SUS631 |
| Certification | ISO | Place of Origin | China |
| High Light | High Hardness Stainless Steel Plate ，Premium Forged Stainless Steel Plate ，Wear-Resistant Stainless Steel Plate | ||
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 (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.
These alloys achieve superior mechanical properties through solution treatment + aging (precipitation hardening), making them ideal for critical aerospace, chemical, and industrial applications.
| 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) |
JIS (Japanese Industrial Standard): G4303 (SUS630, SUS631)
ASTM (American Standard):
SUS630: A564 (17-4PH)
SUS631: A693 (17-7PH)
AMS (Aerospace Material Spec):
SUS630: AMS 5604, AMS 5643
SUS631: AMS 5528, AMS 5529
Other: EN 10088-3 (European Standard)
✔ 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).
Thickness: 0.5mm – 100mm (custom sizes available)
Width: 1000mm – 2000mm (or as required)
Surface Finish:
Cold-rolled, hot-rolled
Polished (No.4, BA, Mirror)
Blasted, pickled
Forms: Plates, sheets, bars, forgings
Aerospace: Landing gear components, turbine blades
Oil & Gas: Valve shafts, pump parts
Medical: Surgical instruments
Industrial: High-stress bolts, nuclear reactor parts
Springs & Fasteners: High-tension springs, washers
Defense: Missile components, aircraft fittings
Chemical Industry: Heat exchangers, pressure vessels
Precision Engineering: Watch parts, optical instruments
Contact us today for technical support or a customized quote!
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Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
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