JIS G4305 SUS310S Steel Plate | 310S Stainless Stee
General Description
As a professional stainless steel supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present JIS G4305 SUS310S Steel Plate (also known as 310S stainless steel).
SUS310S is a low-carbon austenitic stainless steel under the Japanese standard JIS G4305 for cold-rolled stainless steel plates, sheets and strips. It contains very high chromium (24–26%) and high nickel (19–22%), providing exceptional resistance to high-temperature oxidation and excellent strength at elevated temperatures. The low carbon content improves weldability and minimizes the risk of intergranular corrosion. SUS310S is widely regarded as one of the best standard stainless steels for continuous high-temperature service and is commonly used in furnace components, heat treatment equipment and radiant tubes.
SHH STEEL supplies SUS310S as Mill Direct Supply, sourcing directly from major Chinese stainless steel mills. This ensures competitive mill pricing, consistent quality, shorter lead times and full traceability. We offer thicknesses from 0.5 mm to 6.0 mm (thicker plates available on request), widths up to 1500 mm, in coil or cut-to-length form. All materials are delivered with full Mill Test Certificates.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | JIS G4305 | Full compliance |
| Steel Grade | SUS310S | Confirmed |
| Product Form | Cold-rolled Plate / Sheet / Coil | Available |
| Surface Finish | 2B, BA, No.1, No.4 (common) | Available |
| Thickness Range | 0.5 mm – 6.0 mm (standard) | Custom sizes available |
| Width | Up to 1500 mm | Available |
| Certification | EN 10204 3.1 / Mill Certificate | Available |
Chemical Composition
Chemical composition according to JIS G4305 (Heat Analysis):
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.50 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 24.00 – 26.00 |
| Nickel (Ni) | 19.00 – 22.00 |
Note: The very high chromium and nickel contents give SUS310S outstanding oxidation resistance at temperatures up to approximately 1100°C in continuous service.
Mechanical Properties
Mechanical properties of JIS G4305 SUS310S (annealed condition):
| Property | Value |
|---|---|
| Yield Strength (0.2%) | ≥ 205 MPa |
| Tensile Strength | ≥ 520 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 187 HB |
Density: Approximately 7.90 g/cm³ Magnetic: Non-magnetic in annealed condition.
Surface Finishes
| Finish | Description | Typical Applications |
|---|---|---|
| 2B | Cold-rolled, annealed, pickled, skin-passed | General fabrication |
| BA | Bright Annealed | Cleaner surface applications |
| No.1 | Hot-rolled, annealed and pickled (thicker plates) | High-temperature equipment |
| No.4 | Brushed finish | Visible parts |
Delivery Conditions
SHH STEEL supplies JIS G4305 SUS310S as Mill Direct Supply in annealed condition.
Additional options available:
- Coil or cut-to-length sheets/plates
- Protective film
- Third-party inspection (SGS, BV, TUV, etc.)
Key Characteristics
- Outstanding high-temperature oxidation resistance
- Excellent strength at elevated temperatures
- Superior performance compared with 309S in continuous high-temperature service
- Good weldability due to low carbon content
- Good resistance to thermal cycling
- Non-magnetic in annealed condition
- Suitable for continuous service up to approximately 1100°C
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| SUS310S | JIS G4305 | — |
| 310S | ASTM A240 | American equivalent |
| 1.4845 / X8CrNi25-21 | EN 10088-2 | European equivalent |
| 06Cr25Ni20 | GB/T 3280 | Chinese equivalent |
| UNS S31008 | — | Unified Numbering System |
Applications
JIS G4305 SUS310S is primarily used in severe high-temperature environments. Typical applications include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Heat Treatment Equipment | Furnace parts, radiant tubes, muffles, retorts – 310S Furnace |
| Industrial Furnaces | Baskets, fixtures, trays – 310S Heat Treatment |
| Chemical & Petrochemical | High-temperature reactors and components – 310S Chemical |
| Power Generation | Boiler components, superheater parts – 310S Power |
| Cement & Metallurgical | Kiln parts, high-temperature equipment – 310S Industrial |
| General High-Temperature Use | Thermal processing equipment – 310S High Temperature |
Why Choose SHH STEEL
SHH STEEL provides SUS310S as Mill Direct Supply. We maintain long-term strategic cooperation with major Chinese stainless steel mills and act as a first-level agent. This direct mill supply model allows us to offer competitive mill-direct pricing, faster delivery times, consistent quality, and full Mill Test Certificates for JIS G4305 SUS310S Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective solutions for high-temperature austenitic stainless steel projects. Our professional export team provides technical support on material selection and high-temperature applications.
FAQ
- What is the main advantage of SUS310S over SUS309S?SUS310S has higher chromium (24–26%) and nickel (19–22%) contents, providing superior oxidation resistance and better performance in continuous high-temperature service (up to ~1100°C).
- What does the “S” in SUS310S mean?The “S” indicates low carbon content (≤0.08%), which improves weldability and reduces the risk of intergranular corrosion.
Conclusion
JIS G4305 SUS310S Steel Plate (310S Stainless Steel) from SHH STEEL is a high-chromium, high-nickel austenitic stainless steel offering outstanding high-temperature oxidation resistance and good weldability. As Mill Direct Supply, we provide competitive pricing, consistent quality and full technical support. Trust SHH STEEL for your SUS310S stainless steel requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. JIS G4305 SUS310S Steel Plate, SUS310S, 310S stainless steel, 310S stainless steel plate, SUS310S supplier
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