JIS G4305 SUS301L Steel Plate | 301L Stainless Steel
What is JIS G4305 SUS301L Steel Plate?
As a professional stainless steel supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present JIS G4305 SUS301L Steel Plate (also known as 301L stainless steel).
SUS301L is a low-carbon version of SUS301 under the Japanese standard JIS G4305 for cold-rolled stainless steel plates, sheets and strips. It retains the high work-hardening characteristic of 301 while offering significantly improved weldability and better resistance to intergranular corrosion due to its reduced carbon content. This makes SUS301L particularly suitable for welded structures that also require high strength after cold forming, such as railway vehicles, transportation equipment and structural components.
SHH STEEL supplies SUS301L 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 0.3 mm to 3.0 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 | SUS301L | Confirmed |
| Product Form | Cold-rolled Plate / Sheet / Coil | Available |
| Surface Finish | 2B, BA, No.4, polished (common) | Available |
| Thickness Range | 0.3 mm – 3.0 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) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.00 – 18.00 |
| Nickel (Ni) | 6.00 – 8.00 |
| Nitrogen (N) | ≤ 0.20 |
Note: The very low carbon content (≤ 0.030%) is the key difference from standard SUS301, providing superior weldability and resistance to intergranular corrosion.
Mechanical Properties
Mechanical properties of JIS G4305 SUS301L (annealed condition):
| Property | Value |
|---|---|
| Yield Strength (0.2%) | ≥ 215 MPa |
| Tensile Strength | ≥ 550 MPa |
| Elongation | ≥ 45% |
| Hardness | ≤ 218 HB |
After cold working, strength can be significantly increased (¼ Hard, ½ Hard, ¾ Hard, Full Hard tempers available).
Density: Approximately 7.93 g/cm³ Magnetic: Generally non-magnetic in annealed condition; becomes slightly magnetic after heavy cold working.
Surface Finishes
| Finish | Description | Typical Applications |
|---|---|---|
| 2B | Cold-rolled, annealed, pickled, skin-passed | General fabrication |
| BA | Bright Annealed | Cleaner and decorative applications |
| No.4 | Brushed finish | Architectural and visible parts |
| Polished | Mirror or custom polish | Decorative and high-end uses |
Delivery Conditions
SHH STEEL supplies JIS G4305 SUS301L as Mill Direct Supply in annealed or various cold-worked tempers (¼H, ½H, ¾H, Full Hard) according to customer requirements.
Additional options available:
- Coil or cut-to-length sheets/plates
- Protective film
- Third-party inspection (SGS, BV, TUV, etc.)
Key Characteristics
- High work-hardening rate → excellent strength after cold working
- Superior weldability compared with standard SUS301
- Excellent resistance to intergranular corrosion
- Good corrosion resistance in mild to moderate environments
- High strength-to-weight ratio
- Available in multiple hardness tempers
- Ideal for welded + cold-formed structural applications
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| SUS301L | JIS G4305 | — |
| 301L | ASTM A240 | American equivalent |
| 1.4318 / X2CrNiN18-7 | EN 10088-2 | Closest European equivalent |
| 022Cr17Ni7 | GB/T 3280 | Chinese equivalent |
| UNS S30103 | — | Unified Numbering System |
Applications
JIS G4305 SUS301L is widely used where high strength after cold working combined with good weldability is required. Typical applications include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Railway & Transportation | Railway cars, structural components – 301L Railway |
| Automotive | Structural parts, body components – 301L Automotive |
| Springs & Fasteners | High-strength springs, clips – 301L Spring |
| Architectural & Construction | Structural panels, supports – 301L Construction |
| Industrial Equipment | Welded high-strength parts – 301L Industrial |
| General Fabrication | Cold-worked + welded components – 301L Fabrication |
Why Choose SHH STEEL
SHH STEEL provides SUS301L 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 SUS301L Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective solutions for low-carbon high work-hardening austenitic stainless steel projects. Our professional export team provides technical support on temper selection, welding and processing.
FAQ
- What is the main difference between SUS301 and SUS301L?SUS301L has much lower carbon content (≤0.030%), which significantly improves weldability and resistance to intergranular corrosion while retaining the high work-hardening characteristics of 301.
- Is SUS301L suitable for welding?Yes. Due to its low carbon content, SUS301L has excellent weldability and is preferred over standard SUS301 for welded structures.
- Is SUS301L magnetic?In the annealed condition it is generally non-magnetic. After heavy cold working it becomes slightly magnetic.
Conclusion
JIS G4305 SUS301L Steel Plate (301L Stainless Steel) from SHH STEEL is a low-carbon high work-hardening austenitic stainless steel offering excellent strength after cold working, superior weldability and good corrosion resistance. As Mill Direct Supply, we provide competitive pricing, consistent quality and full technical support. Trust SHH STEEL for your SUS301L stainless steel requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. JIS G4305 SUS301L Steel Plate, SUS301L, 301L stainless steel, 301L stainless steel plate, SUS301L supplier
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