JIS G4305 SUS443J1 Steel Plate | 443J1 BA/2B Stainless Steel
General Description
As a professional stainless steel supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present JIS G4305 SUS443J1 Steel Plate (also known as 443J1 stainless steel).
SUS443J1 is a high-chromium ferritic stainless steel under the Japanese standard JIS G4305 for cold-rolled stainless steel plates, sheets and strips. With approximately 20–23% chromium and very low carbon and nitrogen, it provides corrosion resistance comparable to 304 in many atmospheric and mild environments, while being completely nickel-free and fully magnetic. It offers excellent formability, good weldability and significant cost advantages over austenitic 304. The most common surface finishes are 2B and BA.
SHH STEEL supplies SUS443J1 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, 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 | SUS443J1 | Confirmed |
| Product Form | Cold-rolled Plate / Sheet / Coil | Available |
| Surface Finish | 2B, BA (main) | Available |
| Thickness Range | 0.3 mm – 3.0 mm | 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 – typical for SUS443J1):
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.025 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 20.00 – 23.00 |
| Copper (Cu) | 0.30 – 0.80 (typical) |
| Nickel (Ni) | ≤ 0.60 |
| Titanium / Niobium | Stabilizing elements |
Note: High chromium content combined with low interstitials and copper addition provides corrosion resistance close to 304 in many environments without using nickel.
Mechanical Properties
Mechanical properties of JIS G4305 SUS443J1 (annealed condition):
| Property | Value |
|---|---|
| Yield Strength (0.2%) | ≥ 245 MPa |
| Tensile Strength | ≥ 410 MPa |
| Elongation | ≥ 22% |
| Hardness | ≤ 217 HB |
Density: Approximately 7.70 g/cm³ Magnetic: Yes (ferritic)
Surface Finishes
| Finish | Description | Typical Applications |
|---|---|---|
| 2B | Cold-rolled, annealed, pickled, skin-passed – smooth matte finish | General fabrication, appliances, industrial |
| BA | Bright Annealed – high reflectivity | Decorative, kitchen, architectural |
SHH STEEL mainly supplies 2B and BA finishes for SUS443J1.
Delivery Conditions
SHH STEEL supplies JIS G4305 SUS443J1 as Mill Direct Supply in cold-rolled annealed condition with 2B or BA finish.
Additional options available:
- Coil or cut-to-length sheets
- Protective film
- Third-party inspection (SGS, BV, TUV, etc.)
Key Characteristics
- Corrosion resistance close to 304 in many atmospheric and indoor environments
- Completely nickel-free → lower and more stable cost
- Excellent formability and deep-drawing performance
- Fully magnetic
- Good weldability
- Attractive surface finishes (443J1 BA and 443J1 2B)
- High thermal conductivity and lower thermal expansion than austenitic grades
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| SUS443J1 | JIS G4305 | — |
| 443 | ASTM A240 (related) | American related grades |
| 1.4520 / similar | EN 10088-2 | European related grades |
| 021Cr21CuTi / related | GB/T 3280 | Chinese equivalents |
| UNS S44300 related | — | Unified Numbering System |
Applications
JIS G4305 SUS443J1 (443J1 BA/2B) is widely used as a cost-effective alternative to 304. Typical applications include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Kitchen Equipment | Sinks, countertops, range hoods – 443J1 BA Kitchen |
| Home Appliances | Washing machines, refrigerators, panels – 443J1 2B Appliances |
| Architectural & Decorative | Elevator panels, wall cladding – 443J1 BA Decorative |
| Automotive | Trim, decorative parts – 443J1 Automotive |
| Industrial Equipment | Covers, ducts, formed parts – 443J1 Industrial |
| General Fabrication | Deep-drawn and stamped components – 443J1 Fabrication |
Why Choose SHH STEEL
SHH STEEL provides SUS443J1 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 surface quality (especially for BA and 2B finishes), and full Mill Test Certificates for JIS G4305 SUS443J1 Steel Plate.
Customers benefit from reliable supply, short lead times and a cost-effective nickel-free alternative to 304. Our professional export team provides technical support on material selection, surface finishes and processing.
FAQ
- Can SUS443J1 replace 304?In many indoor, atmospheric and mild corrosive environments, SUS443J1 can successfully replace 304 while offering lower and more stable material cost because it contains no nickel.
- Is SUS443J1 magnetic?Yes, it is a ferritic stainless steel and is fully magnetic.
- What is the density of SUS443J1?Approximately 7.70 g/cm³.
Conclusion
JIS G4305 SUS443J1 Steel Plate (443J1 BA/2B Stainless Steel) from SHH STEEL is a high-chromium ferritic stainless steel offering corrosion resistance close to 304, excellent formability and significant cost advantages. As Mill Direct Supply, we provide competitive pricing, consistent quality and full technical support. Trust SHH STEEL for your SUS443J1 stainless steel requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. JIS G4305 SUS443J1 Steel Plate, SUS443J1, 443J1 BA, 443J1 2B, 443J1 stainless steel plate, SUS443J1 supplier
Quality Steel Needed? Inquire for Offers
Related Products
