JIS G4305 SUS444 Steel Plate | 444 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 SUS444 Steel Plate (also known as 444 stainless steel).
SUS444 is a high-alloy ferritic stainless steel under the Japanese standard JIS G4305 for cold-rolled stainless steel plates, sheets and strips. It features high chromium (approximately 18–20%) and molybdenum content, combined with very low carbon and nitrogen, and is usually dual-stabilized. This composition gives SUS444 outstanding resistance to pitting, crevice corrosion and stress corrosion cracking — in many environments approaching the performance of 316 austenitic stainless steel — while remaining fully magnetic and more cost-effective. The most common surface finishes are 2B and BA.
SHH STEEL supplies SUS444 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 | SUS444 | 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 SUS444):
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.025 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 17.00 – 20.00 |
| Molybdenum (Mo) | 1.75 – 2.50 |
| Nickel (Ni) | ≤ 1.00 |
| Titanium + Niobium | Stabilizing elements (≥ 0.20 + 4×(C+N)) |
Note: The combination of high Cr + Mo and ultra-low interstitials (C+N) with dual stabilization provides excellent corrosion resistance and weldability.
Mechanical Properties
Mechanical properties of JIS G4305 SUS444 (annealed condition):
| Property | Value |
|---|---|
| Yield Strength (0.2%) | ≥ 245 MPa |
| Tensile Strength | ≥ 410 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 217 HB |
Density: Approximately 7.75 g/cm³ Magnetic: Yes (ferritic)
Surface Finishes
| Finish | Description | Typical Applications |
|---|---|---|
| 2B | Cold-rolled, annealed, pickled, skin-passed – smooth matte finish | General fabrication, industrial, water treatment |
| BA | Bright Annealed – high reflectivity | Decorative, architectural, clean applications |
SHH STEEL mainly supplies 2B and BA finishes for SUS444.
Delivery Conditions
SHH STEEL supplies JIS G4305 SUS444 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
- Excellent pitting and crevice corrosion resistance — SUS444 performance often approaches 316 in many environments
- Outstanding resistance to stress corrosion cracking
- Very good weldability due to low carbon and dual stabilization
- Fully magnetic ferritic structure
- Superior formability among high-alloy ferritic grades
- Cost-effective alternative to 316 for many applications using 444 BA and 444 2B finishes
- High oxidation resistance and thermal conductivity
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| SUS444 | JIS G4305 | — |
| 444 | ASTM A240 | American equivalent |
| 1.4521 / X2CrMoTi18-2 | EN 10088-2 | European equivalent |
| 019Cr19Mo2NbTi | GB/T 3280 | Chinese equivalent |
| UNS S44400 | — | Unified Numbering System |
Applications
JIS G4305 SUS444 (444 BA/2B) is widely used where high corrosion resistance is required at a lower cost than austenitic 316. Typical applications include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Water Treatment & Hot Water | Water heaters, tanks, heat exchangers – 444 Water Heater |
| Automotive | Exhaust systems, mufflers – 444 Automotive |
| Architectural & Construction | Roofing, cladding, exterior panels – 444 BA Architectural |
| Kitchen & Food Equipment | Higher-end equipment – 444 BA Kitchen |
| Industrial Equipment | Chemical and process equipment – 444 Industrial |
| General Fabrication | High-corrosion-resistance formed parts – 444 Fabrication |
Why Choose SHH STEEL
SHH STEEL provides SUS444 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 SUS444 Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective high-performance ferritic stainless steel solutions. Our professional export team provides technical support on material selection, surface finishes and processing.
FAQ
- How does SUS444 compare with 316?In many chloride and hot-water environments, SUS444 offers corrosion resistance close to 316 while being fully magnetic and generally more economical.
- What is the difference between 2B and BA finish for SUS444?2B is a smooth matte finish for general and industrial use. BA is bright annealed with higher reflectivity for decorative and architectural applications.
Conclusion
JIS G4305 SUS444 Steel Plate (444 BA/2B Stainless Steel) from SHH STEEL is a high-performance ferritic stainless steel offering excellent corrosion resistance, good weldability and attractive surface finishes. As Mill Direct Supply, we provide competitive pricing, consistent quality and full technical support. Trust SHH STEEL for your SUS444 stainless steel requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. JIS G4305 SUS444 Steel Plate, SUS444, 444 BA, 444 2B, 444 stainless steel plate, SUS444 supplier
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