SUS444 Stainless Steel Cold-Rolled 2B Sheet
Grade:SUS444/UNS 44400/1.4521
Standard:JIS G4305 / ASTM A240 / EN 10088-2
Manufacturing Process:Cold Rolled
Surface Finish:2B
Thickness:0.4 mm–3.0 mm mm
Width:1000–1500mm
Length:2000–6000 mm or Customized
Heat Treatment:Annealed / Stabilized
Surface Condition:Smooth, clean, uniform 2B finish
Edge:Mill Edge (No.1) / Slit Edge
Material Certificate:EN 10204 3.1 MTC
Packaging:PVC Film + Waterproof Paper + Steel Strapping + Wooden Pallet
What is SUS444 stainless steel sheet?
SUS444 stainless steel cold-rolled 2B sheet is a stabilized ultra-low-carbon ferritic stainless steel designed for applications requiring high corrosion resistance, low thermal expansion, and good resistance to chloride-induced stress corrosion cracking. Also known as JIS SUS444, EN 1.4521, and UNS S44400, it contains approximately 17.5%–19.5% chromium and 1.75%–2.50% molybdenum, with titanium (Ti) and/or niobium (Nb) added for stabilization.
Compared with conventional austenitic stainless steels such as 304 and 316, SUS444 offers a lower coefficient of thermal expansion and higher thermal conductivity, making it particularly suitable for equipment exposed to repeated heating and cooling cycles. Its molybdenum content also improves resistance to pitting and crevice corrosion in chloride-containing environments.
SUS444 Stainless Steel plate manufacturer,supplier
GNEE supplies SUS444 / 1.4521 / UNS S44400 cold-rolled stainless steel sheets and coils with a 2B surface finish, available in thicknesses ranging from 0.4 mm to 3.0 mm and widths from 1000 mm to 1500 mm. Customized dimensions can also be provided according to specific project requirements.
To ensure consistent quality between production batches, SUS444 sheets undergo strictly controlled heat treatment and surface processing before shipment. The manufacturing process includes annealing at approximately 850–1050°C, followed by pickling, resulting in a uniform and consistent 2B surface finish.
GNEE also provides value-added processing services, including precision slitting, cut-to-length leveling, protective film application, and laser cutting. These services allow the material to be supplied in finished dimensions, helping customers reduce secondary processing requirements at their own facilities.
If you'd like, let me know:
The thickness and dimensions you need
Your intended application or fabrication process (welding, forming, stamping)
I can help provide specific technical parameters or sourcing advice.
SUS444 stainless steel Specification
Chemical Composition (wt%)
| Element | C | Si | Mn | P | S | Cr | Mo | N | Ti, Nb, or Zr |
| SUS444 | ≤0.025 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 17.00-20.00 | 1.75-2.50 | ≤0.025 | 8×(C+N) to 0.80 |
Mechanical Properties (at Room Temperature)
| Property | Value (Minimum) | Test Method |
| Yield Strength (0.2% Offset) | ≥ 245 MPa (N/mm²) | JIS Z 2241 |
| Tensile Strength | ≥ 410 MPa (N/mm²) | JIS Z 2241 |
| Elongation (A50mm) | ≥ 20 % | JIS Z 2241 |
| Hardness (Rockwell B) | ≤ 96 HRB | JIS Z 2245 |
| Hardness (Vickers) | ≤ 230 HV | JIS Z 2244 |
Physical Properties
| Property | Unit |
| Density | 7.75 g/cm³ |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity (100°C) | 26.8 W/m·K |
| Thermal Expansion (0-100°C) | 10.8 10⁻⁶/K |
| Specific Heat | 460 J/kg·K |
SUS444 Stainless Steel Cold-Rolled Sheet Applications
Water Tanks: Hot water storage tanks and solar water heaters.
Food Processing: Equipment requiring high chloride resistance.
Architecture: Roofing and siding in coastal areas.
Automotive: Exhaust system components (mufflers).
Heat Exchangers: Tubes and plates for corrosive environments.
If you'd like, let me know:
The specific industry or product you are designing forRequired thickness or finish type (#1, #2B, BA)
I can help provide more tailored technical data or fabrication guidelines.
Is SUS444 magnetic?
Yes. SUS444 is a ferritic stainless steel and is strongly magnetic. It is similar to common 430 stainless steel but offers significantly superior performance.
SUS444 Stainless Steel Sheet Price per kg
The price of SUS444 stainless steel plate typically ranges from $1.55 to $4.98 per kilogram, depending on order volume, thickness, and surface finish.
For larger orders (typically 100 kg to 500 kg), the base price is approximately $1.55 to $2.55 per kilogram.
Retail and small-batch orders: Prices for small-quantity purchases or specifications requiring special surface finishes may range from $3.00 to $4.98 per kilogram.
Lead time
In the vast majority of cases, standard SUS444 2B sheets can be delivered within one week; however, if an order must be placed with the steel mill, a lead time of 1.5 to 2 months is required.
Quality Control
Quality control measures may include: 100% chemical composition verification using PMI (portable spectral analysis), dimensional inspection, 2B surface quality checks, surface roughness measurements, cupping/formability tests, and intergranular corrosion testing in accordance with relevant procurement specifications.
To ensure traceability, GNEE can provide inspection documentation compliant with EN 10204 standards (Type 3.1 or 3.2), covering chemical composition, mechanical properties, heat numbers, product dimensions, and inspection results.
GNEE PACKAGING AND SHIPPING
444 stainless steel hot-rolled sheet, packaged in export-standard seaworthy packaging. Each sheet is protected with PVC protective film (optional), waterproof kraft paper, and moisture-proof packaging materials, then securely fixed to a fumigation-free wooden pallet or crate, reinforced with steel straps and corner protectors. Each package is clearly marked with the material grade, dimensions, heat number, purchase order number, and bundle weight.
FAQ
What are the differences between SUS444 and SUS304?
Chemical Composition: SUS444 is a high-chromium ferritic stainless steel (containing 18% Cr and 2% Mo) with no nickel (Ni) content, whereas SUS304 is an austenitic stainless steel (18% Cr, 8% Ni). SUS444 exhibits excellent resistance to chloride-induced stress corrosion cracking (SCC), far surpassing that of SUS304.
Can SUS444 replace SUS316L?
In many corrosion-resistant applications (especially in hot water containing chloride ions), the pitting corrosion resistance (PREN value) of SUS444 is comparable to that of SUS316L. However, in environments involving strong acids or extremely harsh industrial chemical corrosion, SUS316L may offer a broader range of corrosion resistance; an assessment based on the specific medium is required.
Why is SUS444 used for water tanks?
Resistance to Stress Corrosion Cracking (SCC): Municipal tap water contains chloride ions; SUS304 water tanks are prone to stress corrosion cracking-leading to leaks-under conditions of high temperature and pressure, whereas ferritic SUS444 is virtually immune to this type of cracking.
Long Service Life: In hot water applications (such as solar water heaters, air-source heat pump water heaters, and secondary water supply tanks), the service life of SUS444 is typically much longer than that of SUS304.
What precautions should be taken when processing SUS444?
Ductility: Its ductility is slightly lower than that of SUS304; a larger bending radius should be used during bending operations to prevent cracking.
Springback: While the work-hardening rate is low, the higher yield strength results in slightly greater springback during bending compared to SUS304.
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