444 2B Finished Corrosion Resistant Cold Rolled Stainless Steel Coil Sheet for Water Tanks
Price:
2.55
MOQ:
100
Delivery Time:
Negotiable
Product Description
Stainless Steel Coil Sheet Products
444, 443, 441, 436L, 409L, 410, 420, 2B, 2D Finished Stainless Steel Coil Sheet
Product Overview
SUS444 stainless steel sheet, also known as AISI 444 or EN 1.4521, is a dual stabilized ferritic stainless steel containing 2% molybdenum. This grade offers excellent corrosion resistance comparable to austenitic grades 4401/4404 in various applications.
Key Features
- Molybdenum alloying with 18% chromium content for superior corrosion resistance
- Dual stabilization with titanium and niobium for improved microstructure
- Higher strength values compared to grade 1.4509
- Excellent elongation to fracture values up to 30% (A80)
- Approved for drinking water applications by German (DVGW) and Swiss (SVGW) authorities
Technical Specifications
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| Carbon | 0.025 max |
| Manganese | 1.00 max |
| Silicon | 0.60 |
| Chromium | 17.50-19.50 |
| Nickel | 01.00 max |
| Molybdenum | 1.75-2.50 |
| Titanium + Columbium | 0.20 + 4x (Carbon + Nitrogen) min - 0.80 max |
| Phosphorus | 0.040 max |
| Sulfur | 0.030 max |
| Iron | Balance |
Physical Properties
| Property | Value |
|---|---|
| Density | 0.28 lbs/in³ (7.75 g/cm³) |
| Electrical Resistivity | 22.50 microhm-in (57 microhm-cm) at 68°F (20°C) |
| Specific Heat | 0.102 BTU/lb·°F (0.427 kJ/kg·K) at 32-212°F (0-100°C) |
| Thermal Conductivity | 15.5 BTU/hr/ft²/ft/°F (26.8 W/m·K) at 212°F (100°C) |
| Thermal Expansion | 6.1 × 10⁻⁶ in/in/°F (11.0 µm/m·K) at 32-212°F (0-100°C) |
| Modulus of Elasticity | 29 × 10³ ksi (200 × 10³ MPa) |
| Magnetic Permeability | Magnetic |
| Melting Range | 2700 - 2790°F (1482 - 1532°C) |
Mechanical Properties (Annealed)
| Property | Value |
|---|---|
| Ultimate Tensile Strength | 60 KSI min (414 MPa min) |
| Yield Strength (0.2% offset) | 40 KSI min (276 MPa min) |
| Elongation | 22% min |
| Hardness | Rb 90 max |
Material Characteristics
Corrosion Resistance
Grade 1.4521 provides pitting and crevice corrosion resistance superior to most ferritic stainless steels, with performance close to grade 1.4404/AISI 316 austenitic steel. The nickel-free ferritic structure provides excellent resistance to chloride-induced stress corrosion cracking.
Formability
1.4521 can be readily cold-formed by all standard processes and is particularly suitable for deep drawing. The deep drawability is comparable to deep drawing quality carbon steels. The material has lower work hardening rate than standard austenitic grades, making it less suitable for stretch forming applications.
Welding
With low C and N contents and dual stabilization, 1.4521 offers better weldability than many ferritic steels. Grain growth in the HAZ must be controlled by minimizing heat input. Austenitic fillers are typically used for welding.
Available Forms & Finishes
Forms
Coil - Strip, Foil, Ribbon; Wire - Profile, Round, Flat, Square
Standard Finishes
- #1 - Hot rolled annealed and descaled for applications where decorative finish is not required
- #2D - Dull finish for deep drawn parts and applications requiring lubricant retention
- #2B - Smooth finish with brighter appearance than 2D
- #BA - Bright annealed cold rolled
- #CBA - Course bright annealed cold rolled matte finish
- #2 - Cold Rolled
- #2BA - Smooth glossy finish for lightly formed applications
- Polished - Various grit finishes for specific requirements
Not all finishes are available for all alloys
Applications
Food processing equipment, brewery and wine making equipment, hot-water tanks, heat-exchanger tubing, automotive components, boilers, water heaters, pipes for tap water, solar water heaters, and other drinking-water environment applications.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
TSING SHAN STEEL INDUSTRIAL LIMITED
Location
NO.288,Youyi Road Xi Shan Dristrict , Wuxi, Jiangsu, China
Contact Person
Gao Ben