Cold Rolled Bright Surface Corrosion Resistant Stainless Steel Coil and Sheet for Water Tanks
Price:
US $2.55-3.5 / kg
MOQ:
100 kg
Delivery Time:
Negotiable
Product Description
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, with higher strength values due to molybdenum alloying.
Material Specifications
Grade 1.4521 is equivalent to European code 1.4521 and American standard ASTM 444. Stabilization with both titanium and niobium ensures a fully stabilized microstructure with improved surface properties and elongation values up to 30% (A80).
Key Applications
- Food processing equipment
- Brewery and wine making equipment
- Hot-water tanks and heat exchangers
- Automotive components
- Solar water heaters
- Drinking water pipes and environments
Corrosion Resistance
As a molybdenum-alloyed ferritic steel, grade 1.4521 offers localized corrosion resistance close to grade 1.4404/AISI 316. The nickel-free ferritic structure provides excellent resistance to chloride-induced stress corrosion cracking.
Formability & Machining
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 lower work hardening rate makes it less suitable for stretch forming but easier to cold form and machine.
Welding Characteristics
With low carbon and nitrogen contents and dual stabilization, this ferritic steel offers better weldability than many traditional ferritic steels. Grain growth in the HAZ must be controlled by minimizing heat input, with austenitic fillers typically used.
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 (C+N) 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 |
Available 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
Wire Finishes
- XC - Extra clean bright annealed or bright annealed and cold rolled
- Grease - Ultra-bright finish for decorative applications
- Soap - Soap retained as lubricant for tempered wire
Available Forms
Coil - Strip, Foil, Ribbon | Wire - Profile, Round, Flat, Square
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben