Corrosion Resistant 444 Stainless Steel Sheet Molybdenum Alloyed Cold Rolled 1220*2440mm
Price:
2.55
MOQ:
100
Delivery Time:
Negotiable
Product Description
444 Stainless Steel Alloy Sheet
SUS444 stainless steel sheet, also known as AISI 444 or EN 1.4521, is a dual-stabilized ferritic stainless steel containing 2% molybdenum. This alloy offers excellent corrosion resistance comparable to austenitic grades 4401/4404, with higher strength values due to molybdenum content.
Material Specifications
Grade 1.4521 is equivalent to European code 1.4521 and American standard ASTM 444. Stabilization with titanium and niobium creates a fully stabilized microstructure, improving surface properties and achieving elongation to fracture values up to 30% (A80).
Key Applications
- Heat exchangers, boilers, and water heaters
- Stainless steel water tanks and drinking water systems
- Food processing, brewery and wine making equipment
- Solar water heaters
- Automotive components
- Pipes for tap water and drinking-water 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 Characteristics
Excellent cold-forming capability with particular suitability for deep drawing. Lower work hardening rate compared to standard austenitic grades makes it less suitable for stretch forming but easier for cold forming and machining. Minimal susceptibility to "ridging and roping" surface defects.
Welding Properties
Low carbon and nitrogen content with titanium and niobium stabilization reduces sensitization and martensite formation. Grain growth in the heat-affected zone requires minimal heat input. Austenitic fillers are typically used for welding.
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 (68°F/20°C) | 22.50 microhm-in (57 microhm-cm) |
| Specific Heat (32-212°F/0-100°C) | 0.102 BTU/lb·°F (0.427 kJ/kg·K) |
| Thermal Conductivity (212°F/100°C) | 15.5 BTU/hr/ft²/ft/°F (26.8 W/m·K) |
| Mean Coefficient of Thermal Expansion | 6.1 x 10⁻⁶ in/in/°F (11.0 µm/m·K) |
| Modulus of Elasticity | 29 x 10³ ksi (200 x 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 Forms
Coil - Strip, Foil, Ribbon
Wire - Profile, Round, Flat, Square
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 - Contact sales for availability
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
Contact for custom wire finishes
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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