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Cold Rolled Bright Surface Corrosion Resistant Stainless Steel Coil and Sheet for Water Tanks

Certification	AISI, ASTM
Minimum Order Quantity	100 kg
Price	US $2.55-3.5 / kg

Product Details

Model Number	444 443 441 436L 409L 410 420	Shape	Flat
Technique	Cold Rolled	Surface Treatment	Bright
Specification	12202440, 15003000, 15006000, 20006000mm	Production Capacity	500000kgs
Carbon Content	0.025 Max	Manganese Content	1.00 Max
Silicon Content	0.60	Chromium Content	17.50-19.50
Nickel Content	01.00 Max	Molybdenum Content	1.75-2.50
Density	7.75 G/cm3	Electrical Resistivity	22.50 Microhm-in
Thermal Conductivity	15.5 BTU/hr/ft2/ft/°F
Highlight	Cold Rolled Stainless Steel Coil , Bright Surface Stainless Steel Sheet , Corrosion Resistant Inox Sheet

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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