Grade 444 Stainless Steel Strip High Corrosion Resistance, Precision Cold Rolled

Products Specification

Product Name: 444 Stainless Steel Strip

Material Grade: UNS S44400 / EN 1.4521

Product Overview

444 stainless steel strip is a high-chromium ferritic stainless steel known for its excellent corrosion resistance, particularly in chloride-containing environments. With a low carbon content and added molybdenum, this alloy offers superior resistance to stress corrosion cracking (SCC), pitting, and crevice corrosion. It is a cost-effective alternative to austenitic grades like 304/316 in specific applications.

Key Features

• Corrosion Resistance: Performs exceptionally well in acidic, alkaline, and chloride-exposed environments.

• Heat Resistance: Suitable for high-temperature applications up to 400°C (752°F).

• Weldability: Low carbon content minimizes sensitization and ensures good weldability.

• Formability: Balanced ductility for bending and forming operations.

• Magnetic Properties: Fully magnetic due to its ferritic structure.

Chemical Composition

Mechanical Properties

• Tensile Strength: 415 MPa (60 ksi) min

• Yield Strength: 275 MPa (40 ksi) min

• Elongation: 20% min (in 50 mm)

• Hardness: ≤200 HV (Annealed Condition)

Physical Properties

• Density: 7.75 g/cm³

• Melting Point: 1427–1510°C (2600–2750°F)

• Thermal Conductivity: 24.9 W/m·K (at 100°C)

• Electrical Resistivity: 0.60 μΩ·m

Surface Finish Options

• 2B: Bright cold-rolled finish

• BA (Bright Annealed): Reflective, smooth surface

• No. 3/4: Brushed or polished finishes (customizable)

• Matte: Dull finish for specific industrial uses

Available Dimensions

• Thickness: 0.1 mm – 3.0 mm (0.004" – 0.118")

• Width: 10 mm – 600 mm (0.4" – 24")

• Length: Custom coils or cut-to-length sheets

Typical Applications

• Automotive exhaust systems and catalytic converter shells

• Heat exchangers, water heaters, and solar thermal systems

• Food processing equipment and brewery tanks

• Architectural trim and coastal construction components

• Chemical storage tanks and piping systems

Advantages Over Competing Grades

1. Cost Savings: Lower nickel content reduces material costs compared to 316L.

2. Stress Corrosion Resistance: Outperforms 304/316 in high-chloride environments.

3. Thermal Expansion: Lower thermal expansion than austenitic grades, ideal for thermal cycling.

Packaging

• Protected with anti-rust paper or plastic film

• Securely packed in wooden crates or steel coil racks

• Custom packaging available upon request

Certifications

• Complies with ASTM A240, JIS G4304, and EN 10088-2 standards

• Mill test certificates (MTC) provided with shipment

Notes

• Custom sizes, tempers (annealed, hard rolled), and surface treatments available.

• Contact us for technical support, sample requests, or volume pricing.