Duplex 2205 Steel Coil

2205 Duplex Cold Rolled Coil, suitable for offshore engineering applications

2205 Duplex Steel Cold-Rolled Coil (022Cr23Ni5Mo3N), compliant with GB/T 21832-2008, has approximately 50% austenite and 50% ferrite microstructure.

  • High Strength & Lightweight

    Wall thickness can be reduced by 30% under same load

  • Pitting Resistance

    PREN ≥40; no pitting in 3.5% NaCl solution

  • Fatigue Resistance

    10⁷ cycles fatigue strength ≥300 MPa

Product Specifications

Chemical Composition (GB/T 1220-2007)
Element C ≤ Si ≤ Mn ≤ P ≤ S ≤ Cr Ni Mo N
Content % 0.03 1 2 0.035 0.03 22.0–23.0 4.5–6.5 3.0–3.5 0.08–0.20
Physical & Mechanical Properties
  • Density: 7.8 g/cm³

  • Melting Point: 1300–1390 °C

  • Magnetism: Weak

  • Mechanical Properties: Tensile strength ≥620 MPa, elongation ≥25%

Specifications & Supply Dimensions
  • Thickness: 0.5–4.0 mm (tolerance ±0.06 mm)

  • Width: 1000 / 1219 mm

  • Surface: 2B (cold-rolled annealed), customizable passivation

  • Coil Weight: 3–8 t/coil, made-to-order

Pricing Calculation

Workshop & Manufacturing Machine

Coil Feeding into Processing Machine

Parallel Coil Processing Lines

Coil Thickness Measurement

Single Coil Packaging

Factory Coil Storage

Truck Loading of Coils

Product Applications

  • Marine Engineering

    Seawater pipes (1.5 mm × 1000 mm coil)

  • Chemical Equipment

    High-pressure reactors (2.0 mm × 1219 mm coil)

Additional Information

Welding

Use ER2209 welding wire; no preheating required

Delivery

Custom lead time 10–15 days, phase proportion inspection report provided

FAQ

What is duplex 2205 steel coil?

Duplex 2205 is a stainless steel with a mixed austenitic–ferritic structure, offering high strength and excellent corrosion resistance.

What advantages does duplex 2205 coil offer over 316L?

Duplex 2205 provides nearly double the yield strength and better resistance to stress corrosion cracking.

What applications commonly use duplex 2205 coils?

Offshore platforms, pressure vessels, heat exchangers, and chemical processing equipment.

Is duplex 2205 steel coil suitable for welding?

Yes. Proper welding procedures ensure balanced microstructure and corrosion resistance.

Can duplex 2205 coils be processed further?

Yes. Slitting, cut-to-length, and surface finishing services are available.

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