Alloy C22 pipe (UNS N06022)

We supply Alloy C22 pipes for projects that require the highest level of corrosion resistance. This advanced nickel-chromium-molybdenum-tungsten alloy outperforms standard grades in both oxidizing and reducing environments, offering exceptional protection against localized corrosion. Available directly from stock or engineered into complete piping packages to meet your exact specifications.

High-quality Alloy C22 pipes

Suited for severe chemical process service

Broad corrosion resistance

Outperforms standard grades in severe media

Oxidizing and reducing service

Suitable for mixed chemical environments

Pitting resistant

Helps resist localized corrosion attack

Crevice corrosion resistance

Highly dependable in demanding wet service

Strong welding

Maintains full structural integrity when welded

Alloy C22 pipes in stock

Responsive Specificatie Tabel
Standard Material Size range Schedules
ASTM/ASME (S)B 622 UNS N06022 ½”–6” Schedule 10S to Schedule 80S

We supply Alloy C22 seamless pipe from stock, specifically intended for severe chemical processing, pollution control, and mixed-media environments. Additional supply options are available for project-driven requirements. All materials are fully certified to meet your technical specifications.

C22 pipe manufacturer: Nippon Steel Corporation (NSC)

Certified supply & additional information

  • EN 10204 / 3.1 certified
  • Dual certified in accordance with ASTM / ASME
  • Material in compliance to International specification
  • Random lengths or cut-to-length
  • Stock delivery times

Upon request

  • Bevelling
  • Additional testing
  • Third-party inspection

Chemical composition

Alloy C22 (UNS N06022) features a highly optimized nickel-chromium-molybdenum-tungsten chemistry. Its elevated chromium content provides significantly better resistance to oxidizing media than other C-alloys.

The limits below serve as a quick reference. Final material compliance is always verified by the EN 10204 3.1 Mill Test Certificate and your specific order requirements.

Element Limit (%)
Nickel (Ni)Balance
Chromium (Cr)20.0 – 22.5
Molybdenum (Mo)12.5 – 14.5
Iron (Fe)2.0 – 6.0
Tungsten (W)2.5 – 3.5
Cobalt (Co)2.5 max.
Manganese (Mn)0.50 max.
Vanadium (V)0.35 max.
Silicon (Si)0.08 max.
Carbon (C)0.015 max.
Phosphorus (P)0.02 max.
Sulfur (S)0.02 max.

Typical physical and mechanical properties of Alloy C22

The data below gives an overall impression of the typical physical and mechanical characteristics of Alloy C22.
Property Unit Typical value
Density lb/in³ 0.314
Melting range °F 2470 – 2550
Modulus of elasticity 10³ ksi 29.2
Shear modulus 10³ ksi 11.2
Poisson’s ratio - 0.31
Thermal conductivity at 70°F Btu-in/h-ft²-°F 76
Specific heat at 70°F Btu/lb-°F 0.091
Electrical resistivity at 70°F µohm-m 1.30
Tensile strength ksi 100 min.
Yield strength (0.2% offset) ksi 45 min.
Elongation % 45

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sales@maass-special-alloys.com

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+31 (0)30 8200 370