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Carlson Alloy C 20 Plus Austenitic Alloy


Subcategory: Nickel Alloy; Metal; Austenitic

Key Words: UNS N08020

Material Notes:

Carlson C20 Plus is a super-austenitic alloy, developed to provide maximum resistance to corrosion by sulfuric acid. Nickel chromium, molybdenum and copper contribute to the excellent overall resistance of C 20 Plus to chloride stress corrosion cracking and general pitting. Because this alloy is stabilized with columbium, it can be used in the as-welded condition, thus expediting on-site fabrication.


Although C 20 Plus was developed primarily for sulfuric acid applications, it is also widely used in other chemical processing environments. C 20 Plus is employed in flue-gas scrubbers, sulfuric acid pickling, and in various other industries such as petroleum refining, pulp and paper, food and dyes.

  • Chemical Processing – sulfuric acid, phosphoric acid, pesticides, formic and nitric acids, butadiene (synthetic rubber), caustics, solvents, explosives.
  • Petroleum Refining.
  • Flue Gas Scrubbing Systems
  • Pulp and Paper
  • Food and Dye Processing
  • Sulfuric Acid Pickling Equipment.

Information provided by Carlson

Available Properties
  • Density
  • Hardness, Brinell
  • Hardness, Rockwell B
  • Tensile Strength @ Break
  • Tensile Strength @ Yield
  • Elongation at Yield
  • Modulus of Elasticity
  • CTE, linear 68°F
  • Specific Heat Capacity
Property Data

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