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Carlson Alloy C 800 Nickel-Iron-Chromium Alloy


Subcategory: Superalloy; Nickel Alloy

Key Words: UNS N08800

Material Notes:
General Description

Carlson Alloy C 800 is a nickel-iron-chromium alloy, combining high strength with excellent resistance to oxidation and carburization at elevated temperatures. This alloy resists sulfur attack, internal oxidation, scaling and corrosion in a wide variety of industrial atmospheres.

The high chromium content of C 800 assures good resistance to oxidation, while the nickel content imparts a fair degree of resistance to stress corrosion cracking.

Carlson Alloy C 800H is essentially the same alloy as C 800 except the carbon content is restricted to the upper portion of the specified range. C 800H also receives a solution-anneal which produces a coarser grain structure. This assures higher creep and rupture strengths, enabling C 800H to be used in applications that require prolonged exposure at elevated temperatures and/or in corrosive environments.


  • Chemical Processing – heat exchangers for nitric acid production; calciners, dryers and recuperators in soda ash plants; process equipment in fiberglass and ore processing plants.
  • Petroleum and Petrochemical – tubing for hydrotreaters and effluent coolers; tubing, manifolds, pigtails and quench lines in hydrogen reformers; flare tips for incinerating waste gasses in refineries; reformer tubing, catalyst grid supports and converters for ammonia production; ethylene furnaces; tubing, bends and flanges for vinyl chloride production; steam superheaters for styrene production.
  • Power Generation – boiler superheaters and reheater tubes and shields; gas turbine combustion cans, transition liners and diffusers.
  • Thermal Processing – baskets and boxes, fixtures and radiant tubes for heat treat furnaces.
  • Steel Production – coke plat quench-car liners and process piping; steam methane reformers and recuperators for direct reduction of iron ore.

Information provided by Carlson

Available Properties
  • Density
  • Tensile Strength @ Break
  • Tensile Strength @ Yield
  • Elongation at Yield
  • Modulus of Elasticity
  • Magnetic Permeability
  • Curie Temperature
  • CTE, linear 68°F
  • Melting Point
Property Data

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