: : Nickel Alloy 201



Nickel Alloy 201 Composition

Ni 99.0%, C 0.02%, Cu 0.25%, Fe 0.40%, Mn 0.35%, Si 0.35%, S 0.01%

Nickel Alloy 201 Description

Alloy 201 is commerically pure wrought Nickel and prevents enbrittlement by intergranular carbon at elevated temperatures.

  • Good resistance to corrosion in acids and alkalis and is most useful under reducing conditions.
  • Outstanding resistance to caustic alkalis up to and including the molten state.
  • In acid, alkaline and neutral salt solutions the material shows good resistance, but in oxidising salt solutions severe attack will occur.
  • Resistant to all dry gases at room temperature and in dry chlorine and hydrogen chloride may be used in temperatures up to 550C.
  • Resistance to mineral acids varies according to temperature and concentration and whether the solution is aerated or not. Corrosion resistance is better in de-aerated acid.
  • Virtually immune to inter granular attack above 315C, chlorates must be kept to a minimum

Nickel Alloy 201 Applications

  • Manufacture and handling of sodium hydroxide, particularly at temperature above 300C.
  • Production of viscose rayon. Manufacture of soap.
  • Analine hydrochloride production and in the chlorination of aliphatic hydrocarbons such as benzene, methane and ethane.
  • Manufacture of vinyl chloride monomer.
  • Reactors and vessels in which fluorine is generated and reacted with hydrocarbons.
 
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