Nickel Alloy 200,ALLOY 200 (UNS No.N02200, DIN W.Nr. 2.4066)

Nickel 200  is commercially pure (99.6%) wrought nickel.  It has good excellent resistance and mechinical propeerties  to many corrosive environments.  The other features of alloy 200 are its magnetic and magnetostrictive properties, high thermal and electrical conductivities, low gas content and low vapor pressure. The corrosion resistance of Nickel 200 makes it particularly useful for maintaining product purity in the handling of foods, synthetic fibers, and caustic alkalies; and also in structural applications where resistance to corrosion is a prime consideration.

Other applications of Nickel 200 include chemical shipping drums, electrical and electronic parts, aerospace and missile components.Nickel 200 is normally limited to service at temperatures below 600° F. At higher temperatures Nickel 200 products can suffer from graphitization which can result in severely compromised properties. When operating temperatures are expected to exceed 600° F, carbon content becomes critical.

The lower carbon content of Nickel 201 makes the material resistant to graphitization and therefore less subject to embrittlement. Nickel 200 is approved for construction of pressure vessels and components under ASME Boiler and Pressure Vessel Code Section VIII, Division 1. Nickel 200 is approved for service up to 600° F. Melting point is 2615-2635° F.


  • Highly resistant to various reducing chemicals
  • Excellent resistance to caustic alkalies
  • High electrical conductivity
  • Excellent corrosion resistance to distilled and natural waters
  • Resistance to neutral and alkaline salt solutions
  • Excellent resistance to dry fluorine
  • Widely used to handle caustic soda
  • Good thermal, electrical and magnetostrictive properties
  • Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations


Nickel 200 (UNS N02200) Chemical Composition, %


99.0 min
.40 max
.25 max
.15 max
.35 max
.01 max
.35 max


Mechanical Properties – At room temperature – Annealed condition


0.2 % Yield strength
Tensile strength



  • Food processing equipment
  • Marine and offshore engineering
  • Salt production
  • Caustic handling equipment
  • Manufacture & handling of sodium hydroxide, particularly at temperatures above 300° F
  • Reactors and vessels in which fluorine is generated and reacted with hydrocarbons
  •  chemical processing and storage, synthetic fiber production, and processes where sodium hydroxide and fluorine is used.
  •  aerospace and defense as well as food processing. Nickel 200/201 has exceptional resistance to caustic alkalies at various temperatures and concentrations.


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