Nickel 201

┃ Material

Nickel 201, UNS N02201, W.Nr.2.4061 (LC-Ni99.6), W.Nr.2.4068 (LC-Ni99.2), N5

┃ Overview

Nickel 201 is commercially pure (99.0%) wrought nickel. It has good mechanical properties and excellent resistance to many corrosive environments. Other useful features of the alloy are its magnetic and magnetostrictive properties, high thermal and electrical conductivities, low gas content and low vapor pressure.

┃ Characteristics

Nickel 201 is characterized by:

(1) Excellent resistance in alkaline media

(2) High ductility in a wide temperature range

(3) Ferromagnetism

(4) High electrical and thermal conductivity

┃ Application

Typical applications are:

Food manufacturing such as handling of cooling brine, fatty acids and fruit juices due to the material’s resistance against acids, alkalis and neutral salt solutions and against organic acids

Tanks in which fluorine is produced and where it reacts with hydrocarbon (CFC) due to the material’s resistance against fluorine

Storage and transport of phenol

Production and treatment of caustic soda

Production of synthetic fibers and soaps

Production of hydrogen chloride and chlorination of hydrocarbons such as benzene, methane and ethane

Production of vinyl chloride monomer due to the material’s resistance against dry chlorine gas and hydrogen

chloride in increased temperatures

Electrical and electronic components

Electrode contacts and current conductors in batteries

Current conductors in alkali fuels

┃ Chemical composition (wt% as per ASTM B161)

Material	Ni	Cu	Fe	Mn	C	Si	S
Nickel 201	≥99.0	≤0.25	≤0.40	≤0.35	≤0.02	≤0.35	≤0.010

┃ Typical Mechanical Properties (as per ASTM B161)

Condition	Tensile strength		Yield strength		Elongation
	N/mm²	ksi	N/mm²	ksi	% in 2”
Annealed	≥345	≥50	≥80	≥12	≥35

┃ High temperature properties

Nickel 200 is normally limited to service at temperatures below 600°F (315°C). At higher temperatures Nickel 200 products can suffer from graphitization which can result in severely compromised properties. For service above 600°F (315°C), Nickel 201 is preferred.

┃ Corrosion resistance

Nickel 200 is highly resistant to many corrosive media. Although most useful in reducing environments, it can be used also under oxidizing conditions that cause the development of a passive oxide film. The outstanding resistance of Nickel 200 to caustics is based on this type of protection.

In all environments, when temperatures above 600°F (315°C) are involved, the preferred material is Nickel 201.

┃ Available Process

(1) Hot formed, annealed, descaled

(2) Cold worked and bright annealed

(3) Cold worked, annealed, polished (MP, EP etc.)

┃ Common Tests

Chemical composition

Tension

Hardness

Flaring

Flange

Flattening

Micro structure

Hydrostatic

NDT

Intergranular Corrosion

Surface condition

Shape and dimension

Positive Material Identification