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Nickel Alloy: Alloy 201

Penn Stainless offers Nickel 201 (UNS N02201) in the following tubular forms:

  • Welded Alloy 201 Pipe
  • Welded Alloy 201 Tube
  • Seamless Alloy 201 Pipe
  • Seamless Alloy 201 Tube

Please click on each of the below tabs to review different sections of the data sheet.

General Properties
Alloy 201, like Alloy 200 is commercially pure with good mechanical properties and high thermal and electrical conductivities.   However, its lower carbon content enables improved performance at elevated temperatures.

Applications

  • laboratory crucibles
  • synthetic fiber production
  • aerospace and missile components
  •  sodium hydroxide handling

 

Specifications

ASTM/ASME……….. UNS N02201

DIN…………………. .  2.4068

Resistance

  • Unlike Alloy 200, Alloy 201 is not subject to embrittlement by intergranularly precipitated carbon or graphite when held at temperatures of 600° to 1400°F for extended times.
     
  • Nickel 201 forms an oxide film that protects it in caustic solutions

Fabrication

  • Nickel 201 can be readily formed by most commercial practices. The same procedures should be used as for Alloy 200, with consideration made for a slightly lower range of mechanical properties

Weldability

  • Alloy 201 can be joined by the same procedures as Nickel 200 with one exception. The oxyacetylene process is not applicable to Nickel 201.

Chemical Properties:

Ni+Co Cu C Mn Si S Fe
Alloy
201
99.0 min

.25 max

.02 max

.35
max

.35
max
.01 max

.40 max

Mechanical Properties:

Grade Tensile Strength (ksi) min Yield Strength 0.2% offset (ksi) min Elongation (% in 50mm) min
Alloy
201

50

10

40

Physical Properties:

Denstiy
lbm/in3
Coefficient of
Thermal Expansion (min/in)-°F
Thermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lbm -°F
at 68 °F at 68 – 212°F at 68 – 212°F
(20 – 100°C)
at 32 – 212°F
0.321 - 550 0.109

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