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Nickel Alloy: Monel© 400

Penn Stainless offers Nickel 400 (UNS N04400) in the following tubular forms:

  • Welded Alloy 400 Pipe
  • Welded Alloy 400 Tube
  • Seamless Alloy 400 Pipe
  • Seamless Alloy 400 Tube

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

General Properties
Alloy 400 is a nickel-copper alloy with high strength and corrosion resistance over a wide temperature range.

Applications

  • chemical processing equipment
  • crude petroleum stills
  • hydrocarbon processing
  • marine fixtures

 

Specifications

ASTM/ASME……….. UNS N04400

DIN…………………. .  2.4360

Resistance

  • Alloy 400 is generally more resistant to attack by oxidizing agents than higher copper alloys. This versatility makes alloy 400 suitable for service in a variety of environments.

  • Alloy 40offers outstanding resistance to hydrofluoric acid in all concentrations up to the boiling point.  It is quite possibly the most resistant of all commonly used engineering alloys. Alloy 400 is also resistant to many forms of sulfuric and hydrochloric acids under reducing conditions.

Fabrication

  • Alloy 400 can be machined at satisfactory rates with machine tools generally employed by industry.  In general,  cold-drawn, stress-relieved material is recommended for best machinability and smoothest finish.

Weldability

  • Most of the conventional welding processes may be used to join alloy 400 to itself or dissimilar alloys. The choice of welding product is dependent upon the materials being joined and the environment to which they will be exposed.

 

 

 

Chemical Properties:

Ni+Co Cu C Mn Si S Fe
Alloy
400
63.0 min

min: 28
max: 34

.3 max

2.0
max

.5
max
.024 max

2.5 max

Mechanical Properties:

Grade Tensile Strength (ksi) min Yield Strength 0.2% offset (ksi) min Elongation (% in 50mm) min
Alloy
400

65

25

48

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
0.318 - 151 0.102

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