Nickel

Nickel Alloy 400

Specs: QQ-N-281, ASTM-B164, AMS 4675, ASME SB164
UNS# NO4400

Nickel 400 is a high-Nickel alloy consisting of at least 63% Nickel alloyed with Copper, some Iron, and other trace elements. This material is valued by many industries for its combination of high strength and corrosion resistance over a wide range of conditions and temperatures. Even when cooled to -423.17°F, Nickel Alloy 400 does not become brittle like many ferrous materials. Similarly, Nickel 400 retains many of its physical properties at high temperatures. While tensile strength lessened at temperatures over 700°F, yield strength and elongation are only marginally reduced.

 

Marine and chemical processing applications capitalize on the high corrosion resistance of this alloy and include piping systems, pump shafts, seawater valves, anchor cables, springs, heat exchangers, propeller shafts and fuel tanks.

Details

Nickel 400 is a solid solution alloy of Nickel and Copper (67% Ni, 23% Cu) which has outstanding corrosion resistance with extremely good mechanical properties even at cryogenic temperatures.

The alloy can be hardened by cold work, has good weldability, and has excellent corrosion resistance in rapid flowing brackish or seawater.

It is resistant to stress corrosion cracking which gives the alloy a wide range of potential applications in chemical and saltwater environments.

 

The alloy can be used in non-oxidizing chloride solutions and is resistant to de-aerated hydrochloric and hydrofluoric acids.

 

It is not recommended in oxidizing acids such as nitric and ammonia containing systems, due to the copper content of the alloy.

 

Nickel 400 can be used at elevated temperatures up to 1000ºF (538ºc) and has excellent mechanical properties down to -423 ºF (-253 ºc).

 

The alloy is approved for pressure vessels in accordance with the American ASME Boiler and Pressure Vessel code up to temperatures of 900 ºF (480 ºc) and to the German Pressure Vessel specification VdÜV –WBl.263 from 14-800 ºF (-10-425 ºc).

Available shapes –  round, hex, and rectangular

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Applications

  • Marine Engineering
  • Boiler feedwater heaters, heat exchangers, and steam generators in power plants
  • Crude petroleum distillation plants
  • Gasoline and freshwater tanks
  • Chemical and hydrocarbon processing equipment
  • Valve, shafts, fittings, fasteners, and pumps
  • Slash zone sheathing in offshore structures
  • Brine heaters and evaporators bodies in salt plants
  • Sulphuric and hydrofluoric acid alkylation plants
  • Cladding for crude oil distillation columns
  • Plants for uranium refining and isotope separation in the production of nuclear fuel
  • Pumps and valves in the manufacture of chlorinated hydrocarbons

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Specifications

Nickel 400 Specifications

International
Standards
Material
Designation
Tube & Pipe
Seamless
Sheet & Plate Strip Rod & Bar Wire Forgings
USA
ASTM
UNS
N04400
ASTM B 163
ASTM B 165
ASTM B 127 ASTM B 127 ASTM B 164 ASTM B 164 ASTM B 564
ASME N04400 ASME SB 163
ASME SB 165
ASME SB 127 ASME SB 127 ASME SB 164 ASME SB 164 ASME SB 564
QQ-N-281 N04400   Form 4
Form 6
Form 5 Form 1 Form 7 Form 2
Germany
Din

VdTÜV-Wbl

W-Nr 2.4360
NiCu30Fe
17743
263
17751
263
17750
263
17752
263
17753 17754
263
UK
BS
NA13 3074 3072 3073 3076 3075  
ISO NiCu30 6207 6208 6208 9723 9724 9725
Mechanical Properties

Mechanical Properties of Nickel 400

Product Form Condition UTS
N/mm²   Ksi
0.2% Yield
N/mm²   Ksi
Elong
%
Rod & Bar Annealed 517-620   75-90 172-345   25-50 35-60
Rod & Bar Cold Drawn
Stress Relieved
579-827    84-120 379-689    55-100 22-40
Plate Annealed 482-586    70-85 193-345   28-50 35-50
Sheet Annealed 482-586    70-85 207-310   30-45 35-40
Tube and Pipe
Seamless
Annealed 483-586    70-85 172-310   25-45 35-50
Physical Properties

Physical Properties of Nickel 400

Physical Properties Imperial Units Metric Units
Density 0.318lb/in³ 8.8g/cm³
Melting Range 2370-2400ºF 1300-1350ºc
Mean Liner Expansion 0-200ºc   15.2μm/m.ºc
Mean Liner Expansion 0-400 ºF 0.0086 in/in/ ºF x10³  
Specific Heat 0.102Btu/lb/ ºF 427J/kg ºc
Poisson’s Ratio 0.32 0.32
Curie Temperature 70-120 ºF 21-49 ºc
Thermal Conductivity 151Btu-in/hr/ft²/ ºF 22W/m. ºc
Electrical Resistivity 307ohm-circ mil/ft 0.511μΩ.m
Modulus of Elasticity 10³    
Tension 26ksi 179N/mm²
Compression 26ksi 179N/mm²
Torsion 9.5ksi 65N/mm²

While the data is believed to be accurate, Diversified Metals, Inc. makes no representation or warranty of any kind (expressed or implied) and assumes no responsibility with respect to the accuracy and values shown above; this information should only be used as a guide.

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