Alloy 400 (UNS N04400) is a solid-solution Nickel/Copper alloy that can be hardened only by cold working. It has reasonable strength and toughness over a wide temperature range and excellent resistance to many corrosive environments.
Alloy 400 is widely used in many fields, especially marine and chemical processing. Typical applications are valves and pumps; pump and propeller shafts; marine fixtures and fasteners; electrical and electronic components; springs; chemical processing equipment; gasoline and fresh water tanks; crude petroleum stills, process vessels and piping; boiler feedwater heaters and other heat exchangers; and deaerating heaters.
Available Tube Product form
Typical Applications
Industries predominantly using this Grade
Typical Manufacturing Specifications
- ASTM B163
-
ASTM B165
-
AMS 4574
-
BS3074
Technical Data
Mechanical Properties
|
Temper |
Annealed |
|
Tensile Rm |
70 |
ksi (min) |
|
Tensile Rm |
480 |
MPa (min) |
|
R.p. 0.2% Yield |
28 |
ksi (min) |
|
R.p. 0.2% Yield |
195 |
MPa (min) |
|
Elongation (2” or 4D gl) |
40 |
% (min) |
Physical Properties (Room Temperature)
|
Specific Heat (0-100°C) |
427 |
J.kg-1.°K-1 |
|
Thermal Conductivity |
21.8 |
W.m -1.°K-1 |
|
Thermal Expansion |
13.9 |
μm/μm/°C |
|
Modulus Elasticity |
173 |
GPa |
|
Electrical Resistivity |
5.47 |
Ohm-cm |
|
Density |
8.83 |
g/cm3 |
Chemical Composition (% by weight)
|
Element |
Min |
Max |
|
C |
- |
0.3 |
|
Si |
- |
0.5 |
|
Mn |
- |
2 |
|
S |
- |
0.24 |
|
Cu |
Balance |
|
Fe |
- |
2.5 |
|
Ni |
63 |
70 |