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Nickel 400

Special Nickel-Copper
NiCu30

Nickel 400 is a single phase nickel-copper alloy, with high strength and very good corrosion resitance in salt and brackish waters. The alloy can also be cold worked to increase the mechancical properties.

Its ability to maintain properties at sub zero and elivated temperatures up to 450°C (842°F) providing it does not come into contact with sulphur bearing gases above 371°C (700°F), enables it to be used in a wide spectrum of applications.

The alloy performs well in reducing acids such as sulphuric and hydrochloric providing there is no aeration or other oxidising media present.

Nickel 400 shows high strength and excellent corrosion resistance in a range of acidic and alkaline environments and it's especially suitable for reducing conditions. It also has good ductility and thermal conductivity. Alloy 400 typically finds application in marine engineering, chemical and hydro-carbon processing, heat exchangers, valves and pumps.

Nickel 400 is covered by the following standard designations: BS 3075, 3076 NA 13, DTD 204B and ASTM B164.

Composition

Element	Ni	Cu	Fe	Mn	Si	C	S
%	Bal	28.0-34.0	2.5max	2.0 max	0.5 max	0.3max	0.024max

Typical Mechanical Properties

Form	Size Range Imperial Metric	Yield 0.2% Ksi MPa	Yield 0.2% Ksi MPa	UTS Ksi MPa	Elong %
Forgings	All sizes	31.9-46.4	36.3-50.7	75.4-89.9	35-45
*		220-320	250-350	520-620

Manufacturing Ranges

With very little limitation on size, Nickel 400 is available as standard in rod, bar, blocks, rings, tubes and discs up to a piece weight of 4,500kg/9,900lbs.

Copper Alloys is also regularly making customised shaped forgings and can increase piece weight up to 20,000kg/44,000lbs.

Copper Alloys Ltd also offers finished machined components in all alloys, complete project management and tailored mechanical properties beyond those of the specification to meet special requirements.

All information is supplied for guidance only and gives no guarantee for end applications

Typical Physical Properties

(Courtesy Def Stan 02-879)

	Metric	Imperial
Density	8830 kg/m³ @ 20ºC	0.318lb/in³ @ 68º F
Specific Gravity	8.83
Specific Heat	419j/kg ºC @20 ºC	0.10 Btu/lb º F @68º F
Electrical Conductivity	1.7-2 m/Ωmm² @20 ºC	3-3.5% IACS @ 68º F
Thermal Conductivity	0.218W/cm/ ºC @20 ºC	112.58Btu/ft²/fthr/ º F) @68º F
Thermal Expansion	17 x10ˉ 6 /ºC (20-300 ºC)	9.0 x10ˉ 6 / º F (68-572 º F)
Electrical Resistivity	51 µ Ωcm@20 ºC	307 Ωcmil/ft @ 68º F
Relative Magnetic Permeability	<1.001
Curie temperature	21-49 ºC	70-120 º F
Machining Index	15 (Based on free machining brass 100%)
Modulus of Rigidity ( annealed)	179.26 GPa @20 ºC	26000 ksi@68 º F
Modulus of Elasticity ( annealed) (In Tension)	179.26 GPa @20 ºC	26000 ksi@68 º F
Shear Strength (forgings)	331 MPa	48ksi
Fatigue ( annealed)	234 MPa @ 1x108	34ksi @1x108
Melting Range	1300-1350 ºC	2370-2460 ºF
Hot Working	800-925 ºC	1470-1695 ºF
Cold Working	Fair	Fair
Cryogenic	Retains properties down to – 452 ºF (-269 ºC)
Elevated Temperatures	Retains properties to 570 ºF (300 ºC)

Joining

Recommended Welding Processes

1. Tungsten inert gas (TIG) or gas tungsten arc(GTAW)
2. Metal inert gas (MIG) or gas metal arc (GMAW)
3. Manual arc (MMA) (MMAW)
4. Shielded metal arc (SMAW)
5. Laser welding
6. Soldering and brazing is possible
7. Friction welding

Procurement Recommendations

1. Buy components direct from the material manufacturer – where possible, due to the specialist nature of this alloy, it is normally lower risk and much more cost effective to buy finished components from the mill.
2. Project management is available for full ranges of kit and components. Harnessing the Copper Alloys quality management system guarantees delivery on-time and in full.
3. Tailored and customised properties (physical and mechanical) beyond those of the material specification to enhance performance.