Equivalent Specifications
DIN 2.1504
14Ni3Al1Fe
CuNi14Al3Fe1
NF L14-702 CuNi14Al2
UN14A2
Key Features
A high strength hybrid alloy which exhibits
the corrosion resistance of cupro nickel
combined with the high strength of aluminium bronze.
Can be precipitation hardened to achieve tensile properties close to those of beryllium copper.
Typical Uses
Marine:
The excellent corrosion resistance of this alloy and non-susceptibility to hydrogen embrittlement,
combined with high strength makes it an ideal
material for marine fasteners.
It is also used for lead
connectors and stab plates. The alloy is utilised in many Naval Marine applications such as winches,
actuator values, sea water valves and general
engineering.
Aerospace:
The alloy is also used in aerospace for
landing gear bushes and sleeves which utilizes the
excellent wear resistance.
Automotive:
It can be used in high
performance automotive applications for valve guides and valve seats.
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DTD 900/4805
DTD 900/4805 is UK Ministry of Defence specification for CuNi15Al3 used primarily in highly stressed aerospace applications. It has exceptional high mechanical strength, coupled with excellent wear and fatigue strength. The alloy has good corrosion resistance and meets the requirements of WL 2.1504 and Elite CAL T- 1000.
Description |
Cupro Nickel |
Nominal Composition |
CuNi15Al3 |
Alloy Type |
Wrought |
Typical Mechanical Properties
Tensile Strength (N/mm²) |
1000 |
Proof/Yield Strength (N/mm²) |
750 |
Elongation (%) |
12 |
Hardness Brinell |
250 |
Impact Izod J20°C |
10 |
Typical Physical Properties
Density g/cm³ |
8.7 |
Melting Temperature Range °C |
1120-1200 |
Thermal Conductivity W/mK |
30 |
Electrical Resistivity μΩ.m15°C |
18 |
Coefficient of Thermal Expansion 0-250°C |
16.5 |
Relative Magnetic Permeability |
< 1.01 |
Coefficient of Friction |
0.23 |