Cupral 4M Aluminum Bronze
Cupral 4M (CuAl10Ni5Fe4)
Nickel Aluminium Bronze
Special aluminium bronze used where higher mechanical properties at elevated temperatures together with corrosion-resistant properties are demanded.
It is used vvhere higher mechanical properties at elevated temperatures together with corrosion-resistant properties are demanded.
Cupral 4M Nickel Aluminium Bronze
Area of Application
Bending dies (shoes, wiper dies and mandrels) for the tube bending industry,
Wear and guide plates,
Aircraft landing gear bearings and bushings,
Gear wheels.
Chemical Composition and Material Number
Code: GAM MM11, GAM MM13, CA104, AMS 4590, NF A51-116, NFL 14705, C95500, C93500, C63020, 2.0975, 2.0966, 2.0971, UA10N, CW307G, CW304G, BSB23, DTD197A, CuAl10Ni5Fe4, CuAl10Ni5Fe3, CuAl11Fe4Ni4, CuAl8Ni5Fe4Mn, CuAl10Ni3Fe2 CuAl9Ni5Fe4, CuAl9Ni5Fe2.
Aluminium |
Iron |
Nickle |
Manganese |
Other |
Copper |
Al |
Fe |
Ni |
Mn |
MAX |
Cu |
8.5 - 11 |
3 - 5 |
4 - 6 |
Max. 1 |
0.5 |
Remaining |
Heat Treatment: Not necessary. If there is intensive machining, 4 hours stress relieving at 380°C is recommended.
Mechanical Properties
Hardness |
170 - 220 |
HB |
Tensile Strength |
650 - 800 |
N/mm2 |
Yield Strength |
270 - 400 |
N/mm2 |
Moduls of Elasticity (20°C) |
124 |
GPa |
Elogation L=5D |
10 - 16 |
% |
Compressive Strength |
1200 |
N/mm2 |
Physical Properties
Electrical Conductivity |
5 |
MS/m |
Thermal Expansion Coefficient |
16 |
1/K * 10-6 |
Thermal Conductivity (20°C) |
42 |
W/mK |
Density |
7.45 |
g/cm3 |
Special Information
Continuous cast products of rods, sand castings, centrifugal casting, forging and casting products according to the picture.
