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Complex aluminium bronzes.
Excellent for demanding applications; their mechanical properties
are similar to those of quality steels and they are provided with excellent
wear resistance, high corrosion resistance, remarkable hardness,
low magnetic permeability, softening and oxidation resistance
at high temperatures. All these are forgeable and susceptible to thermal
treatment.
Achieved according to the regulations of the table UNI 4855 "Casting
copper alloys as ingots and castings - Generalities and tests"
VALUES REFERRED TO FORGES PIECES
| Designation |
Composition |
Unitary ultimate tensile
stress
R
[kgf/mm2] |
Elongation
A
[%] |
Brinell hardness
HB
[kgf/mm2] |
Supply |
DURAN A
DURAN B
DURAN G |
Cu/Al/Fe
Cu/Al/Fe/Ni
Cu/Al/Fe/Ni/Mn |
50÷65
60÷75
75÷90 |
10÷20
5÷15
8÷20 |
140÷160
170÷200
200÷250 |
Sand cast
Chill cast
Forged |
 
The trademarks of bronzes "CM" "DURAN" "MAC"
assure the unchangingness of mechanical and metallurgical characteristics
in the castings we produce.
DURAN A - DURAN B - DURAN G
Wheels and elicoidal ring gears; pinions; saddles; nut screws; pressure
ring gears and sliding blocks for rolling mill adapters; wearing plates;
gibs; bushes for toggles; spherical sites; connecting rods; bodies and
impellers for pumps; parts for the chemical, petrochemical and ship-industry,
chains and pickling hooks.
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