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Tin - lead - zinc and nickel bronzes
Lead bronzes - lead and nickel bronzes
Tin bronzes
Tin and nickel bronzes
Manganese bronzes
Aluminium bronzes
Extremely hard aluminium bronzes
Electrolytic copper and low-alloyed copper

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Aluminium bronzes

Metallurgic properties
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.

Mechanical characteristics
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

All these alloy are not antifriction and thus have to be used with forced lubrification or with non-continuous strength.All these alloys are forgeable

Typical application
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.

   
   

Fonderia Macchi Carlo s.a.s.
Via E. Cosenz, 11 - 20157 Milano
Tel. 02 393 117 34 / 02 393 101 36 - Fax 02 393 117 34
E-mail: info@fonderiamacchi.com - Sito: www.fonderiamacchi.com
P.iva: 00544630155