Aluminium bronze billets & plates

PLATES AND BARS

Aluminium bronze are a family of copper based alloys including nickel, aluminium and iron which gives both a good corrosion resistance , in particular in sea water, and good mechanical properties.

NAB alloys are mainly used in sand casting for large size complexes and engineered components. Copper based alloys can also available in different elaboration standards such as :

Plates and bars


Continuous casting is a process to get straight bars either to directly machine components in aluminium bronze or to forge them . Our capabilities enable us to deliver rough machined continuous casted aluminium bronze billets in various alloys and sizes :

Diam
in mm
140 160 205 225 255 285 335 405
L max
in mm
2400 2400 2400 1800 1800 1700 1400 1000
Weight
in kg
282 368 605 547 702 828 942 985

The main international standards for continuous castings are :

  • EN 1982 (such as CuAl10Fe5Ni5-GC)
  • ASTM B 505 (such as C95800)

And like for sand casting, other specific grades are available to meet certain requirements such as Inoxyda 154 to reach high mechanical properties or Inoxyda 53AMA for low magnetic aluminium bronze.

Plates are mainly used for welded construction and are available according to different standards :

Grade Inoxyda 90 ASTM B171 C63000 EN 1653 CuAl10Ni5Fe4
ou CW307G
Thickness 4 à 25 mm
Standard Dimensions 1 000 x 2 000 mm
Other requirements on request

For all those applications, Inoxyda is also able to provide corresponding welding rods.

Forging aluminium bronze requires experience which Inoxyda has gained over the years , in particular on Navy applications. NAB alloys being rarely used in that configuration, reference documents are scarce but the following are regularly used :

Navy Specifications
(type GAMM MM11, STF , DEF STAN 02-833)
International Standards
( EN 12 420, ASTM B124)

Centrifugal casting of aluminium bronze alloys is a process which comes in addition to the more standard sand casting which is mainly available for hollow revolution parts, including in large dimensions :

Vertical Spining Horizontal Spining
Outside Diameter from 225 to 6 000 mm from 60 to 1 000 mm
Length from 50 to 3 600 mm from 100 to 5 000 mm
Weight from 50 to 20 000 kg from 5 to 6 000 kg

The main standards used as reference for centrifugal casting of aluminium bronze alloys are :

  • ASTM B271 in which several different alloys are available
  • EN 1982 in which the same alloys as for sand casting are available

Those different manufacturing processes enable aluminium bronze alloys to be available for a wide variety of applications where resistance to corrosion, in particular sea water corrosion, is a main design criteria among which :

  • Valves
  • Pumps and turbines
  • Heat Exchangers
  • Ship building propulsion

More information is available on this technology and its application at :

Centrifugation - LBI

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