Inoxyda

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 :

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 :