Alloys

CDA464 (C46400)	Naval brass, uninhibited				CDA464 standards and properties
CDA485 (C48500)	Naval brass, high leaded				CDA485 standards and properties
CDA486 (C48600)	Naval brass, arsenical				CDA486 standards and properties


Naval Brasses are nominally composed of 60% copper, 39.2% zinc and 0.8% tin. As are typical of brass alloys with the duplex
alpha + beta structure, naval brasses have good strength and rigidity. By substituting tin for an equal quantity of zinc, a high corrosion
resistance to seawater is achieved. The addition of tin also gives the alloys an inherent resistance to dezincification, thereby further
inhibiting the impingement by seawater at higher than normal temperatures. The alloys are also noted for its resistance to wear, fatigue,
galling, and stress corrosion cracking.

CDA464 (C46400) Naval brass, uninhibited is used for welding rod, bearings, bushes, propeller shafts, plumbing fittings, marine hardware,
heat exchanger tubes and various other uses. It possesses excellent forgeability.


CDA485 (C48500) Naval brass, high leaded is used for seawater valve stems, light bearings, fasteners, screw machine parts and various
other uses. It possesses excellent forgeability.

CDA486 (C48600) Naval brass, arsenical has an addition of arsenic to further enhance its dezincification resistance.

	CDA464 (C46400) Naval brass, uninhibited
		Cu	Fe	Pb	Sn	Zn
	Min./Max.	59.0-62.0	0.1	0.2	.50-1.0	Rem.

	CDA485 (C48500) Naval brass, high leaded
		Cu	Fe	Pb	Sn	Zn
	Min./Max.	59.0-62.0	0.1	1.3-2.2	.50-1.0	Rem.

	CDA486 (C48600) Naval brass, arsenical
		Cu	As	Pb	Sn	Zn
	Min./Max.	59.0-62.0	.02-.25	1.0-2.5	.30-1.5	Rem.