Brass Alloy C46400

General Characteristics
C46400, Naval Brass is a high strength and corrosion resistant alloy. It is widely used in marine construction where a strong, corrosive resistant and hard material is required. The addition of tin gives the alloy an inherent resistance to dezincification, thereby further inhibiting the impingement by seawater at higher than normal temperatures.
Typical Chemical Composition

Weight % Cu Pb Sn Fe Zn

Minimum 59.00 — 0.50 — Bal

Maximum 62.00 0.20 1.00 0.10

Weight %	Cu	Pb	Sn	Fe	Zn
Minimum	59.00	—	0.50	—	Bal
Maximum	62.00	0.20	1.00	0.10

Characteristics		English	Metric
Nominal density	20°C / 68°F	0.304 lbs/in³	8.41g/cm³
Melting range		1630-1650 °Fz	885-900 °C
Specific heat	20°C / 68°F	0.09 BTU/lb – °F	377 J/KG- °K
Thermal conductivity	20°C / 68°F	5.58 BTU/ft-hr-°F	9.65 W/m- °K
Average coefficient of thermal expansion From 20°C (68°F) to temperature,	300°C / 572°F	11.8 micro in/in- °F	21.2 micro m/m- °K
Electrical conductivity	20°C / 68°F Volume basis	26 %IACS
Electrical resistivity	20°C / 68°F	66.3 nΩ×m

Temper / Diameter (in.)		Tensile						Hardness	Shear
		Ultimate		Yield		Elongation in 50 mm (2 in.)	Reduction of area	HRB	Strength
		KSI	MPa	KSI	MPa	%	%		KSI	MPa
O50- light annealed	¼”	63	434	30	207	40	55	60	42	290
	1”	63	434	30	207	40
	2”	62	427	28	193	43
O60- soft annealed	¼”	58	400	27	186	45	60	56	40	275
	1”	57	393	25	172	47		55
	2”	56	386	25	172	47		55
H01- ¼hard	¼”	70	482	48	331	25	50	80	43	296
	1”	69	476	46	317	27		78
	2”	67	462	40	276	35		75
H02- ½hard	¼”	80	552	57	393	20	45	85	45	310
H02- ½hard	1”	75	517	53	365	20	45	82	44	303