C46400 Naval Brass Plate

Brass is a 60:40 copper zinc alloy to which about 1% of tin has been added to improve the corrosion resistance, particularly to dezincification. The allov is a two phase alpha-beta brass. hence has reasonablv high strength with lower ductility than the singlephase 70:30 or alpha brass. lt is used for structural applications and for forgings, especially where contact with sea water is likelto induce corrosion. The mechanical properties are almost indistinguishable from those of 60:40 brass C28000, although the tin addition tends to give slightly higher strength. C46400 can be readily hot worked, and can also be cold worked, but not as easily asthe single phase alpha brasses.

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Product Description

DESCRIPTION

CHEMICAL COMPOSITION

Elements	Min(%)	Max(%)
Cu	59.00	62.00
Pb	-	0.20
Sn	0.50	1.00
Fe	-	0.10
Total Others	-	0.50
Zn	Remainder

MECHANICAL PROPERTIES ACCORDING TO ASTM B371 (AS PER TEMPER HO2)

Range(Inch)	From	To	UTS Min (ksi)	PS Min(ksì)	Elongation Min(%)	Hardness Min(HRB)	Hardness Max(HRB)
Round(Dia)	0.059	0.500	60	27	22
	0.500	1.000	60	27	25	60	80
	1.000	2.000	58	26	25	55	80
	2.000	2.953	54	25	25	55	80
Hex(A/F)	0.118	0.500	60	27	22
	0.500	1.000	60	27	25	60	80
	1.000	2.000	58	26	25	55	80
	2.000	2.756	54	25	25	55	80
Square (A/F)	0.118	0.500	60	27	22
	0.500	1.000	60	27	25	60	80
	1.000	2.362	58	26	25	55	80
Rectangle (Thickness)	0.1181	0.500	60	27	22
	0.500	1.000	60	27	25	60	80
	1.000	1.968	58	26	25	55	80

Range(mm)	From	To	UTS Min(MPa)	PS Min(MPa)	Elongation Min(%)	Hardness Min (HRB)	Hardness Max(HRB)
Round (Dia)	3	12	415	185	22
	12	25	415	185	25	60	80
	25	50	400	180	25	55	80
	50	75	370	170	25	55	80
Hex(A/F)	3	12	415	185	22
	12	25	415	185	25	60	80
	25	50	400	180	25	55	80
	50	70	370	170	25	55	80
Square (A/F)	3	12	415	185	22
	12	25	415	185	25	60	80
	25	50	400	180	25	55	80
	50	60	370	170	25	55	80
Rectangle (Thickness)	3	12	415	185	22
	12	25	415	185	25	60	80
	25	50	400	180	25	55	80

PHYSICAL PROPERTIES
Melting Point -Liquidus°F	1650
Melting Point -Solidus°F	1630
Density lb/cu in.at 68°F	0.304
Specific Gravity	8.41
Electrical Conductivity %IACS at 68°F	26
Thermal Conductivity Btu/ sq ft/ft hr/°F at 68°F	67
Coefficient of Thermal Expansion 68-57210-6 per°F(68-572°	11.8
Specific Heat Capacity Btu/lb /°F at 68°F	0.09
Modulus of Elasticity in Tension ksi	15000
Modulus of Rigidity ksi	5600

FABRICATION PROPERTIES
Technique	Suitability
Soldering	Excellent
Brazing	Excellent
Oxyacetylene Welding	Good
Gas shielded Are Welding	Fair
Coated Metal Are Welding	Not Recommended
Spot Weld	Good
Seam Weld	Fair
Butt Weld	Good
Capacity for Being Cold Worked	Fair
Capacity for Being Hot Formed	Excellent
Forgeability Rating	90
Machinability Rating	30