C94700

Product description Nickel-tin bronze
Solids: 1/2" to 10" O.D.
Tubes: 1" to 16" O.D.*
Rectangles: Up to 20"
Standard lengths: 144"
Shape/Form: Semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar

*Consult mill for wall thickness

Typical uses

Electrical: Circuit breaker parts
Industrial: Bearings, feeding mechanisms, gears, nozzles, piston cylinders, shift forks, valve components, wear guides

Note: Also available in heat-treated condition.

Similar or equivalent specification

CDA	ASTM	SAE	AMS	Federal	Military	Other
C94700	B505 B505M B947 B292-A	J461 J462		QQ-C-390, F2		Cast Nickel-tin bronze

Chemical composition

Cu%	Pb%1	Sn%	Zn%	Fe%	P%	Ni%2	Al%	Mn%	S%	Sb%	Si%
Chemical composition according to ASTM B505/B505M-23 1It is possible that the mechanical requirements of Copper alloy UNS No. C94700 in the heat-treated condition will not be attained if the lead content exceeds 0.01%. 2Ni value includes Co. Note: Cu + sum of named elements, 98.7% min. Single values represent maximums.
85.00- 90.00	0.09	4.50- 6.00	1.00- 2.50	0.25	0.05	4.50- 6.00	0.005	0.20	0.05	0.15	0.005

Machinability

Copper alloy UNS No.	Machinability rating	Density (lb/in3 at 68 °F)
C94700	30	0.32

Mechanical properties

Tensile strength, min		Yield strength, at 0.5% extension under load, min		Elongation, in 2 in. or 50 mm min	Brinell hardness (500 kg load)
Mechanical properties according to ASTM B505/B505M-23
ksi	MPa	ksi	MPa	%	typical BHN
45	310	20	138	25	85

Physical properties

	US Customary	Metric
Physical properties provided by CDA
Melting point - liquidus	1880 °F	1027 °C
Melting point - solidus	1660 °F	904 °C
Density	0.32 lb/in3 at 68 °F	8.86 gm/cm3 at 20 °C
Specific gravity	8.86	8.86
Electrical conductivity	12% IACS at 68 °F	0.07 MegaSiemens/cm at 20 °C
Thermal conductivity	31.2 Btu/sq ft/ft hr/°F at 68 °F	54 W/m at 20 °C
Coefficient of thermal expansion 68-392	10.9 ·10-6 per °F (68-392 °F)	18.8 ·10-6 per °C (20-200 °C)
Specific heat capacity	0.09 Btu/lb/°F at 68 °F	377.1 J/kg at 20 °C
Modulus of elasticity in tension	15000 ksi	103400 MPa

Fabrication properties

Technique	Suitability
Fabrication properties provided by CDA *Since brazing is performed within the hot-short range, strain must be avoided during brazing and cooling.
Soldering	Excellent
Brazing*	Excellent
Oxyacetylene welding	Fair
Gas shielded arc welding	Good
Coated metal arc welding	Good
Machinability rating	30

Thermal properties

Treatment	Min*	Max*	Value*	Time**	Medium
Thermal properties provided by CDA Temperature is measured in fahrenheit. *For stress relief, solution treatment and annealing - time is measured in hours/inch of thickness. For precipitation heat treatment - time is measured in hours.
Stress relief			500
Solution treatment	1425	1475		2	Water
Precipitation treatment			580	5	Air

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C94700

Stocked alloy specs

Reference guide

Stocked size schedules

C94700

Typical uses

Similar or equivalent specification

Chemical composition

Machinability

Mechanical properties

Physical properties

Fabrication properties

Thermal properties

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