C89844

Product description: Bismuth tin bronze
Solids: 1/2" to 10" O.D.
Tubes: 1 1/8" to 9" O.D.*
Rectangles: Up to 15"
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
Compliance: C89844 is compliant with key legislation including (1) Federal Safe Drinking Water Act - SDWA, (2) S. 3874 Federal Reduction of Lead in Drinking Water Act, (3) California AB1953, and (4) Vermont Act 193

*Consult mill for wall thickness

Typical uses

Plumbing: Fittings/valves for potable water

Chemical composition

Cu%	Pb%	Sn%	Zn%	Fe%	P%	Ni%1	Al%	Bi%	S%	Sb%	Si%
Chemical composition provided by CDA 1Ni value includes Co. Note: Cu + sum of named elements, 99.3% min. Single values represent maximums.
83.00- 86.00	0.20	3.00- 5.00	7.00- 10.00	0.30	0.05	1.00	0.005	2.00- 4.00	0.08	0.25	0.005

Machinability

Copper alloy UNS No.	Machinability rating	Density (lb/in3 at 68 °F)
C89844	70	0.31

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)	Remarks
ksi	MPa	ksi	MPa	%	typical BHN
28	193	13	90	5	55

Physical properties

	US Customary	Metric
Physical properties provided by CDA
Melting point - liquidus	1850 °F	1010 °C
Melting point - solidus	1550 °F	853 °C
Density	0.310 lb/in3 at 68 °F	8.58 gm/cm3 at 20 °C
Specific gravity	8.58	8.58
Electrical conductivity	16.8% IACS at 68 °F	0.095 MegaSiemens/cm at 20 °C
Thermal conductivity	46.7 Btu/sq ft/ft hr/°F at 68 °F	80.9 W/m at 20 °C
Coefficient of thermal expansion 68-392	10 · 10-6 per °F (68-392 °F)	17.3 · 10-6 per °C (20-200 °C)
Specific heat capacity	0.08 Btu/lb/°F at 68 °F	335.2 J/kg at 20 °C
Modulus of elasticity in tension	13000 ksi	89622 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*	Good
Oxyacetylene welding	Not recommended
Gas shielded arc welding	Not recommended
Coated metal arc welding	Not recommended
Machinability rating	70

Thermal properties

Treatment	Value*	Time**
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		0

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C89844

Lead-free Replacement for C844

Stocked alloy specs

Reference guide

Stocked size schedules

C89844

Typical uses

Chemical composition

Machinability

Mechanical properties

Physical properties

Fabrication properties

Thermal properties

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