Cast C89844
C89844 is a C844 lead-free replacement alloy. C89844 supports the market demand for lead-free material and compliance with the 3874 Reduction of Lead in Drinking Water Act (effective January 2014).
Information
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 1974 - SDWA, (2) Federal Reduction of Lead in Drinking Water Act 2011 and (3) California AB1953
Typical Uses
PLUMBING: fittings/valves for potable water
Chemical Composition
Cu% | Pb% | Sn% | Zn% | Fe% | P% | Ni%1 | Al% | Bi% | S% | Sb% | Si% |
---|---|---|---|---|---|---|---|---|---|---|---|
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 |
¹Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.3% min. Single values represent maximums.
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 | |
---|---|---|
Melting Point - Liquidus | 1850 °F | 1010 °C |
Melting Point - Solidus | 1550 ° | 853 °C |
Density | 0.310 lb/in³ at 68 °F3 | 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 Elastic in Tension | 13000 ksi | 89622 MPa |
Fabrication Properties
Technique | Suitability |
---|---|
Soldering | Excellent |
Brazing* | Good |
Oxyacetylene Welding | Not Recommended |
Gas Shielded Arc Welding | Not Recommended |
Coated Metal Arc Welding | Not Recommended |
Machinability Rating | 70 |
Fabrication Properties provided by CDA
*Since brazing is performed withing the hot-short range, strain must be avoided during brazing and cooling.
Thermal Properties
Treatment | Value* | Time** |
---|---|---|
Stress Relief | 500 | |
Solution Treatment | 0 |
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.