Lead Free Brass C89833 Sand Castings
Alloy C89833, Lead Free Red Brass, has 87% Copper 5% Tin 3% Zinc and 2% Bismuth. It contains virtually no Selenium but does utilize Bismuth as a Lead substitute. This alloy has been recognized as an acceptable material for California Prop 65. It has good machinability, polishing and plating characteristics. It is suitable for being joined by soldering (excellent) and brazing (good).
Typical applications for sand casting alloy C89833 are water meters, valves, pump components, pipe fittings, plumbing goods, water pump impellers, housings and small gears.
opper-bismuth UNS C89833 has a copper content of not less than 86%.
The following table shows the mechanical properties of UNS C89833 sand cast alloy as a function of heat treatment.
| Temper | Tensile Str. | Yield Str. | Elong. |
|---|---|---|---|
| M01 | 258MPa (37ksi) | 119MPa (17ksi) | 28% |
The chemical composition of UNS C89833 copper alloy is outlined in the following table.
C89833 Product description: Bismuth tin bronze
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: C89833 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, (4) Vermont Act 193, and is NSF/ANSI/CAN 61-2022 compliant*Consult mill for wall thickness
Typical uses
Industrial: corrosion-resistant/pressure-tight castings, impellers, pumps
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. | |||||||||||
| 86.00- 91.00 | 0.09 | 4.00- 6.00 | 2.00- 6.00 | 0.30 | 0.05 | 1.00 | 0.005 | 1.70- 2.70 | 0.08 | 0.25 | 0.005 |
Machinability
| Copper alloy UNS No. | Machinability rating | Density (lb/in3 at 68 °F) |
|---|---|---|
| C89833 | 81 | 0.317 |
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 | |
| 30 | 207 | 14 | 97 | 6 | 60 | |
Physical properties
Physical properties provided by CDA | |||||||||||
| US Customary | Metric | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Melting point – liquidus | 1877 °F | 1025 °C | |||||||||
| Melting point – solidus | 1454 °F | 790 °C | |||||||||
| Density | 0.317 lb/in3 at 68 °F | 8.78 gm/cm3 at 20 °C | |||||||||
| Specific gravity | 8.78 | 8.78 | |||||||||
| Electrical conductivity | 17.8% IACS at 68 °F | 0.103 MegaSiemens/cm at 20 °C | |||||||||
| Thermal conductivity | 41 Btu/sq ft/ft hr/°F at 68 °F | 71 W/m at 20 °C | |||||||||
| Coefficient of thermal expansion 68-392 | 13 · 10-6 per °F (68-392 °F) | 22.5 · 10-6 per °C (20-200 °C) | |||||||||
| Specific heat capacity | 0.085 Btu/lb/°F at 68 °F | 356.1 J/kg at 20 °C | |||||||||
| Modulus of elasticity in tension | 15500 ksi | 106869 MPa | |||||||||
C89833 Abstract
Fabrication properties
Fabrication properties provided by CDA |
