C89831 – Lead-Free Replacement for C844

Manufacturer of Custom Machined Parts

Cast C89831

C89831 is a C844 lead-free replacement alloy. C89831 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: C89831 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

INDUSTRIAL: corrosion-resistant/pressure-tight castings, high-speed/heavy-pressure bearings, impellers, pumps

Chemical Composition

Cu%1Pb%Sn%Zn%Fe%P%Ni%2Al%Bi%S%Sb%Si%
87.00-91.000.102.70-3.702.00-4.000.300.051.000.0052.70-3.700.080.250.005

1 .01-2.0% as any single or combination of Ce La or other rare earth(x) elements as agreed upon. (x)ASM International definition: one of the group of chemically similar metals with atomic numbers 57 through 71 commonly referred to as lanthanides. 2 Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.

Machinability

Copper Alloy UNS No.Machinability RatingDensity (lb / in³ at 68°F)
C89831850.318

Mechanical Properties

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, in 2 in. or 50 mm minBrinell Hardness (500 kg load)Remarks
ksiMPaksiMPa%typical BHN
292001390555

Physical Properties

 US CustomaryMetric
Melting Point - Liquidus1893 °F 1033 °C
Melting Point - Solidus1518 °F 825 °C
Density0.318 lb/in³ at 68 °F38.81 gm/cm³ at 20 °C
Specific Gravity8.818.81
Electrical Conductivity20.38% IACS at 68 °F 0.117 MegaSiemens/cm at 20 °C
Thermal Conductivity50 Btu/sq ft/ft hr/°F at 68 °F 86.6 W/m at 20 °C
Coefficient of Thermal Expansion 68-39210 · 10-6 per °F (68-392 °F)17.3 · 10-6 per °C (20-200 °C)
Specific Heat Capacity0.092 Btu/lb/°F at 68 °F385.4 J/kg at 20 °C
Modulus of Elastic in Tension13700 ksi94458 MPa

Fabrication Properties

TechniqueSuitability
SolderingExcellent
BrazingGood
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingNot Recommended
Coated Metal Arc WeldingPoor
Machinability Rating85

Fabrication Properties provided by CDA

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