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C89831

Lead-Free Replacement for C844

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Continuous Cast • GreenAlloys™

C89831, a C844 lead-free replacement alloy, supports the market demand for regulation-compliant lead-free material.

C89831 SPEC SHEET CONCAST LINE CARD

C89831

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 - SDWA, (2) S. 3874 Federal Reduction of Lead in Drinking Water Act, (3) California AB1953, and (4) Vermont Act 193

Typical Uses

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

Chemical Composition

Cu%1 Pb% Sn% Zn% Fe% P Ni%2 Al% Bi% S% Sb% Si%
Chemical Composition provided by CDA

10.01-2.0% 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    2Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
87.00-
91.00		  
0.10		 2.70-
3.70		 2.00-
4.00		  
0.30		  
0.05		  
1.00		  
0.005		 2.70-
3.70		  
0.08		  
0.25		  
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/in3 at 68 °F)
C89831 85 0.318

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  
29 200 13 90 5 55

Physical Properties

Physical Properties provided by CDA
  US Customary Metric
Melting Point - Liquidus 1893 °F 1033 °C
Melting Point - Solidus 1518 °F 825 °C
Density 0.318 lb/in3 at 68 °F 8.81 gm/cm3 at 20 °C
Specific Gravity 8.81 8.81
Electrical Conductivity 20.38% IACS at 68 °F 0.117 MegaSiemens/cm at 20 °C
Thermal Conductivity 50 Btu/sq ft/ft hr/°F at 68 °F 86.6 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 0.092 Btu/lb/°F at 68 °F 385.4 J/kg at 20 °C
Modulus of Elasticity in Tension 13700 ksi 94458 MPa

Fabrication Properties

Fabrication Properties provided by CDA
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Poor
Machinability Rating 85

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