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Legislation Top 10 Reasons to Use Green Alloys™
Standard-Stocked Alloys

C89831 Lead-Free Replacement for C844

  • Product Description: Bismuth Tin Bronze
  • Solids: 1/2"  to 10" OD
  • Tubes: 1 1/8" to 9" OD
  • Rectangles: Up to 15" wide
  • 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 &mdash SDWA, (2) Federal Reduction of Lead in Drinking Water Act 2011 and (3) California AB1953
  • » C89831 Spec Sheet (.pdf)

Typical Uses

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

Chemical Composition

Cu% Sn% Pb% Zn% Fe% Ni%1 Sb% P% S% Al% Si% Bi%
  • 1Ni value includes Co.
  • Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
87.00-
91.00
2.70-
3.70
 
0.10
2.00-
4.00
 
0.30
 
1.00
 
0.25
 
0.05
 
0.08
 
0.005
 
0.005
2.70-
3.70

Machinability

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

Mechanical Properties

Tensile Strength, min Yield Strength, at .5% extension under load min Elongation, in 2 in. or 50 mm min Brinell Hardness Remarks
ksi MPa ksi MPa % typical BHN  
29 200 13 90 5 55 (500 kg)  

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 · ft/(hr · ft2 · °F) at 68° F 86.6 W/m at 20° C
Coefficient of Thermal Expansion 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 293° C
Modulas of Elasticity in Tension 13700 ksi 94458 MPa