C6802

DESCRIPTION

Bismuth Bronze is a copper alloy which typically contains 1-3% bismuth by weight. It is being marketed as a green alternative to leaded brass/bronze bearings and bushings as pressure for the substitution of hazardous metals has increased.

This alloy is very corrosion-resistant, a property which makes it suitable for use in environments such as the ocean. Bismuth Bronzees are more malleable, thermally conductive and polish better than regular brasses.

CHEMICAL COMPOSITION

Elements Min (%) Max (%)
Cu 57.00 64.00
Bi0.504.00
Sn0.103.00
P-0.20
Pb0.010.10
Fe-0.70
Cd-0.0075
Zn Remainder

Mechanical Properties: JIS H3250: 2015 (As Per Temper BD)

Range (mm) From To UTS Min (N/mm2) PS Min Elongation   Min (%) Hardness Min (HV) Hardness Max
Round (Dia)1.575315-575-
Hex (A/F) 3 70 315 - 5 75 -
Square (A/F) 3 65 315 - 5 75 -
Rectangle 3 50 315 - 5 75 -
Physical Properties
Melting Point - Liquidus1650º F
Solidus1630º F
Density0.304 lb/in3 at 68º F Specific
Gravity8.41Electrical
Conductivity26% IACS @68º F Thermal
Expansion11.8 -10 -6 per ºF (68-572º F) Modulus of Elasticity
Fabrication Properties
Machinability Closest machinability to the traditional material with lead in all aspects including machining resistance, shape of chips and tool life etc.
Capability of being cold workGood
Capability of being Hot workGood

TYPICAL USES

  • Suitable for Environment Purpose of Brass with Excellent Machinability.
  • Plumbing
  • Computer
  • Electronic Clock
  • Rivet Nut Gear
  • Medical Valve
  • Camera Parts
  • Hardware Parts