C90700 Tin Bronze Alloy

When durability and strength matter, you need C90700, a cast tin-bronze alloy. It is a strong, durable alloy that resists corrosion, particularly with saltwater.

Able to withstand low speeds and high loads, people have used C90700 in moveable bridges. Some manufacturers have used it for restaurant equipment because of the attractive copper color. Other applications include:

  • Bronze Bearings
  • Bronze Gearboxes
  • Bronze Gears
  • Bronze Restaurant Equipment
  • Bronze Speed Reducers
  • Bronze Valve Bodies
  • Bronze Worm Gears
  • Bronze Worm Wheels

Diversified Bronze has solid and cored bronze bars in 144" lengths. Other lengths and non-standard sizes are available.

Technical details

C90700 is made up of 89% copper and 11% tin. The best welding techniques include:

  • Brazing
  • Carbon Arc
  • Coated-metal arc
  • Gas-shielded arc
  • Oxyacetylene
  • Soldering

C90700 Tin Bronze Alloy Properties

Physical
Property
Imperial
Metric
Density
0.317 lb/in
8.77 g/cm3
 
Mechanical
Property
Imperial
Metric
Brinell Hardness
80
80
Tensile strength
44200 psi
305 MPa
Yield strength
21800 psi
150 MPa
Fracture strain
25%
25%
Machinability
20
20
Elastic modulus
16969 ksi
117 GPa
Poisson's ratio
0.34
0.34
 
Thermal
Property
Imperial
Metric
Thermal expansion coefficient (@20-200°C/68-392°F)
10.0 µin/in°F
18.0 µm/m°C
Thermal conductivity (@20.0°C/68°F)
493 BTUin/hr.ft².°F
71.0 W/mK