C64700 Nickel Silicon Bronze Alloy

C64700 nickel silicon bronze is a wrought alloy that has moderate strength and good corrosion resistance. Because it has a golden bronze color, it is an attractive option in a variety of applications.

Many industries use C64700, including aerospace, industrial, and railway. Common applications include:

  • Nickel Silicon Bronze Bearing Cages
  • Nickel Silicon Bronze Valve Guides & Valve Stems
  • Nickel Silicon Bronze Fasteners
  • Nickel Silicon Bronze Marine Fittings
  • Nickel Silicon Bronze Pole Line Hardware

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

Technical Details

C64700 is made up of 1.6-2.2% nickel, 0.4-0.8% silicon, 0.5% zinc, and 0.1% of both iron and lead. Copper makes up the balance of the alloy. The best welding techniques include:

  • Brazing
  • Butt
  • Coated-Shileded Arc
  • Gas-Shileded Arc
  • Seam
  • Spot

C64700 Nickel Silicon Bronze Alloy Properties

Physical
Property
Imperial
Metric
Density
0.323 lb/in
8.9 g/cm3
 
Mechanical
Property
Imperial
Metric
Rockwell B Hardness
94
94
Tensile strength
96000 psi
660 MPa
Yield strength
82,000 psi
560 MPa
Fracture strain
9%
9%
Machinability
30
30
Elastic modulus
17000 ksi
120 GPa
Poisson's ratio
0.34
0.34
 
Thermal
Property
Imperial
Metric
Thermal expansion coefficient (@20-300°C/68-572°F)
9.8 µin/in°F
17 µm/m°C
Thermal conductivity (@20.0°C/68°F)
120.0 BTU in/hr.ft².°F
210 W/mK