Alloy Names
UNS C75700
Applications
Uses include decorative items, jewelry, musical instrument valves and components, optical instrument components, fittings for food and dairy equipment, screws, rivets, and slide fasteners.
Characteristics
  • This is a sheet grade for general purpose applications where the additional strenght of half hard temper material imparts rigidity and spring properties.
  • The presence of nickel provides corrosion and tarnish resistance to levels well in excess of normal brasses.
  • NS104 is soldered and silver brazed without difficulty and is widely used for electrical and electronic components as well as for general engineering and aesthetic purposes.
Nominal Composition
Cu Ni Fe Mn Pb Zn
60.0 - 65.0 % 11.0 - 13.0 % 0.25 %Max 0.05 - 0.30 % 0.04 % Max Rem.

Properties

Ultimate Tensile strength (N/mm²) 530
0.2% Proof strength (N/mm²) 320
Elongation (%) 30
Hardness (HV) 140
 
Density (g/cm³) 8.65
Melting Range (°C) 1000 - 1060
Thermal conductivity (W/m°C) 33
Electrical Resistivity (μΩ.cm) 22
Electrical Conductivity (%IACS) 8
Magnetic Permeability 1.05 Max.
Modulus of Elasticity (N/mm²) 123,000
Joining Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding fair
Coated Metal Arc Welding
Not Recommended
Spot Weld good
Seam Weld fair
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed poor

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