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C18000 Copper Chromium Nickel Silicon

Spec Equivalents: RWMA Class III

The C18000 Copper Chromium Nickel Silicon is the copper base alloy which is heat treatable, high in strength and conductivity. The properties of this alloy can fairly be obtained after its heat treatment. The alloy is rich on properties like high hardness, strength and wear resistance with relatively high electrical and thermal conductivity.

Resistance Welding Tips, Wheels and Fixtures
Stud Welding Collets and Tips
Sprue Bushing
Cavities for Injection Molds
Hot runner Systems for Injection Molds
Welding Dies for Wire and Flash
Blow Pins
Pinch Offs
Mold Cavities for Bold Molds
Blow Pins
Pinch Offs
Mold Cavities for Bold Molds
Cores, Core and Ejector Pins for Injection Molds
Plunger Tips for Metal Die Casting Machines
Heat Sink Inserts in Steel Plastic Molds

Chemical Composition:
  Cr Cu Fe Ni Si
Min/Max 0.10 - 0.8 Rem 0.15 1.8 - 3.0 0.4 - 0.8
Nominals 0.45 - - 2.4 0.6

Physical Properties:
Product Property US Customary Metric
Coefficient of Thermal Expansion 9.7 ppm/°F (17.5 ppm/°C)
Coefficient of Thermal Expansion

Density .318 lb/in3 (8.81 g/cm3)
Electrical Conductivity 45% IACS (26 MS/m) minimum
Electrical Resistivity

Melting Point Liquid US

Melting Point Solid US 1900°F (1040°C)
Modulas of Elasticity in Tension 18.5x106 psi (128 GPa)
Modulas of Rigidity

Specific Gravity

Specific Heat Capacity at 70°F (20°C) - 0.092 BTU/lb °F (385 J/kg K)
Thermal Conductivity at 212°F (100°C) - 120 BTU/hr ft °F (208 W/m K)

Sizes Available:
HOLLOW RODS Min Bore Size 20 mm and Max OD 100 mm
ROUND RODS 8mm To 100 mm
HEX 10mm To 60mm
SQUARE 10mm To 60mm
FLAT 10mm Min Thickness and max Width 120mm
BILLETS Up to 200 mm
INGOTS As per Specification