C18000
C18000 Copper Chromium Nickel Silicon
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.
Applications
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Resistance Welding Tips, Wheels and Fixtures
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Stud Welding Collets and Tips
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Sprue Bushing
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Cavities for Injection Molds
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Hot runner Systems for Injection Molds
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Welding Dies for Wire and Flash
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Blow Pins
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Pinch Offs
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Mold Cavities for Bold Molds
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Cores, Core and Ejector Pins for Injection Molds
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Plunger Tips for Metal Die Casting Machines
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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 | 18.5×106 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 |
