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Industrial
- Copper Motor Rotor
- Casting Alloys
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- Comparison of Mold Alloy Properties
- Whirlpool Uses Copper Alloy Mold
- Technical Paper - Cooling Prediction
- Technical Paper - Getting Heat Out of the Mold
- Copper Core With Copper Chill Plate Runs Better Than Water In Steel
- Copper-Alloy Core Solves Warpage
- Copper-Alloy Cores Reduce Cycle Time
- Wear Research To Compare Copper Molds To Steel
- ANTEC Report - Use of Copper Alloys to Reduce Mold Condensation Problems
- ANTEC Report - Impact of Fines Separation
- ANTEC Report - Comparison of Various Hard Coatings
- ANTEC Report - Understanding the Source of Reduced Mechanical Properties
- ANTEC Report - Resistance to Erosive Wear
- ANTEC Report - Undercutting Mold Performance
- ANTEC Report - Minimization of Gate Wear
- Applications
- Bronze Sleeve Bearings
- Selecting Bronze Bearing Materials
- Electronic Connector Design Guide
- Mold Design Guidelines
Electrical Conductivity
Photo Courtesy of IBM When used for connectors or other electrical applications, the inherently high electrical conductivity of copper and copper alloys is very important. The conductivity of copper is expressed in units of a percentage of IACS (International Annealed Copper Standard). This standard is based on an annealed copper wire having a density of 8.89 g/cm3, 1 meter long, weighing 1 gram, with a resistance of 0.15328 ohms. This standard was assigned the value 100 at 200 C (680 F). The higher the %IACS, the more conductive the material is. It is not uncommon for commercially pure copper products to have IACS conductivity values greater than 100 because of improved processing techniques which have been developed since the adoption of the standard in 1913. Both temperature and alloying elements have an effect on conductivity and this property must be balanced against the need for strength, corrosion resistance and formability.
Properties of Copper & Copper Alloys
