| Copper, Cu; Cold-Worked | |
|---|---|
| Categories: | MetalNonferrous MetalCopper AlloyPure Element |
| Material Notes: | Cold-worked applies only to tensile and/or hardness values; other property values are typical of the element. This entry is for pure Cu, MatWeb also has entries for many alloys. In general, copper alloys exhibit good to excellent corrosion resistance and high thermal conductivity and very high electrical conductivity. Pure copper’s electrical conductivity is so high that many metals are measured against it in the form of the IACS (International Annealed Copper Standard). Applications include architectural uses, coinage, condenser/heat exchangers, plumbing, radiator cores, musical instruments, locks, fasteners, hinges, ammunition components, and electrical connectors. Small amounts of alloying elements are often added to copper to improve certain characteristics. Alloying can increase or reduce the strength, hardness, electrical and thermal conductivity, corrosion resistance, or change the color. Common primary alloying elements include tin (resulting in bronze) or zinc (resulting in brass). |
| Vendors: | Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494.Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material. |
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 8.96 g/cc | 0.324 lb/in³ | |||
 | 7.764 g/cc @Temperature 1300 °C | 0.2805 lb/in³ @Temperature 2370 °F | |||
| 7.846 g/cc @Temperature 1200 °C | 0.2835 lb/in³ @Temperature 2190 °F | ||||
| 7.924 g/cc @Temperature 1100 °C | 0.2863 lb/in³ @Temperature 2010 °F | ||||
| 8.93 g/cc @Temperature 20.0 °C | 0.323 lb/in³ @Temperature 68.0 °F | ||||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 65.546 | 65.546 | 1995 | ||
| Atomic Number | 29 | 29 | |||
| Thermal Neutron Cross Section | 3.8 barns/atom | 3.8 barns/atom | |||
| X-ray Absorption Edge | 1.38 Å | 1.38 Å | K | ||
| 11.269 Å | 11.269 Å | LI | |||
| 12.994 Å | 12.994 Å | LII | |||
| 13.2578 Å | 13.2578 Å | LIII | |||
| Electrode Potential | -0.520 V | -0.520 V | monovalent | ||
| -0.340 V | -0.340 V | divalent | |||
| Electronegativity | 1.9 | 1.9 | Pauling | ||
| Ionic Radius | 0.720 Å | 0.720 Å | Crystal Ionic Radius for Valence +2 | ||
| 0.960 Å | 0.960 Å | Crystal Ionic Radius for Valence +1 | |||
| Electrochemical Equivalent | 1.185 g/A/h | 1.185 g/A/h | divalent | ||
| 2.38 g/A/h | 2.38 g/A/h | monovalent | |||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Brinell | 89 | 89 | Converted from Vickers for 500 kg load/10 mm ball Brinell test. | ||
| Hardness, Rockwell A | 35 | 35 | Converted from Vickers. | ||
| Hardness, Rockwell B | 51 | 51 | Converted from Vickers. | ||
| Hardness, Vickers | 100 | 100 | |||
| Modulus of Elasticity | 110 GPa | 16000 ksi | |||
| Bulk Modulus | 140 GPa | 20300 ksi | |||
| Poissons Ratio | 0.35 | 0.35 | |||
| Shear Modulus | 46.0 GPa | 6670 ksi | |||
| Electrical Properties | Metric | English | Comments | ||
| Electrical Resistivity | 0.00000170 ohm-cm | 0.00000170 ohm-cm | |||
| Magnetic Susceptibility | -8.00e-8 | -8.00e-8 | cgs/g | ||
| Thermal Properties | Metric | English | Comments | ||
| Heat of Fusion | 204.8 J/g | 88.10 BTU/lb | |||
| Heat of Vaporization | 5234 J/g | 2252 BTU/lb | |||
| CTE, linear | 16.4 µm/m-°C @Temperature 20.0 – 100 °C | 9.11 µin/in-°F @Temperature 68.0 – 212 °F | |||
| 18.5 µm/m-°C @Temperature 250 °C | 10.3 µin/in-°F @Temperature 482 °F | ||||
| 20.2 µm/m-°C @Temperature 500 °C | 11.2 µin/in-°F @Temperature 932 °F | ||||
| 24.8 µm/m-°C @Temperature 925 °C | 13.8 µin/in-°F @Temperature 1700 °F | ||||
| Specific Heat Capacity | 0.385 J/g-°C | 0.0920 BTU/lb-°F | |||
| Thermal Conductivity | 385 W/m-K | 2670 BTU-in/hr-ft²-°F | |||
| | 357 W/m-K @Temperature 727 °C | 2480 BTU-in/hr-ft²-°F @Temperature 1340 °F | |||
| 398 W/m-K @Temperature 27.0 °C | 2760 BTU-in/hr-ft²-°F @Temperature 80.6 °F | ||||
| 401 W/m-K @Temperature 0.000 °C | 2780 BTU-in/hr-ft²-°F @Temperature 32.0 °F | ||||
| 483 W/m-K @Temperature -173 °C | 3350 BTU-in/hr-ft²-°F @Temperature -279 °F | ||||
| 10500 W/m-K @Temperature -253 °C | 72900 BTU-in/hr-ft²-°F @Temperature -423 °F | ||||
| 19600 W/m-K @Temperature -263 °C | 136000 BTU-in/hr-ft²-°F @Temperature -441 °F | ||||
| Melting Point | 1083.2 – 1083.6 °C | 1981.8 – 1982.5 °F | |||
| Boiling Point | 2562 °C | 4644 °F | |||
| Optical Properties | Metric | English | Comments | ||
| Emissivity (0-1) | 0.15 @Wavelength >=655 nm, Temperature 807 °C | 0.15 @Wavelength >=655 nm, Temperature 1480 °F | polished | ||
| Reflection Coefficient, Visible (0-1) | 0.63 | 0.63 | |||
| Component Elements Properties | Metric | English | Comments | ||
| Copper, Cu | 100 % | 100 % | |||
| Descriptive Properties | |||||
| CAS Number | 7440-50-8 | ||||
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