HR04 C19020 Copper vs. HR04 C19025 Copper
Both HR04 C19020 copper and HR04 C19025 copper are copper alloys. Both are furnished in the HR04 (full-hard and stress relieved) temper. Their average alloy composition is basically identical.
For each property being compared, the top bar is HR04 C19020 copper and the bottom bar is HR04 C19025 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 120 |
| Elongation at Break, % | 3.4 | |
| 9.5 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 44 | |
| 43 |
| Shear Strength, MPa | 280 | |
| 320 |
| Tensile Strength: Ultimate (UTS), MPa | 480 | |
| 530 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 200 |
| Melting Completion (Liquidus), °C | 1090 | |
| 1080 |
| Melting Onset (Solidus), °C | 1030 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 380 |
| Thermal Conductivity, W/m-K | 190 | |
| 160 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 50 | |
| 40 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 50 | |
| 40 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 31 |
| Density, g/cm3 | 8.9 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.8 |
| Embodied Energy, MJ/kg | 44 | |
| 44 |
| Embodied Water, L/kg | 310 | |
| 320 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 18 | |
| 18 |
| Strength to Weight: Axial, points | 15 | |
| 17 |
| Strength to Weight: Bending, points | 15 | |
| 16 |
| Thermal Diffusivity, mm2/s | 55 | |
| 47 |
| Thermal Shock Resistance, points | 17 | |
| 19 |
Alloy Composition
| Copper (Cu), % | 95.7 to 99.19 | |
| 97.1 to 98.5 |
| Nickel (Ni), % | 0.5 to 3.0 | |
| 0.8 to 1.2 |
| Phosphorus (P), % | 0.010 to 0.2 | |
| 0.030 to 0.070 |
| Tin (Sn), % | 0.3 to 0.9 | |
| 0.7 to 1.1 |
| Zinc (Zn), % | 0 | |
| 0 to 0.2 |
| Residuals, % | 0 | |
| 0 to 0.3 |