| Data | cambio €/$ | LME $/ton | Rame €/ton |
| 22/02/2012 | 1.3230 | 8.391,00 | 6.342,40 |
| 21/02/2012 | 1.3222 | 8.325,00 | 6.296,32 |
| 20/02/2012 | 1.3266 | 8.234,00 | 6.206,84 |
resistenza conduttori
EN IEC 60228 standard
| Nominal section (mm2) |
Min. nr wires in conductor Class 1 | Min. nr wires in conductor Class 2 | Max. wire dia. of conductor Class 5 (mm) | Max. wire dia. of conductor Class 6 (mm) | Max. Conductor Resistance at 20 °C in d.c. | |||
| class 1 and class 2 | class 5 and class 6 | |||||||
| Copper (ohm/km) | Tinned Copper (ohm/km) | Copper (ohm/km) | Tinned Copper (ohm/km) | |||||
| 0,5 | 1 | 7 | 0,21 | 0,16 | 36,000 | 36,700 | 39,000 | 40,100 |
| 0,75 | 1 | 7 | 0,21 | 0,16 | 24,500 | 24,800 | 26,000 | 26,700 |
| 1,0 | 1 | 7 | 0,21 | 0,16 | 18,100 | 18,200 | 19,500 | 20,000 |
| 1,5 | 1 | 7 | 0,26 | 0,16 | 12,100 | 12,200 | 13,300 | 13,700 |
| 2,5 | 1 | 7 | 0,26 | 0,16 | 7,410 | 7,560 | 7,980 | 8,210 |
| 4 | 1 | 7 | 0,31 | 0,16 | 4,610 | 4,700 | 4,950 | 5,090 |
| 6 | 1 | 7 | 0,31 | 0,21 | 3,080 | 3,110 | 3,300 | 3,390 |
| 10 | 1 | 7 | 0,41 | 0,21 | 1,830 | 1,840 | 1,910 | 1,950 |
| 16 | 1 | 7 | 0,41 | 0,21 | 1,150 | 1,160 | 1,210 | 1,240 |
| 25 | - | 7 | 0,41 | 0,21 | 0.727 | 0,734 | 0,780 | 0,795 |
| 35 | - | 7 | 0,41 | 0,21 | 0,524 | 0,529 | 0,554 | 0,565 |
| 50 | - | 19 | 0,41 | 0,31 | 0,387 | 0,391 | 0,386 | 0,393 |
| 70 | - | 19 | 0,51 | 0,31 | 0,268 | 0,270 | 0,272 | 0,277 |
| 95 | - | 19 | 0,51 | 0,31 | 0.193 | 0,195 | 0,206 | 0,210 |
| 120 | - | 37 | 0,51 | 0,31 | 0,153 | 0,154 | 0,161 | 0,164 |
| 150 | - | 37 | 0,51 | 0,31 | 0,124 | 0,126 | 0,129 | 0,132 |