TABLE OF CONTENTS Metals and alloys possess certain properties which make them especially suitable for the processes involved in vehicle body work, particularly the forming and shaping of vehicle body parts either by press or by hand, and some of the jointing processes. These properties are described in the following sections, and some typical values of characteristics are shown in Tables 5.1 and 5.2.
| Metal | Melting temperature range ( C) | Density (kg/m 3 ) | Specific heat capacity/ (J/kg/K 10 3 ) | Thermal conductivity (W/m/K) | Electrical conductivity (% IACS) | Coefficient of linear expansion/ (K 10- 6 ) |
|---|---|---|---|---|---|---|
| Aluminium | 660 | 2.69 | 0.22 | 218 | 63 | 23 |
| A1-3.5 magnesium | 550 620 | 2.66 | 0.22 | 125 | 25 | 23 |
| Duralumin type | 530 610 | 2.80 | 0.21 | 115 140 | 20 36 | 23 |
| Copper | 1085 | 8.92 | 0.39 | 393 | 101 | 17 |
| 70/30 brass | 920/950 | 8.53 | 0.09 | 120 | 17 | 19 |
| 95/5 tin bronze | 980/990 | 8.74 | 0.09 | 80 | 12 | 17 |
| Lead | 327 | 11.34 | 0.13 | 35 | 8 | 29 |
| Magnesium | 650 | 1.73 | 1.04 | 146 | 35 | 30 |
| Nickel | 1455 | 8.90 | 0.51 | 83 | 21 | 13 |
| Monel | 1330/1360 | 8.80 | 0.43 | 26 | 3 | 10 |
| Tin | 232 | 7.30 | 0.22 | 64 | 13 | 20 |
| Titanium | 1665 | 4.50 | 0.58 | 17 | 3 | 8.5 |
| Zinc | 419 | 7.13 | 0.39 | 113 | 26 | 37 |
| Iron | 1535 | 7.86 | 0.46 | 71 | 7 | 12 |
| Mild steel | 1400 | 7.86 | 0.12 | 45 | 31 | 11 |
| Material | Modulus of elasticity E (kN/mm 2 ) | Tensile and compressive strength (N/mm 2 ) | Elongation (%) | Hardness (HV) |
|---|---|---|---|---|
| Pure aluminium | 68-70 | 62-102 | 45-7 |
