Physical, mechanical and chemical properties at 20°C

Property

Aluminium

Iron

Nickel

Copper

Titanium

Crystal structure

FCC

BCC

FCC

FCC

HCP

Density (gm/cm3)

2.7

7.85

8.9

8.93

4.5

Melting point (°C)

660

1536

1455

1083

1670

Specific heat (J/kg K)

930

448

440

385

470

Thermal conductivity

235

79.6

92.1

389.4

15.5

(W/m K)

Coeff. of thermal

23.9 x 10-6

12 x 10-6

1 x 10-6

16.5 x 10-6

8.2 x 10-6

expansion (Al/l °C)

Electrical resistivity

2.65

9.7

6.8

1.67

55

(|mW cm)

Young's modulus E

6.7 x 104

21 x 104

21 x 104

12.4 x 104

10.8 x 104

(N/mm2)

Ultimate tensile

65

235

300

210

245

strength (N/mm2)