Titanium - Comparison of Properties with Other Metals

Table 1 provides a direct comparison of physical, thermal and electrical properties of pure titanium with other metals such as 304 stainless steel, aluminium, magnesium, nickel and copper.

Table 1. Comparison of physical properties of titanium with those of other metals

Property	Titanium	304 Stainless Steel	Aluminium	Magnesium	Nickel	Copper
Atomic No.	22	--	13	12	28	29
Atomic Wt.	47.9	--	26.97	24.32	58.69	63.57
Specific Gravity	4.5	7.9	2.7	1.7	8.9	8.9
Linear thermal expansion coefficient (/°C)	8.4X10^-6	17X10^-6	23X10^-6	25X10^-6	15X10^-6	17X10^-6
Specific heat (cal/gr/°C)	0.124	0.12	0.21	0.24	0.11	0.092
Thermal conductivity coefficient (cal/cm2/sec/°C/cm)	0.041	0.039	0.49	0.38	0.22	0.92
Specific electrical resistance (µOhm-cm)	55	72	2.7	4.3	9.5	1724
Electrical conductivity (%IACA)	3.1	2.4	64	40	18	100
Young's modulus (kg/mm2)	10850	20403	7050	4570	21000	11000
Poisson's ratio	0.34	0.3	0.33	0.35	0.30	0.34