Appendix B: Selected Properties of Important Engineering Materials

*Material*	*Melting Point C*	*Density at 20 C g/cm ³*	*Coefficient Thermal Exp.* 10 ^- ⁶ C	*Th. Cond. W/m- K*	*Yield Str. MPa*	*Tensile Str. MPa*	*Tensile Modulus GPa*	*Hardness VHN*
*Metals and Alloys*
Aluminum (Al)	660.2	2.7	23.6	247	40 100	90 140	74	50
Al alloys	-	2.6 2.9	18.0 24.5	88 243	80 450	120 580	69 75	50 160
Beryllium (Be)	1,278	1.85	11.5	188	-	-	300	-
Cast iron (gray)	115 1180	7.3	11.1 12.6	46.0 57.3	220 350	300 400	140 170	120 300
Copper (Cu)	1,084	8.92	17.0	398	60 80	160 240	120	50
Cu alloys	-	7.45 9.40	15.8 22.0	12 391	60 1000	200 1400	120 150	50 300
Gold (Au)	1,063	19.3	14.2	80	nil	130	77	<50
Hafnium (Hf)	2,230	13.28	5.9	-	-	450	138	190 DPH
Invar	-	8.05	1.6	10	276	517	141	120 150
Lead (Pb)	327.4	11.34	29.3	34	-	-	30	<50
Magnesium (Mg)	650	1.74	25.2	418	80	120	46	50
Mg alloys	-	1.75 1.9	25 27	51 138	80 200	165 265	41 45	50 120
Molybdenum (Mo)	2,620	10.2	4.8	142	500	630	320	500 600
Nickel (Ni)	1,455	8.90	13	70	148	462	204	75
Ni alloys	1,400 1,455	8.0 8.4	12.3 13.9	9.8 70	150 520	460 980	180 230	75 350
Niobium (Nb)	2,468	8.57	7.3	52.7	200	275	105	160
Platinum (Pt)	1,769	21.5	9.5	71.1	<13.8	124	160	100
Silver (Ag)	960.5	10.5	19.7	428	nil	170 400	74	<50
SS 316L ^[*]	-	7.8 8.0	15.9	16.2	205 310	515 600	190	250
Stainless steel, Aust.	1505 1550	8.0	15.0 17.5	14.4 17.2	205 310	515 620	190 195	200 25
Stainless steel, Ferritic	-

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