150 



TABLE 143.— COEFFICIENTS OF LINEAR THERMAL EXPANSION OF 

 SOME ALLOYS (continued) 



Temperature 

 or tempera- 

 ture range 

 Alloy °C 



Iron-cobalt 9.9 to 49.4 Co 30 to 100 



Iron-manganese, 2.8 to 14.4 Mn 20 to 100 



Iron-nickel, 3.6 Ni 20 to 100 



34.5 Ni 20 to 100 



36 Ni to 100 



40 to 50 Ni 30 to 100 



Iron-nickel-chromium, 6.6 to 74.7 Fe, 1.3 to 



70.1 Ni, 4.9 to 26.7 Cr 20 to 100 



20 to 1000 

 Iron-nickel-cobalt, 62.5 to 64.0 Fe, 30.5 to 



34.0 Ni, 3.5 to 6.0 Co 20 



61.3 Fe, 31.8 Ni, 6.0 Co 20 to 100 



20 to 240 



58.7 Fe, 32.4 Ni, 8.2 Co 20 to 200 



20 to 295 



Iron-silicon, 1.0 to 8.4 Si 20 to 100 



Kanthal (A, A-l, and D) § 20 to 100 



20 to 900 

 Kovar (see Fernico) 



Lead-antimony, 2.9 to 39.6 Sb 20 to 100 



Magnesium-aluminum, 10.4 Al 20 to 100 



20 to 200 



30 Al to 100 



to 200 



Magnesium-tin, 20.4 Sn 30 to 100 



30 to 300 

 46.3 Sn 30 to 100 



30 to 300 



Magnesium-zinc, 20 Zn 40 to 100 



50 Zn 40 to 100 



Manganin 20 to 100 



to 400 

 to 800 



Monel Metal 25 to 100 



25 to 600 



Nickel -chromium, 20.4 Cr 20 to 100 



20 to 1000 



47.7 Cr 20 to 100 



20 to 1000 



Nickel silver, 62.0 to 63.2 Cu, 10.0 to 20.2 Ni, 



17.4 to 27.1 Zn to 100 



to 400 



§ Composition of Kanthal: A: 68.S Fe, 23.4 Cr, 6.2 Al, 1.9 Co, 0.06 C; A-l: 69.0 Fe, 23.4 Cr, 5.7 Al, 

 1.9 Co, 0.06 C; D: 70.9 Fe, 22.6 Cr, 4.5 Al, 2.0 Co, 0.09 C. 



(continued) 



SMITHSONIAN PHYSICAL TABLES 



