Nichrom 80	Nichrom 70	Nichrom 60	Nichrom 40
Max continuous
Operating temp., °C	1200	1250	1150	1100
°F	2190	2280	2100	2010
Nominal composition, % Cr	20	30	15	20
Al	-	-	-	-
Fe	-	-	-	-
Ni	80	70	60	35
Resistivity at 20°C, mm-2 m-1	1.09	1.18	1.11	1.04
at 68°F, /cmf	655	704	668	626
Density, g/cm3	8.3	8.1	8.2	7.9
lb/in3	0.300	0.296	0.296	0.285
Coefficient of thermal expansion, K-1
20-750°C, 68-1380°F	17.10-6	16.10-6	16.10-6	18.10-6
20-1000°C, 68-1838°F	18.10-6	17.10-6	17.10-6	19.10-6
Thermal Conductivity at 20°C
W m-1 K-1	15	13	13	13
68°F, Btu in ft-2 h-1 °F-1	104	90	90	90
Specific heat capacity
KJ kg-1K-1,20°C	0.46	0.46	0.46	0.50
Btu Ib-1 °F-1, 68°F	0.110	0.110	0.110	0.119
Melting point, °C	1400	1380	1390	1390
°F	2550	2515	2535	2535
Mechanical properties (approx.)
Tensile strength, N mm-2	750	875	750	750
psi	109000	127000	109000	109000
Yield point, N mm-2	450	450	450	450
psi	65000	65000	65000	65000
Hardness, Hv	180	185	180	180
Elongation at rupture, %	30	30	30	30
Tensile strength at 900°C, Nmm-2	100	120	100	120
1650°F, psi	14500	17400	14500	17400
Creep strength at 800°C, Nmm-2	15	15	15	20
1000°C, Nmm-2	4	4	4	4
1470°F, psi	2160	2160	2160	2160
1830°F, psi	580	580	580	580
Magnetic properties	Non	Non	Slightly	Non
Emissivity, fully oxidized condition	0.88	0.88	0.88	0.88