Nikrothal® 80

Ribbon (flat wire)Datasheet

Datasheet updated 2024-09-05 12:04 (supersedes all previous editions)

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for materials under the trademark Kanthal^®.

Nikrothal^® 80 ribbon is an austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1200°C (2190°F). The alloy is characterized by high resistivity, good oxidation resistance and very good form stability. It has good ductility after use and excellent weldability.

Nikrothal^® 80 ribbon is used for electric heating elements in home appliances and industrial furnaces. Typical applications are flat irons, ironing machines, water heaters, plastic moulding dies, soldering irons, metal sheathed tubular elements and cartridge elements.

Due to extremely good adhesion properties of the surface oxide, Nikrothal^® 80 offers superior service life compared to competitive nickel-chromium alloys.

Chemical composition

	C %	Si %	Mn %	Cr %	Fe %	Ni %	Trace elements
Nominal Composition						Bal	Added
Min	-	1.0	-	19.0	-	-	-
Max	0.10	1.7	1.0	21.0	2.0¹⁾	-	-

¹⁾ Fe < 1.0 % on request

Mechanical properties

Thickness	Yield Strength	Tensile Strength	Elongation	Hardness
	R_p0.2	R_m	A
mm	MPa	MPa	%	Hv
0.40	365	780	35	180

Mechanical properties at elevated temperature
Temperature °C	900
MPa	100

Ultimate tensile strength - deformation rate 6.2 x 10 -2 min -1

Creep strength - 1% elongation in 1000 h
Temperature °C	800	1000
MPa	15	4

Physical properties

Density g/cm³	8.30
Electrical resistivity at 20°C Ω mm²/m	1.09

Temperature factor of resistivity
Temperature °C	100	200	300	400	500	600	700	800	900	1000	1100	1200
Ct	1.01	1.02	1.03	1.04	1.04	1.04	1.04	1.04	1.04	1.05	1.06	1.07

Coefficient of thermal expansion
Temperature °C	Thermal Expansion x 10^-6/ K
20 - 250	14.1
20 - 500	14.9
20 - 750	16.0
20 - 1000	17.2

Thermal Conductivity
Temperature °C	20	100	200	300	400	500	600	700	800	900	1000	1100
W m^-1 K^-1	15	15	15	15	17	19	21	22	24	26	28	30

Specific heat capacity
Temperature °C	20	100	200	300	400	500	600	700	800	900	1000	1100
kJ kg^-1 K^-1	0.46	0.46	0.48	0.50	0.52	0.54	0.56	0.60	0.63	0.65	0.67	0.70

Melting point °C	1400
Max continuous operating temperature in air °C	1200
Magnetic properties	The material is non-magnetic.
Emissivity - fully oxidized material	0.88