Nichrome 30 (W.Nr. 1.4860) | HB SPECIAL ALLOY

Nichrome 30snihw2021-12-21T15:34:47+08:00

Nichrome 30 (W.Nr. 1.4860) is an austenitic nickel-chromium alloy for use at temperature up to 1100℃. The alloy is characterized by high resistivity and good oxidation resistance. It has good ductility after use and excellent weldability.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Nikrothal 30 Resistohm 30	Cr20Ni30	–	–	–	–	1.4860	–	–	–	–

Chemical Composition, %

Alloy	C	Si	Mn	P	S	Cr	Ni	Al	Fe
Nichrome 30	≤0.08	1.0-3.0	≤1.00	≤0.020	≤0.015	18.0-21.0	30.0-34.0	–	Bal

Mechanical Properties (RT, Annealed)

Tensile Strength, Rm/MPa	Elongation, A/%
Tensile Strength, Rm/MPa	Dia. >3.00mm (Wire) Thk. >0.20mm (Strip)	Dia. 0.10-3.00mm (Wire) Thk. ≤0.20mm (Strip)
≥600	≥25	≥20

Physical Properties

Max Working Temp., ℃	Melting Point, ℃	Density, g/cm3	Resistivity, μΩ·m 20℃	Specific Heat, J/(g•K)	Thermal Conductivity, W/(m•K) 20℃	Average Coefficient of Thermal Expansion,α×10-6/℃ 20-1000℃	Micrographic Structure	Magnetic Properties
1100	1390	7.90	1.04	0.50	13	19.0	Austenitie	Non-Magnetic

Life Test

Test Temperature, ℃	Continuous Service Time Hours, ℃
1100	≥80

Temperature Factor of Resistivity

20℃	100℃	200℃	300℃	400℃	500℃	600℃	700℃	800℃	900℃	1000℃	1100℃	1200℃	1300℃
1.000	1.023	1.052	1.079	1.103	1.125	1.141	1.158	1.173	1.187	1.201	1.214	1.226	–

Available Products and Specifications

Rod, Bar, Wire and Forgings	GB/T 1234-2012, ASTM B344-01, DIN 17470-1984
Plate, Sheet and Strip	GB/T 1234-2012, ASTM B344-01, DIN 17470-1984
Pipe and Tube	–
Welding Product	–
Others	–

Features

High resistivity
Good oxidation resistance
Excellent form stability
Good ductility after using
Excellent weldability

Applications

Nigh-storage heaters
Convection heaters
Heavy duty rheostats
Fan heaters
Heating cables and rope heaters in defrosting and deicing elements
Electric blankets and pads
Car seats
Baseboard heaters
Floor heaters
Resistors
Heating elements in furnace for working temperature up to 1000℃