Cr20ni80 Nicr80/20 Alloy Ni80 Nichrome Heating Resistance Strip for Heater
The material NiCr8020 with the material number 2.4869 is applied in the form of strips, sheets, tubes and wires for furnace construction components and heating conductors.
It is a nickel-chromium heating conductor alloy for operating temperatures of up to 1150 °C and often contains additives of rare earths for a higher resistance to oxidation, especially with frequent switching operations or broad temperature variations.
The resistance to atmospheric corrosion at 20 °C is high up to the upper operating temperature the resistance to air and other oxygen-containing gases as well as to nitrogen-containing low-oxygen gases is high as well, yet it is low to oxidizing as well as reducing gases containing sulphur.
The resistance to carbonizing is high. Application for industrial electric furnaces, enamelling furnaces, household appliances, night-current storage space-heaters.
Chemical Composition and Propertes:
|
|
Propertes/Grade
|
NiCr 80/20
|
NiCr 70/30
|
NiCr 60/15
|
|
Main Chemical Composition(%)
|
Ni
|
Bal.
|
Bal.
|
55.0-61.0
|
|
Cr
|
20.0-23.0
|
28.0-31.0
|
15.0-18.0
|
|
Fe
|
≤ 1.0
|
≤ 1.0
|
Bal.
|
|
Max Working Temperature(ºC)
|
1200
|
1250
|
1150
|
|
Resistivity at 20ºC(μ Ω · m)
|
1.09
|
1.18
|
1.12
|
|
Density(g/cm3)
|
8.4
|
8.1
|
8.2
|
|
Thermal Conductivity(KJ/m· h· ºC)
|
60.3
|
45.2
|
45.2
|
|
Coefficient of Thermal Expansion(α × 10-6/ºC)
|
18
|
17
|
17
|
|
Melting Point(ºC)
|
1400
|
1380
|
1390
|
|
Elongation(%)
|
> 20
|
> 20
|
> 20
|
|
Micrographic Structure
|
austenite
|
austenite
|
austenite
|
|
Magnetic Property
|
nonmagnetic
|
nonmagnetic
|
nonmagnetic
|
|
|
|
|
|
|
|
Propertes/Grade
|
NiCr 35/20
|
NiCr 30/20
|
Karma
|
Evanohm
|
Main Chemical
|
Ni
|
34.0-37.0
|
30.0-34.0
|
Bal
|
Bal
|
Composition(%)
|
Cr
|
18.0-21.0
|
18.0-21.0
|
19.0-21.5
|
19.0-21.5
|
|
Fe
|
Bal.
|
Bal.
|
2.0-3.0
|
-
|
Max Working Temperature(ºC)
|
1100
|
1100
|
300
|
400
|
Resistivity at 20ºC
|
1.04
|
1.04
|
1.33
|
1.33
|
(μ Ω · m)
|
Density(g/cm3)
|
7.9
|
7.9
|
8.1
|
8.1
|
Thermal Conductivity
|
43.8
|
43.8
|
46
|
46
|
(KJ/m· h· ºC)
|
Coefficient of Thermal
|
19
|
19
|
-
|
-
|
Expansion(α × 10-6/ºC)
|
Melting Point(ºC)
|
1390
|
1390
|
1400
|
1400
|
Elongation(%)
|
> 20
|
> 20
|
> 20
|
> 20
|
Micrographic Structure
|
austenite
|
austenite
|
austenite
|
austenite
|
Magnetic Property
|
nonmagnetic
|
nonmagnetic
|
nonmagnetic
|
nonmagnetic
|
Typical Mechanical properties(1.0mm)
-
Elongation: 30%
-
Yield Strength: 420Mpa
-
Tensile Strength: 810Mpa
Chemical
Composition
|
Nickel
80%,
Chrome
20%
|
Condition
|
Bright/Acid
white/Oxidied
Color
|
Diameter
|
0.018mm~1.6mm
in
spool,
1.5mm-8mm
packing
in
coil,
8~60mm
in
rod
|
Nichrome
Round
Wire
|
Diameter
0.018mm~10mm
|
Nichrome
Ribbon
|
Width
5~0.5mm,
thickness
0.01-2mm
|
Nichrome
Strip
|
Width
450mm~1mm,
thickness
0.001m~7mm
|
Diameter
|
1.5mm-8mm
packing
in
coil,
8~60mm
in
rod
|
Grade
|
Ni80Cr20,
Ni70/30,
Ni60Cr15,
Ni60Cr23,
Ni35Cr20Fe,
|
Ni30Cr20
Ni80,
Ni70,Ni60,
Ni40,
|
Advantage
|
The metallurgical structure of nichrome
|
confers
them
a
very
good
plasticity
when
cold.
|
Characteristics
|
Stable
performance;
Anti-oxidation;
Corrosion
resistance;
|
High
temperature
stability;
Excellent
coilforming
ability;
|
Uniform
and
beautiful
surface
condition
without
spots.
|
Usage
|
Resistance
heating
elements;Material
in
metallurgy,
|
Household
appliances;Mechanical
manufacturing
and
|
other
industries.
|
Resistance Wires
|
RW30
|
W.Nr 1.4864
|
Nickel 37%, Chrome 18%, Iron 45%
|
RW41
|
UNS N07041
|
Nickel 50%, Chrome 19%, Cobalt 11%, Molybdenum 10%, Titanium 3%
|
RW45
|
W.Nr 2.0842
|
Nickel 45%, Copper 55%
|
RW60
|
W.Nr 2.4867
|
Nickel 60%, Chrome 16%, Iron 24%
|
RW60
|
UNS NO6004
|
Nickel 60%, Chrome 16%, Iron 24%
|
RW80
|
W.Nr 2.4869
|
Nickel 80%, Chrome 20%
|
RW80
|
UNS NO6003
|
Nickel 80%, Chrome 20%
|
RW125
|
W.Nr 1.4725
|
Iron BAL, Chrome 19%, Aluminium 3%
|
RW145
|
W.Nr 1.4767
|
Iron BAL, Chrome 20%, Aluminium 5%
|
RW155
|
|
Iron BAL, Chrome 27%, Aluminium 7%, Molybdenum 2%
|