Introduction:
0Cr21Al6Nb furnace wire is a high-temperature alloy material
commonly used in electric furnace heating elements, thermocouples
and resistance wires. The alloy is known for its excellent
oxidation resistance and high temperature resistance.
The chemical composition of 0Cr21Al6Nb furnace wire mainly includes
chromium (Cr), aluminum (Al) and niobium (Nb). Among them, the
content of chromium accounts for about 21% by mass, the content of
aluminum accounts for about 6% by mass, and the content of niobium
is relatively small, usually 0.5-1.5% by mass. The reasonable ratio
of these elements gives the furnace wire excellent high temperature
resistance.
The alloy has a high melting point (about 1500 degrees Celsius) and
can operate stably for a long time in high temperature
environments. It has excellent antioxidant capacity and can resist
oxidation, corrosion and deformation at high temperatures,
extending its service life. In addition, 0Cr21Al6Nb furnace wire
also has a low linear expansion coefficient, allowing it to
maintain good stability during thermal cycles.
The furnace wire has a high thermal conductivity, which helps to
conduct heat quickly and improve heating efficiency. At the same
time, it also has high tensile strength and yield strength, and can
withstand mechanical stress in high temperature environments. In
addition, 0Cr21Al6Nb furnace wire has a certain elongation at room
temperature, making it more flexible and easier to operate during
processing and installation.
Parameter:
Chromium (Cr): approximately 21% by mass
Aluminum (Al): approximately 6% by mass
Niobium (Nb): relatively small content, usually 0.5-1.5% mass ratio
Other elements: mainly iron (Fe) and impurity elements, such as
manganese (Mn), silicon (Si), etc.
Density: approximately 7.10g/cm3
Melting point: approximately 1500 degrees Celsius
Thermal Conductivity: Approximately 13-15 Watts/meter Kelvin
(around room temperature)
Linear expansion coefficient: approximately 13×10^-6/degrees
Celsius (within room temperature range)
Tensile strength: about 600-800 MPa
Yield strength: about 280-450 MPa
Elongation: approximately 10-25% (at room temperature)
item | value |
Place of Origin | Jiangsu,China |
Type | Fe-Cr-Aluminum Ribbon |
Application | Industry Furnace |
Conductor Material | ferro alloy |
Certificate | ISO9001 |
Thermal conductivity: | 15 W/(m.K) (20ºC) |
Executive standard | GB/T1234-2012 |
Dimensions | User's Demand |
Size | 0.56-5mm |
shape | shaped strip |
width | 6-50mm |
Packing | Pallet |
highest temperature | 1400ºC |
melting point | 1520ºC |
Alloy Nomenclature Performance | 1Cr13AL4 | 0Cr25Al5 | 0Cr21AL6 | 0Cr23Al5 | 0Cr21Al4 | 0Cr21Al6Nb | 0Cr27Al7Mo2 |
Main Chemical composition
| Cr | 12.0-15.0 | 23.0-26.0 | 19.0-22.0 | 20.5-23.5 | 18.0-21.0 | 21.0-23.0 | 26.5-27.8 |
Al | 4.0-6.0 | 4.5-6.5 | 5.0-7.0 | 4.2-5.3 | 3.0-4.2 | 5.0-7.0 | 6.0-7.0 |
Re | opportune | opportune | opportune | opportune | opportune | opportune | opportune |
Fe | Rest | Rest | Rest | Rest | Rest | Rest | Rest |
| | | | | | Nb0.5 | Mo1.8-2.2 |
Max. continuous service temp. of element(°C) | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 |
Resistivity at 20ºC(μΩ·m) | 1.25 | 1.42 | 1.42 | 1.35 | 1.23 | 1.45 | 1.53 |
Density(g/cm3) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 |
Thermal conductivity(KJ/m·h·ºC) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | -- |
Coefficient of lines expansion(α×10-6/ºC) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 |
Melting point approx.( ºC) | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 |
Tensile strength(N/mm2) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 |
Elongation at rupture(%) | >16 | >12 | >12 | >12 | >12 | >12 | >10 |
Variation of area(%) | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 |
Repeat Bending frequency(F/R) | >5 | >5 | >5 | >5 | >5 | >5 | >5 |
Hardness(H.B.) | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 |
continuous service time(Hours/ ºC) | -- | ≥80/1300 | ≥80/1300 | ≥80/1300 | ≥80/1250 | ≥50/1350 | ≥50/1350 |
Micrographic structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite |
Magnetic properties | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic |
Characteristic:
- High temperature stability: 0Cr21Al6Nb furnace wire can maintain
excellent stability in high temperature environments, with a
maximum operating temperature of 1350°C.
- Antioxidant performance: Under high temperature conditions, it
forms a dense oxide protective film, which effectively prevents
further oxidation reactions and improves service life.
- Excellent resistance characteristics: 0Cr21Al6Nb furnace wire has
moderate resistivity, which can provide stable resistance value to
meet different heating needs.
- Corrosion resistance: This furnace wire has good corrosion
resistance to common corrosive media and can be used for a long
time in harsh environments.
- High mechanical strength: 0Cr21Al6Nb furnace wire has high
mechanical strength and tensile properties, making it easy to
process and install.
Specific applications:
- Industrial heating equipment: used for heating elements such as
various industrial electric furnaces, hot air stoves and ovens to
provide uniform high-temperature heating effects.
- Home appliance field: used as heating elements in electric water
heaters, electric stoves and other household appliances to provide
fast and efficient heating functions.
- Heat treatment industry: Used as heating elements in metal heat
treatment equipment to ensure precise heating temperature and
treatment effects of metal materials.
- Laboratory equipment: Heating equipment, test furnaces, etc. used
in laboratories to provide reliable heating control and stability.
In general, 0Cr21Al6Nb furnace wire is a high-resistance alloy with
high temperature stability, oxidation resistance and corrosion
resistance. It is widely used in industrial heating equipment, home
appliances, heat treatment industry and laboratory equipment to
meet heating needs in different scenarios. At the same time, the
furnace wire has good mechanical strength and processing
performance, and is easy to produce and install.
