Electric Resistance Wire Heating Fecral Wire 0cr21al6nb 0cr27al7mo2
Element Wire
145A resisitohm large-sized cold-drawn wire products can be used
for high-temperature resistance furnace. Practice has proved that:
the product process is stable, integrated performance is good. Has
good high temperature oxidation resistance and longer service life;
excellent winding properties at room temperature processing, ease
of processing molding; little rebound resilience and so on.
Processing performance is very good; operating temperature can
reach 1400 ºC.
Main specifications and uses:
Conventional Product specifications: 0.5 ~ 10 mm
Uses: mainly used in powder metallurgy furnace, diffusion furnace,
radiant tube heater and all kinds of high-temperature furnace
heating body.
MAIN CHEMICAL ELEMENTS AND PROPERTIES
| Properties Grade | | | | | | | |
| | Cr | Al | | Re | Fe |
| | | | | 25.0 | 6.0 | | Suitable | Balance |
| Max Continuous Service Temperature(ºC) | | Diameter 1.0-3.0 | | Diameter large than 3.0, |
| 1225-1350ºC | | | 1400ºC |
| | | | | | | |
| Resisivity 20ºC (ohm*mm2/m) | | | | 1.45 | |
| Density(g/cm3) | | | | | 7.1 | |
| Approximate Melting Point( ºC) | | | | 1500 | |
| Elongation (%) | | | | | 16-33 | |
| Repeatedly Bend Frequency(F/R) 20ºC | | | | 7-12 | |
| Continuous Service Time under 1350 ºC | | | More than 60 hours |
| | | | | | | |
| Micrographic Structure | | | | Ferrite | |
| The relationship between the maximum operating temperature and the
furnace atmosphere |
| Furnace | | Dry Air | | Humid Air | | hydrogen-argon | Argon | Decomposition |
| atmosphere | | | | | | gas | | | | ammonia gas |
| Temp(ºC) | | 1400 | | 1200 | | 1400 | | 950 | 1200 |
User Manual
1.Rated Voltage: 220V/380V
2. The installation process to avoid knocking, to avoid the damp,
hand-held stove wire, they should wear gloves. Wire should be
installed after the furnace has remained flat, and prevent surface
scratches, dirt, corrosion, or improper installation, by affecting
the life of
3. In the rated voltage to use. In strong reducing atmosphere, acid
atmosphere, an atmosphere of high humidity will affect the use of
life;
4.Temperature before use should be in dry non-corrosive atmosphere,
about 1000 ºC spend a few hours, so that furnace wire protective film formed on
the surface after normal use, so that can guarantee the normal life
of furnace wire;
5.Furnace installation should ensure that the insulated wire good
power to avoid touching furnace after the wire, guard against
electric shock or burns.
1Cr13Al4, 0Cr25Al5, 0Cr23Al5, 0Cr21Al6, 0Cr21Al4, 0Cr21Al6Nb,
0Cr27Al7Mo2 is one kind of normal material of Fe-Cr-Al alloy.
FeCrAl alloy has the characteristic of high resistivity,low
temperature resistance coefficient,high operating
temperature,goodanti-oxidation and anti-corrosion under high
temperature.
It is widely used in industrial furnace, household appliances,
industry furnace, metallurgy, machinery, aircraft, automotive,
and other industries producing heating elements and resistance
elements.
| Alloy Nomenclature Performance | 1Cr13AL4 | 0Cr25Al5 | 0Cr21AL6 | 0Cr23Al5 | 0Cr21Al4 | 0Cr21Al6Nb | 0Cr27Al7Mo2 |
| 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 |
| Main Chemical composition | 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(ºC) | 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 |
