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Alloy 875 Magnetic Round Fecral Wire Good Form Stability For
Precision Resistor
General Description
Fe-Cr-Al alloy wires are made of iron chromium aluminum base alloys
containing small amounts of reactive elements such as yttrium and
zirconium and produced by smelting, steel rolling, forging,
annealing, drawing, surface treatment, resistance control test,
etc.
The high aluminum content, in combination with the high chromium
content let the scaling temperature can reach to 1425ºC (2600ºF);
Fe-Cr-Al wire was shaped by means of high speed automatic cooling
machine of which the power capacity is controlled by computer, they
are available as wire and ribbon(strip).
FeCrAl Electrictrical Resistance Heating alloys with high
electrical resistivity, temperature coefficient of resistance is
small, high operating temperature. good corrosion resistance under
high temperature, and particularly suitable for use in a gas
containing sulfur and sulfides, low price, it is widely used in
industrial electric furnace, household appliances, far infrared
device ideal heating material.
FeCrAl type:1Cr13AI4, 0Cr21AI4, 0Cr21AI6, 0Cr25AI5, 0Cr21AI6 Nb,
0Cr27AI7Mo2 etc.Series electric flat belt, electric fire wire
Application
Our products (FeCrAl) high resistance electric heating wire
materials are salable and widely used for making heating equipment
like industrial furnace, civil heating appliance, various
electrical resistors and locomotive braking resistor, infrared
equipment, liquefied gas infrared heat-resisting net, different
kinds of igniting and radiating electrodes and voltage-regulating
resistors for motors and so on in Metallurgical machinery, medical,
chemical, ceramics, electronics, electrical appliances, glass and
other civil or industrial fields.
Product forms and size range
Round wire
0.010-12 mm (0.00039-0.472 inch) other sizes are available on
request.
Ribbon (flat wire)
Thickness: 0.023-0.8 mm (0.0009-0.031 inch)
Width: 0.038-4 mm (0.0015-0.157 inch)
Width/thickness ratio max 60, depending on alloy and tolerance
Other sizes are available on request.
Resistance electric heating wire has strong antioxidant properties,
but a variety of gases in furnaces such as air, carbon, sulfur,
hydrogen and nitrogen atmosphere, still have a certain impact on
it.
Although these heating wires all have had antioxidant treatment,
the transportation, winding, installation and other process will
cause damage to a certain extent and reduce its service life.
In order to extend the service life, customers need to do pre
oxidation treatment before using. The method is to heat alloy
elements which have installed completely in the dry air to the
temperature (lower 100-200C than its maximum using temperature),
heat preservation for 5 to 10 hours, then cooling slowly with
furnace.
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