Electric heating alloy resistance wire coil DescriptionFeCrAl
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). 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. Features and advantages1. High using
temperature, the maximum using temperature can reach 1400C
(0Cr21A16Nb, 0Cr27A17Mo2, etc.)2. Low temperature coefficient of
resistance3. Lower thermal expansion coefficient than the Ni-base
super-alloys.4. High electrical resistivity5. Good corrosion
resistance under high temperature, especially under the atmosphere
containing sulfides 6. High surface load7. Creep-resistant 8. Lower
raw-material cost, Lower density and cheaper price compared with
Nichrome wire.9. Superior oxidation resistance at 800-1300ºC10.
Long service life 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.Main characteristics of Fe-Cr-Al- high
resistances electric heating alloysBrand
name1Cr13Al40Cr25Al50Cr21Al60Cr23Al50Cr21Al40Cr21Al6Nb0Cr27Al7Mo2Main
chemical
composition%Cr12.0-15.023.0-26.019.0-22.022.5-24.518.0-21.021.0-23.026.5-27.8Al4.0-6.04.5-6.55.0-7.04.2-5.03.0-4.25.0-7.06.0-7.0REopportuneamountopportuneamountopportuneamountopportuneamountopportuneamountopportuneamountopportuneamountFeRestRestRestRestRestRestRest Nb0.5Mo1.8-2.2Max.continuousservice
temp.ofelement
(ºC)950125012501250110013501400ResistivityμΩ.m,20ºC1.251.421.421.351.231.451.53Density(g/cm3
)7.47.107.167.257.357.107.10ThermalconductivityKJ/m.h.ºC52.746.163.260.246.946.145.2Coefficient
oflines expansionα×10-6/ºC15.416.014.715.013.516.016.0Melting
pointºC1450150015001500150015101520Tensile
strengthMpa580-680630-780630-780630-780600-700650-800680-830Elongation
atrupture %>16>12>12>12>12>12>10Variation
ofarea %65-7560-7565-7565-7565-7565-7565-75Repeat
bendingfrequency(F/R)>5>5>5>5>5>5>5Hardness(H.B.)200-260200-260200-260200-260200-260200-260200-260MicrographicstructureFerriteFerriteFerriteFerriteFerriteFerriteFerriteMagneticpropertiesMagneticMagneticMagneticMagneticMagneticMagneticMagnetic
Package: Goods are supply in coil or on spool, Carton
or wooden case in outside as demanded. Shipping: By vessel or
by train from any Chinese port, Samples can be delivered by
International express. Package of electric resistance heating
wireOur Service: 1. Timely response, Timely response to
your inquiry, multiple choice recommendations based on your demand,
quickly respond mails and provide solutions. 2. Sample
evaluationSample and trial order is accepted for the quality
evaluation. 3. Strict quality controlArrange production on
time and control quality strictly. 4. Shorter delivery
time.Book the earliest vessel or plane to guarantee
the delivery time. 5. Professional ServicesProvide all the
detailed news and pictures from order to delivery;Offer relative
export documents and original certificate if needed;Warm and
considerable after-sale service Company Information DKJL
refractories exporting company is one of the most professional
suppliers of refractories in Beijjing, China. Our main products are
refractory and
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