Resistance heating strip used for electric heating elements

Product Description

CrAlNb21/6/0.5 resistance heating strips used for manufacturing of electric heating elements


Resistohm 145 or FeCrAl 145 is a ferritic alloy of the FeCrAl family, which can be used up to 1300°C in case of big diameters.  
Resistohm 145 or FeCrAl 145 can be used for resistances in electric furnaces for ceramic, chemical and metallurgic industries, and for all applications where it is necessary to apply very high temperature of use. Life time of Resistohm 145 is better than those of NiCr in case of atmospheres containing sulfur and particularly if they are oxidizing.  
The same material in China is 0Cr21Al6Nb which with the same resistivity of 1.45μΩ/m at 20ºC.
Resistance heating strip for furnace heating elements and other heat-generating applications. The strip is normally delivered in cold-rolled condition with ground surface.

Characters:
Hardness: Soft, Half hard, hard
Standard: ASTM B603, DIN 17470, TOCT 10994, JIS C2520, GB/T1234
Has been used extensively as heating elements in industrial furnaces and electrical kilns.
Has less hot strength than Tophet alloys but much higher melting point.

We also produce below grades:

Alloy 750, Alferon 902, Alchrome 750, Resistohm 125, Aluchrom, 750 Alloy, Stablohm 750

A1, Alloy 875, Resistohm 145, Aluchrom 0, Alchrome 875, MWS-875, Stablohm 875, KAF, AF, Resistohm Y, Aluchrom Y, Alloy 837, AF KAPM KAPM, Alloy 875 PM, APM

D, Alloy 815, Alchrome DK, Alferon 901, Resistohm 135, Aluchrom S, Stablohm 812
 

Chemical Composition and Main Property of Fe-Cr-Al Resistance Alloy
Properties \ Grade		1Cr13Al4	0Cr25Al5	0Cr21Al6	0Cr23Al5	0Cr21Al4	0Cr21Al6Nb	0Cr27Al7Mo2
Main Chemical Composition (%)	Cr	12.0-15.0	23.0-26.0	19.0-22.0	22.5-24.5	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	4.2-5.0	3.0-4.2	5.0-7.0	6.0-7.0
	Re	opportune	opportune	opportune	opportune	opportune	opportune	opportune
	Fe	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.
							Nb0.5	Mo1.8-2.2
Max Continuous Service Temperature(oC)		950	1250	1250	1250	1100	1350	1400
Resisivity 20oC (Ωmm2/m)		1.25 ±0.08	1.42 ±0.06	1.42 ±0.07	1.35 ±0.07	1.23 ±0.07	1.45 ±0.07	1.53 ±0.07
Density(g/cm3)		7.4	7.1	7.16	7.25	7.35	7.1	7.1
Thermal Conductivity		52.7	46.1	63.2	60.2	46.9	46.1	45.2
(KJ/m@h@oC)
Coefficient of Thermal Expansion(α×10-6/oC)		15.4	16	14.7	15	13.5	16	16
Approximate Melting Point( 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(%)		>16	>12	>12	>12	>12	>12	>10
Section Variation		65-75	60-75	65-75	65-75	65-75	65-75	65-75
Shrink Rate (%)
Repeatedly Bend 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		no	≥80/1300	≥80/1300	≥80/1300	≥80/1250	≥50/1350	≥50/1350
Micrographic Structure		Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Magnetic Property		Magnetic	Magnetic	Magnetic	Magnetic	Magnetic	Magnetic	Magnetic