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>> Fe-Cr-Al,Ni-Cr,Ni-Cr-Fe ribbon with their specification and characteristics
>> Fe-Cr-Al,Ni-Cr,Ni-Cr-Fe ribbon with their specification and characterristics
>> The rectification coefficient in temperature for high resistance and electric heating     alloys

Main characteristics of Fe-Cr-Al- high resistances and electric heating alloy

1Cr13Al4
0Cr25Al5
0Cr21Al6
0Cr23Al5
0Cr21Al4
0Cr21Al6Nb
0Cr27Al7Mo2

Main
chem-
ical
Comp-
osit-
ion

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
oppor-
tune
amount
oppor-
tune
amount
oppor-
tune
amount
oppor-
tune
amount
oppor-
tune
amount
oppor-
tune
amount
oppor-
tune
amount
Fe
Rest
Rest
Rest
Rest
Rest
Rest
Rest
Nb0.5
Mo1.8-2.2
Max.continuous
service temp.of
element ()
950
1250
1250
1250
1100
1350
1400
Resistivity
̦.m,20
1.25
1.42
1.42
1.35
1.23
1.45
1.53
Density
(g/cm3 )
7.4
7.10
7.16
7.25
7.35
7.10
7.10
Thermal
conductivity

KJ/m.h.
52.7
46.1
63.2
60.2
46.9
46.1
45.2
Coefficient of
lines expansion

10-6/
15.4
16.0
14.7
15.0
13.5
16.0
16.0
Melting point
1450
1500
1500
1500
1500
1510
1520
Tensile strength
Mpa
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
Micrographic
structure
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Magnetic
properties
Magnetic
Magnetic
Magnetic
Magnetic
Magnetic
Magnetic Magnetic

 

 


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