High Temperature Fecral Alloy Electric Resistance Heating Element Coil Wire

Alloy Nomenclature Performance

1Cr13Al4
0Cr25Al5
0Cr21Al6
0Cr23Al5
0Cr21Al4
0Cr21Al6Nb	0Cr27Al7Mo2
Chemical Compostion(％）
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

Re
opportune
opportune
opportune
opportune
opportune
opportune	opportune

Fe
Rest
Rest
Rest
Rest
Rest
Rest	Rest
Max. continuous service temp. of element(°C)

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

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

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