High temperature 0Cr23Al5 ferro chrome FeCrAl alloy electric resistance heat 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

--
--
--
--
--
Nb0.5	Mo1.8-2.2
Max. continuous service temp. of element(%)
950
1250
1250
1250
1100
1350	1400
Resistivity at 20℃(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/mh℃)
52.7
46.1
63.2
60.2
46.9
46.1	--
Coefficient of lines expansion(α*10-6/℃)
15.4
16
14.7
15
13.5
16	16
Melting point approx.(℃)
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 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/℃)
--
≥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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