0cr25al5 FeCrAl alloy electric heating resistance wire ferro chrome

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/m*h*℃)
 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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