Product Description
0cr21al4 is one kind of normal material of Fe-Cr-Al alloy.
FeCrAl alloy has the characteristic of high resistivity,low temperature resistance coefficient,high operating temperature,good anti-oxidation and anti-corrosion under high temperature.
It is widely used in industrial furnace, household appliances, industry furnace, metallurgy, machinery, aircraft, automotive, military and other industries producing heating elements and resistance elements.
Size dimension range:
Ribbons: 0.05*0.2-2.0*6.0mm
Wire: 0.01-10mm
Strip: 0.05*5.0-5.0*250mm
Bar:10-50mm
FeCrAl alloy series: OCr15Al5,1Cr13Al4, 0Cr21Al4, 0Cr21Al6, 0Cr23Al5, 0Cr25Al5, 0Cr21Al6Nb,0Cr27Al7Mo2, and etc.
| Alloy Nomenclature Performance |
1Cr13Al4 |
0Cr25Al5 |
0Cr21Al6 |
0Cr23Al5 |
0Cr21Al4 |
0Cr21Al6Nb |
0Cr27Al7Mo2 |
| Main Chemical composition |
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(°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(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/ 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 |
