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 |
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 |
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
|
650 |
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)
|
7.40 |
7.10 |
7.16 |
7.25 |
7.35 |
7.10 |
7.10 |
Thermal conductivity
(KJ/m·h·oC)
|
52.7 |
46.1 |
63.2 |
60.2 |
46.9 |
46.1 |
45.2 |
Coefficient of lines expansion
(α×10-6/oC)
|
15.4 |
16.0 |
14.7 |
15.0 |
13.5 |
16.0 |
16.0 |
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 |
Micrographic
structure
|
Ferrite |
Ferrite |
Ferrite |
Ferrite |
Ferrite |
Ferrite |
Ferrite |
Magnetic
properties
|
Magnetic |
Magnetic |
Magnetic |
Magnetic |
Magnetic |
Magnetic |
Magnetic |
