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 20?/SPAN>C
 (μΩ?SPAN lang=EN-US>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?/SPAN>h?C)

52.7

46.1

63.2

60.2

46.9

46.1

45.2

Coefficient of lines expansion
(α?SPAN lang=EN-US>10^-6/?)

15.4

16.0

14.7

15.0

13.5

16.0

16.0

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

Micrographic 
structure

Ferrite

Ferrite

Ferrite

Ferrite

Ferrite

Ferrite

Ferrite

Magnetic 
properties

Magnetic

Magnetic

Magnetic

Magnetic

Magnetic

Magnetic

Magnetic