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Material Data Sheet

material no.: 1.3981
UNS no.: K94610
designation: Alloy K

CHEMICAL REQUIREMENTS IN (%)

ASTM F 15 SEW 385 DIN 17745
C ≤ 0,04 < 0,05 ≤ 0,05
Si ≤ 0,20 < 0,30 ≤ 0,30
Mn ≤ 0,50 < 0,50 ≤ 0,50
Co ≈ 17 17,0 - 18,0 16,0 - 18,0
Ni ≈ 29 28,0 - 30,0 28,0 - 30,0
Fe ≈ 53 Bal.
Al ≤ 0,10
Mg ≤ 0,10
Zr ≤ 0,10
Ti ≤ 0,10
Al + Mg + Zr + Ti ≤ 0,30
Cu ≤ 0,20
Cr ≤ 0,20
Cr ≤ 0,20
Mo ≤ 0,20

MECHANICAL PROPERTIES

annealed
Rm (MPa)
 ≤ 585 440 - 640
A (%) ≥ 25

AVERAGE LINEAR COEFFICIENT OF THERMAL EXPANSION

α 10-6/K 10-6/K 10-6/K
20°C - 100°C 6,3 +/- 0,3
20°C - 150°C 6,0 +/- 0,3
20°C - 200°C 5,8 +/- 0,3
20°C - 300°C 5,4 +/- 0,3
20°C - 400°C 5,1 +/- 0,3 4,6 - 5,6
20°C - 500°C 6,4 +/- 0,3
20°C - 600°C 8,0 +/- 0,3
30°C - 400°C 4,6 - 5,2
30°C - 450°C 5,1 - 5,5

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