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

All information are supplied without liability.