METAL FOIL
The invention relates to a metal foil having (in weight %) Ni 74-90%, W 10-26%, and Al and/or Mg and/or B contents of Al >0-max. 0.02%, Mg >0-max. 0.025%, B>0-max. 0.005%.
1 . Metal foil comprising, by weight,
Ni 80-90%
W 10-20%
and at least one of Al, Mg or B in respective weight proportions,
Al 0.0001-0.02%
Mg 0.0001-0.015%
B 0.0001-0.005%.
2 . (canceled)
3 . Metal foil in accordance with claim 1 , wherein respective weight proportions of Ni and W are
Ni 83-88%
W 12-17%.
4 . Metal foil in accordance with claim 1 , wherein respective weight proportions of Ni and W are
Ni 85-87%
W 13-15%.
5 . (canceled)
6 . Metal foil in accordance with claim 1 , comprising at least one of Al or B in respective weight proportions
Al 0.0001-0.006%
B 0.0001-0.002%.
7 . Metal foil in accordance with claim 1 , wherein any content of the hereinbelow listed elements is limited as follows, by weight:
Cr max. 0.05%
Fe <0.1%
Co max. 0.05%
C max. 0.04%
Cu <0.05%
Mn <0.05%
Mo max. 0.05%
Nb max. 0.01%
P <0.004%
O <0.005%
S <0.004%
Si max. 0.05%
N <0.005%
Ti <0.01%.
8 . Metal foil in accordance with claim 1 , wherein any content of the hereinbelow listed elements is limited as follows, by weight:
Cr. <0.01%
Fe <0.05%
Co <0.05%
C <0.01%
Cu <0.03%
Mn <0.03%
Mo <0.03%
Nb <0.005%
P <0.003%
O <0.004%
S <0.0008%
Si <0.04%
N <0.004%
Ti <0.01%.
9 . Metal foil in accordance with claim 1 produced by a degree of cold forming >90%, followed by annealing at 700° C. to 1200° C.
10 . Metal foil in accordance with claim 1 , wherein surfaces of the foil have a static contact angle <80° that is measured with a mixture of deionized water and propionic acid in a ratio of 1:1.
11 . Metal foil in accordance with claim 1 , wherein surfaces of the foil have a static contact angle <75° that is measured with a mixture of deionized water and propionic acid in a ratio of 1:1.
12 . Metal foil in accordance with claim 1 , wherein surfaces of the foil have a static contact angle <70° that is measured with a mixture of deionized water and propionic acid in a ratio of 1:1.
13 . Metal foil in accordance with claim 1 produced in smelting quantities greater than one ton.
14 . A metal strip for epitactic coatings comprising a metal foil in accordance with claim 1 .