Iron-nickle alloy

Abstract

Disclosed is an iron-nickel alloy having the following composition, in % by mass: C 0.05 to 0.5%, Cr 0.2 to 2.0%, Ni 33 to 42%, Mn<0.1%, Si<0.1%, Mo 1.5 to 4.0%, Nb 0.01 to 0.5%, Al 0.1 to 0.8%, Mg 0.001 to 0.01%, V max. 0.1%, W 0.1 to 1.5%, Co max. 2.0%, the remainder Fe, and production-related impurities.

1 . Iron-nickel alloy comprising, in mass %:
 C 0.05 to 0.5%   Cr 0.2 to 2.0%   Ni 33 to 42%   Mn <0.1%   Si <0.1%   Mo 1.5 to 4.0%   Nb 0.01 to 0.5%   Al 10.1 to 0.8%   Mg 0.001 to 0.01%   V Max. 0.1%   W 0.1 to 1.5%   Co Max 2.0%   Fe Remainder and process-related impurities.   
     
     
         2 . Iron-nickel alloy in accordance with  claim 1 , comprising, having in mass %:
 C 0.1 to 0.4%   Cr 0.5 to 1.5%   Ni 34 to 40%   Mn <0.08%   Si <0.08%   Mo >2.0 to <3.5%   Nb 0.05 to 0.4%   Al 10.2 to 0.5%   Mg 0.001 to <0.01%   V Max. 0.1%   W 0.2 to <1.0%   Co 0 to 1.0%   Fe Remainder and process-related impurities.   
     
     
         3 . Iron-nickel alloy in accordance with  claim 1 , comprising, in mass %:
 C >0.15 to <0.4%   Cr 0.6 to max. 1.2%   Ni 35 to 40%   Mn <0.08%   Si <0.08%   Mo >2.0 to <3.0%   Nb 0.05 to 0.3%   Al >0.1 to <0.5%   Mg >0.001 to <0.01%   V Max. 0.1%   W 0.25 to 1.0%   Co 0 to max 0.5%   Fe Remainder and process-related impurities.   
     
     
         4 . Iron-nickel alloy in accordance with  claim 1 , wherein Ni is present, in mass %:
 35 to 38%.   
     
     
         5 . Iron-nickel alloy in accordance with  claim 1 , wherein Cr is present, in mass %:
 >0.6 to <1.2%.   
     
     
         6 . Iron-nickel alloy in accordance with  claim 1 , wherein Mo is present, in mass %:
 2.1 to 2.8%.   
     
     
         7 . Iron-nickel alloy in accordance with  claim 1 , wherein Al is present, in mass %:
 0.2 to 0.4%.   
     
     
         8 . Iron-nickel alloy in accordance with  claim 1 , wherein W is present, in mass %:
 >0.25 to <1.0%.   
     
     
         9 . Iron-nickel alloy in accordance with  claim 1 , further comprising at least one additive, present in mass %:
 Zr >0 to <0.2% and   B >0to 0.01%.   
     
     
         10 . Iron-nickel alloy in accordance with  claim 1 , wherein the sum, in mass %, of Mo+W is between 2.0 and 4.0%. 
     
     
         11 . Iron-nickel alloy in accordance with  claim 1 , wherein the sum, in mass %, of Mo+W is between 2.2 and 3.5%. 
     
     
         12 . Iron-nickel alloy in accordance with  claim 1 , wherein the sum, in mass %, of Cr+W is between 1.0 and 2.0%. 
     
     
         13 . Iron-nickel alloy in accordance with  claim 1 , wherein the sum, in mass %, of Si+Mn is # 0.2%. 
     
     
         14 . Iron-nickel alloy in accordance with  claim 13 , wherein the sum, in mass %, of Si+Mn is # 0.1%. 
     
     
         15 . Iron-nickel alloy in accordance with  claim 1 , wherein the ratio (Mo+W+Cr)/C is 13.5−15.5. 
     
     
         16 . Iron-nickel alloy in accordance with  claim 1 , wherein a preselected amount of W is substituted for a preselected amount of Mo. 
     
     
         17 . Iron-nickel alloy in accordance with  claim 1 , the iron-nickel alloy having a thermal expansion coefficient of <4×10 −6 /K, in the temperature range between 20 and 200° C. 
     
     
         18 . A method for producing a wire-shaped product from the iron-nickel alloy in accordance with  claim 1 , comprising providing a melt of the iron-nickel alloy of  claim 1 , casting the melt into blocks, rolling the blocks, whereby billets are formed, drawing and annealing the billets in alternating steps, whereby a wire-shaped product is formed, the wire-shaped product having a predetermined diameter, aluminizing the wire-shaped product, and drawing the wire-shaped product to predetermined final dimensions. 
     
     
         19 . Wire for power lines comprising the iron-nickel alloy of  claim 1 . 
     
     
         20 . Core wire for power lines comprising the iron-nickel alloy  claim 1 . 
     
     
         21 . Lead frames comprising the iron-nickel alloy of  claim 1 . 
     
     
         22 . Molding comprising the iron-nickel alloy of  claim 1 . 
     
     
         23 . Chip production components comprising the iron-nickel alloy of  claim 1 . 
     
     
         24 . A base material having a predetermined form selected from one of sheet, bar, wire, and strip comprising the iron-nickel alloy of  claim 1 . 
     
     
         25 . Iron-nickel alloy in accordance  claim 1 , the iron-nickel alloy having a thermal expansion coefficient of <3.5×10 −6 /K in the temperature range between 20 and 200° C. 
     
     
         26 . Carbon fiber molding comprising the iron-nickel alloy of  claim 1 .