Iron-nickel-chromium-silicon alloy

Abstract

The invention relates to an iron-nickel-chromium-silicon alloy comprising (in wt.-%) 19 to 34% or 42 to 87% nickel, 12 to 26% chromium, 0.75 to 2.5% silicon, and additives of 0.05% to 1% Al, 0.01 to 1% Mn, 0.01 to 0.26% lanthanum, 0.0005 to 0.05% magnesium, 0.04 to 0.14% carbon, 0.02 to 0.14% nitrogen, and further comprising 0.0005 to 0.07% Ca, 0.002 to 0.020% P, a maximum of 0.01% sulfur, a maximum of 0.005% B, the remainder comprising iron and the usual process-related impurities

1 . Iron-nickel-chromium-silicon alloy, comprising, in wt. %, 19 to 34% or 42 to 87% nickel, 12 to 26% chromium, 0.75 to 2.5% silicon, 0.05 to 1% AI, 0.01 to 1% Mn, 0.01 to 0.26% lanthanum, 0.0005 to 0.05% magnesium, 0.04 to 0.14% carbon, 0.02 to 0.14% nitrogen, 0.0005 to 0.07% Ca, 0.002 to 0.020% P, max. 0.01% sulfur, max. 0.005% B, iron and usual process-related impurities. 
   
   
       2 . Iron-nickel-chromium-silicon alloy in accordance with  claim 1 , wherein, by weight, the nickel content is max. 83%, the chromium is min. 14% the silicon content is min. 1.0% and the lanthanum content is min. 0.02%. 
   
   
       3 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 19 to 25%, by weight. 
   
   
       4 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 25 to 34%, by weight. 
   
   
       5 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 42 to 44%, by weight. 
   
   
       6 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 44 to 52%, by weight. 
   
   
       7 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 52 to 57%, by weight. 
   
   
       8 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content of 57 to 65%, by weight. 
   
   
       9 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 65 to 75%, by weight. 
   
   
       10 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 75 to 83%, by weight. 
   
   
       11 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 19 to 22%, by weight. 
   
   
       12 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 23 to 25%, by weight. 
   
   
       13 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 25 to 28%, by weight. 
   
   
       14 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 28 to 31%, by weight. 
   
   
       15 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 31 to 34%, by weight. 
   
   
       16 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 44 to 48%, by weight. 
   
   
       17 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 48 to 52%, by weight. 
   
   
       18 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 57 to 61%, by weight. 
   
   
       19 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 61 to 65%, by weight. 
   
   
       20 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 65 to 70%, by weight. 
   
   
       21 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 70 to 75%, by weight. 
   
   
       22 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 75 to 79%, by weight. 
   
   
       23 . Alloy in accordance with  claim 1  or  2 , wherein the nickel content is 79 to 83%, by weight. 
   
   
       24 . Alloy in accordance with  claim 1  or  2 , wherein the chromium content is 14 to 18%, by weight. 
   
   
       25 . Alloy in accordance with  claim 1  or  2 , wherein the chromium content is 18 to 21%, by weight. 
   
   
       26 . Alloy in accordance with  claim 1  or  2 , wherein the chromium content is 20 to 26%, by weight. 
   
   
       27 . Alloy in accordance with  claim 1  or  2 , wherein the chromium content is 21 to 24%, by weight. 
   
   
       28 . Alloy in accordance with  claim 1  or  2 , wherein the chromium content is 20 to 23%, by weight. 
   
   
       29 . Alloy in accordance with  claim 1  or  2 , wherein the chromium content is 23 to 26%, by weight. 
   
   
       30 . Alloy in accordance with  claim 1  or  2 , wherein the silicon content is 1.5 to 2.5%, by weight. 
   
   
       31 . Alloy in accordance with  claim 1  or  2 , wherein the silicon content is 1.0 to 1.5%, by weight. 
   
   
       32 . Alloy in accordance with  claim 1  or  2 , wherein the silicon content is 1.5 to 2.0%, by weight. 
   
   
       33 . Alloy in accordance with  claim 1  or  2 , wherein the silicon content is 1.7 to 2.5%, by weight. 
   
   
       34 . Alloy in accordance with  claim 1  or  2 , wherein the silicon content is 1.2 to 1.7%, by weight. 
   
   
       35 . Alloy in accordance with  claim 1  or  2 , wherein the silicon content is 1.7 to 2.2%, by weight. 
   
   
       36 . Alloy in accordance with  claim 1  or  2 , wherein the silicon content is 2.0 to 2.5%, by weight. 
   
   
       37 . Alloy in accordance with  claim 1  or  2 , wherein the aluminum content is 0.1 to 0.7%, by weight. 
   
   
       38 . Alloy in accordance with  claim 1  or  2 , wherein the manganese content is 0.1 to 0.7%, by weight. 
   
   
       39 . Alloy in accordance with  claim 1  or  2 , wherein the lanthanum content is 0.02 to 0.2%, by weight. 
   
   
       40 . Alloy in accordance with  claim 1  or  2 , wherein the lanthanum content is 0.02 to 0.15%, by weight. 
   
   
       41 . Alloy in accordance with  claim 1  or  2 , wherein the lanthanum content is 0.04 to 0.15%, by weight. 
   
   
       42 . Alloy in accordance with  claim 1  or  2 , wherein the nitrogen content is 0.02 to 0.10%, by weight. 
   
   
       43 . Alloy in accordance with  claim 1  or  2 , wherein the nitrogen content is 0.03 to 0.09%, by weight. 
   
   
       44 . Alloy in accordance with  claim 1  or  2 , wherein the nitrogen content is 0.05 to 0.09%, by weight. 
   
   
       45 . Alloy in accordance with  claim 1  or  2 , wherein the carbon content is 0.04 to 0.10%, by weight. 
   
   
       46 . Alloy in accordance with  claim 1  or  2 , wherein the magnesium content is 0.001 to 0.05%, by weight. 
   
   
       47 . Alloy in accordance with  claim 1  or  2 , wherein the magnesium content is 0.008 to 0.05%, by weight. 
   
   
       48 . Alloy in accordance with  claim 1  or  2 , wherein maximum content of sulfur is 0.005%, by weight, and maximum content of the boron is 0.003% B, by weight. 
   
   
       49 . Alloy in accordance with  claim 1  or  2 , wherein the Ca content is 0.01 to 0.05% Ca, by weight. 
   
   
       50 . Alloy in accordance with  claim 1  or  2 , wherein the Ca content is 0.001 to 0.05% Ca, by weight. 
   
   
       51 . Alloy in accordance with  claim 1  or  2 , further comprising at least one of the elements Ce, Y, Zr, Hf, Ti, each with a content of 0.01 to 0.3%, by weight. 
   
   
       52 . Alloy in accordance with  claim 51 , wherein the sum PwE=1.43·X Ce +1.49·X La +2.25·X Y +2.19·X Zr +1.12·X Hf +4.18·X Ti ≦0.38, PwE being the potential of the effective elements. 
   
   
       53 . Alloy in accordance with  claim 1  or  2 , further comprising at least one of the elements La, Ce, Y, Zr, Hf, Ti, each with a content of 0.01 to 0.2%, by weight, and wherein the sum PwE=1.43·X Ce +1.49·X La +2.25·X Y +2.19·X Zr +1.12·X Hf +4.18·X Ti ≦0.36, PwE being the potential of the effective elements. 
   
   
       54 . Alloy in accordance with  claim 1  or  2 , further comprising at least one of the elements La, Ce, Y, Zr, Hf, Ti, each with a content of 0.02 to 0.15%, by weight, and wherein the sum PwE=1.43·X Ce +1.49·X La +2.25·X Y +2.19·X Zr +1.12·X Hf +4.18·X Ti ≦0.36, PwE being the potential of the effective elements. 
   
   
       55 . Alloy in accordance with  claim 1  or  2 , wherein the phosphorus content is 0.005 to 0.020%. 
   
   
       56 . Alloy in accordance with  claim 1  or  2 , further comprising at least one of the elements Mo, W, V, Nb, Ta, Co, each with a content of 0.01 to 1.0%, by weight. 
   
   
       57 . Alloy in accordance with  claim 1  or  2 , further comprising at least one of the elements Mo, W, V, Nb, Ta, Co, each with a content of 0.01 to 0.2%, by weight. 
   
   
       58 . Alloy in accordance with  claim 1  or  2 , further comprising at least one of the elements Mo, W, V, Nb, Ta, Co, each with a content of 0.01 to 0.06%, by weight. 
   
   
       59 . Alloy in accordance with  claim 1  or  2 , wherein the impurities comprise, by weight, max. 1.0% Cu, max. 0.002% Pb, max. 0.002% Zn, max. 0.002% Sn. 
   
   
       60 . An electrical heating element, comprising the alloy of  claim 1  or  2 . 
   
   
       61 . A tubular heating body, comprising the alloy of  claim 1  or  2 . 
   
   
       62 . A furnace, comprising the alloy of  claim 1  or  2 .