Heat-resisting alloy with magnesium and calcium

Abstract

A heat-resisting weldable alloy consisting essentially of, by weight percent, 01. to 0.4 aluminum, 0.001 to 0.008 calcium, 0.002 to 0.1 magnesium, 0 to 0.08 carbon, 0 to 1 manganese, 0 to 0.002 sulfur, 0 to 1 silicon, 0 to 0.75 copper, 0 to 0.3 phosphorus, 18 to 22 nickel, 18 to 22 chromium, and the balance iron and incidental impurities.

We claim:  
     
         1 . A heat-resisting weldable alloy consisting essentially of by weight percent, about 0.1 to 0.4 aluminum, 0.001 to 0.008 calcium, 0.002 to 0.1 magnesium, 0 to 0.08 carbon, 0 to 1 manganese, 18 to 22 nickel, 18 to 22 chromium, and the balance iron and incidental impurities.  
     
     
         2 . The alloy of  claim 1  including 0.15 to 0.25 aluminum.  
     
     
         3 . The alloy of  claim 1  including 0.002 to 0.006 calcium.  
     
     
         4 . The alloy of  claim 1  including 0.002 to 0.006 magnesium.  
     
     
         5 . The alloy of  claim 1  including 0.003 to 0.10 in total of calcium and magnesium.  
     
     
         6 . A heat-resisting weldable alloy consisting essentially of by weight percent, about 0.1 to 0.4 aluminum, 0.001 to 0.008 calcium, 0.002 to 0.1 magnesium, 0 to 0.08 carbon, 0 to 1 manganese, 0 to 0.002 sulfur, 0 to 1 silicon, 0 to 0.75 copper, 0 to 0.03 phosphorous, 18 to 22 nickel, 18 to 22 chromium, and the balance iron and incidental impurities.  
     
     
         7 . The alloy of  claim 6  including 0.15 to 0.25 aluminum.  
     
     
         8 . The alloy of  claim 6  including 0.002 to 0.006 calcium.  
     
     
         9 . The alloy of  claim 6  including 0.002 to 0.006 magnesium.  
     
     
         10 . The alloy of  claim 6  including 0.003 to 0.10 in total of calcium and magnesium.