US2005274438A1PendingUtilityA1

Alloys having low coefficient of thermal expansion and methods of making same

38
Individually held — no corporate assignee on recordPriority: Jun 9, 2004Filed: Jun 9, 2004Published: Dec 15, 2005
Est. expiryJun 9, 2024(expired)· nominal 20-yr term from priority
Inventors:David HasekThomas R. Parayil
C22C 38/08
38
PatentIndex Score
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Claims

Abstract

The present disclosure provides alloys having an ultra-low coefficient of thermal expansion in the range of 60° F. to 80° F. The alloys have coefficient of thermal expansion no greater than 0.35×10 −6 ° F. −1 in the range of 60° F. to 80° F. Methods of making such alloys also are provided, as well articles of manufacture including such alloys and methods of making such articles.

Claims

exact text as granted — not AI-modified
1 . A material comprising iron and nickel and having a coefficient of thermal expansion no greater than 0.35×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       2 . The material of  claim 1 , wherein the material has a coefficient of thermal expansion less than 0.25×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       3 . The material of  claim 1 , wherein the material has a coefficient of thermal expansion less than 0.20×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       4 . The material of any of claims  1  through  3 , wherein the material is a temper rolled material.  
   
   
       5 . The material of any of claims  1  through  3 , wherein the material is a temper rolled and stretched material.  
   
   
       6 . The material of any of claims  1  through  5 , wherein the material comprises 35.5 to 36.5 weight percent iron.  
   
   
       7 . The material of  claim 1 , wherein the material consists essentially of iron, nickel and incidental impurities.  
   
   
       8 . The material of  claim 1 , wherein the material further comprises iron.  
   
   
       9 . The material of  claim 1 , wherein the material comprises 61.5 to 64.5 weight percent iron.  
   
   
       10 . The material of  claim 1 , wherein the material comprises 35.5 to 36.5 weight percent nickel and 61.5 to 64.5 weight percent iron.  
   
   
       11 . The material of  claim 10 , wherein the material has a coefficient of thermal expansion less than 0.20×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       12 . The material of  claim 1 , wherein the material comprises about 36 weight percent nickel.  
   
   
       13 . The material of  claim 12 , wherein the material comprises about 64 weight percent iron.  
   
   
       14 . The material of  claim 13 , wherein the material has a coefficient of thermal expansion less than 0.20×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       15 . The material of  claim 1 , wherein the material further comprises, in weight percentages: 0 to 0.50 cobalt; 0 to 1.00 manganese; 0 to 0.40 silicon; 0 to 0.15 carbon; 0 to 0.25 chromium; 0 to 0.020 phosphorus; 0 to 0.020 sulfur; 0 to 0.30 selenium; 0 to 0.10 aluminum; 0 to 0.10 magnesium; 0 to 0.10 titanium; and 0 to 0.10 zirconium.  
   
   
       16 . The material of  claim 15 , wherein the material has a coefficient of thermal expansion less than 0.20×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       17 . The material of  claim 1 , wherein the material has a chemistry satisfying at least one of UNS K93603 and UNS K93050.  
   
   
       18 . The material of  claim 17 , wherein the material has a coefficient of thermal expansion less than 0.20×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       19 . A material having a coefficient of thermal expansion no greater than 0.35×10 −6 ° F. −1  in the range of 60 to 80° F. and comprising, in weight percentages: 35.5 to 36.5 nickel; iron; 0 to 0.50 cobalt; 0 to 1.00 manganese; 0 to 0.40 silicon; 0 to 0.15 carbon; 0 to 0.25 chromium; 0 to 0.020 phosphorus; 0 to 0.020 sulfur; 0 to 0.30 selenium; 0 to 0.10 aluminum; 0 to 0.10 magnesium; 0 to 0.10 titanium; and 0 to 0.10 zirconium.  
   
   
       20 . The material of  claim 19 , wherein the material has a coefficient of thermal expansion less than 0.25×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       21 . The material of  claim 19 , wherein material has a coefficient of thermal expansion less than 0.20×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       22 . The material of  claim 19 , wherein the material is a temper rolled material.  
   
   
       23 . The material of  claim 19 , wherein the material is a temper rolled and stretched material.  
   
   
       24 . The material of  claim 19 , wherein the material consists essentially of, in weight percentages: 35.5 to 36.5 nickel; iron; 0 to 0.50 cobalt; 0 to 1.00 manganese; 0 to 0.40 silicon; 0 to 0.15 carbon; 0 to 0.25 chromium; 0 to 0.020 phosphorus; 0 to 0.020 sulfur; 0 to 0.30 selenium; 0 to 0.10 aluminum; 0 to 0.10 magnesium; 0 to 0.10 titanium; and 0 to 0.10 zirconium.  
   
   
       25 . The material of  claim 19 , wherein the material has a composition that satisfies at least one of UNS K93603 and UNS K930505.  
   
   
       26 . A method of making a material, the method comprising temper rolling an alloy comprising nickel and iron to a reduction of at least 10%, wherein the resulting material has a coefficient of thermal expansion no greater than 0.35×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       27 . The method of  claim 26 , wherein the method comprises temper rolling the alloy to a reduction of at least 20%.  
   
   
       28 . The method of  claim 26 , wherein the method comprises temper rolling the alloy to a reduction of at least 10% and no greater than 40%.  
   
   
       29 . The method of  claim 26 , wherein the resulting material has a coefficient of thermal expansion less than 0.25×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       30 . The method of  claim 26 , wherein the resulting material has a coefficient of thermal expansion less than 0.20×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       31 . The method of  claim 26 , wherein the alloy consists essentially of iron, nickel and incidental impurities.  
   
   
       32 . The method of  claim 26 , wherein the alloy comprises 35.5 to 36.5 weight percent nickel.  
   
   
       33 . The method of  claim 26 , wherein the alloy consists essentially of 35.5 to 36.5 weight percent nickel, iron, and incidental impurities.  
   
   
       34 . The method of  claim 26 , wherein the alloy comprises about 36 weight percent nickel.  
   
   
       35 . The method of  claim 26 , wherein the alloy comprises, in weight percentages: 35.5 to 36.5 nickel; iron; 0 to 0.50 cobalt; 0 to 1.00 manganese; 0 to 0.40 silicon; 0 to 0.15 carbon; 0 to 0.25 chromium; 0 to 0.020 phosphorus; 0 to 0.020 sulfur; 0 to 0.30 selenium; 0 to 0.10 aluminum; 0 to 0.10 magnesium; 0 to 0.10 titanium; and 0 to 0.10 zirconium.  
   
   
       36 . The method of  claim 26 , wherein the alloy consists essentially of, in weight percentages: 35.5 to 36.5 nickel; iron; 0 to 0.50 cobalt; 0 to 1.00 manganese; 0 to 0.40 silicon; 0 to 0.15 carbon; 0 to 0.25 chromium; 0 to 0.020 phosphorus; 0 to 0.020 sulfur; 0 to 0.30 selenium; 0 to 0.10 aluminum; 0 to 0.10 magnesium; 0 to 0.10 titanium; and 0 to 0.10 zirconium.  
   
   
       37 . The method of  claim 36 , wherein the material has a coefficient of thermal expansion less than 0.25×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       38 . The method of  claim 26 , wherein the alloy has a composition satisfying at least one of UNS K93603 and UNS K93050.  
   
   
       39 . The method of  claim 26  wherein the method further comprises, prior to temper rolling the alloy: 
 cold rolling the alloy; and    annealing the alloy.    
   
   
       40 . The method of  claim 39 , wherein annealing the alloy comprises heating the alloy at a temperature in the range of 1500° F. to 1600° F.  
   
   
       41 . The method of  claim 39 , wherein annealing the alloy comprises heating the alloy at 1500° F.±25° F.  
   
   
       42 . The method of  claim 39 , wherein annealing the alloy comprises heating the alloy at about 1500° F.  
   
   
       43 . An article of manufacture including a material comprising 35.5 to 36.5 weight percent nickel and having a coefficient of thermal expansion no greater than 0.35×10 −6 ° F. −1  in the range of 60 to 80° F.  
   
   
       44 . The article of manufacture of  claim 43 , wherein the material further comprises iron.  
   
   
       45 . The article of manufacture of  claim 43 , wherein the material consists essentially of iron, nickel and incidental impurities.  
   
   
       46 . The article of manufacture of  claim 43 , wherein the material is a temper rolled material.  
   
   
       47 . The article of manufacture of  claim 43 , wherein the material is a temper rolled and stretched material.  
   
   
       48 . The article of manufacture of  claim 43 , wherein the article is selected from the group consisting of a telescope, a camera, an optical device, a laser, a pipe, a cryogenic pipe, a telecommunications device, a mobile phone network filter, a cathode ray tube shadow mask part, a cathode ray tube frame part, a cathode ray tube gun part, a wave guide tube, a tank membrane, a tanker, a liquefied natural gas tanker, a mold plate for aircraft structural composite material fabrication, a bimetallic strip, and a thermostat.  
   
   
       49 . A method for making an article of manufacture, the method comprising: 
 providing a temper rolled material comprising 35.5 to 36.5 weight percent nickel and having a coefficient of thermal expansion no greater than 0.35×10 −6 ° F. −1 ; and    processing the material to form at least a part of the article of manufacture.    
   
   
       50 . A temper rolled alloy consisting essentially of 35.5 to 36.5 weight percent nickel, iron and incidental impurities, wherein the alloy has a coefficient of thermal expansion less than 0.20×10 6 ° F. −1  in the range of 60 to 80° F.

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