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FE-NI ALLOY HAVING HIGH STRENGTH AND LOW THERMAL EXPANSION, A SHADOW MASK MADE OF THE ALLOY, A BRAUN TUBE WITH THE SHADOW MASK, A LEAD FRAME MADE OF THE ALLOY AND A SEMICONDUCTOR ELEMENT WITH LEAD FRAME

  • US 6,592,810 B2
  • Filed: 03/19/2001
  • Issued: 07/15/2003
  • Est. Priority Date: 03/17/2000
  • Status: Expired due to Fees
First Claim
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1. An Fe—

  • Ni alloy having high strength and low thermal expansion, consisting essentially of, by mass percent, 30 to 50% of Ni, 0.005 to 0.1% of Nb, less than 0.01% of C, 0.002 to 0.02% of N, and the balance of Fe and inevitable impurities, wherein the following equation is fulfilled;

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