The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 1996
Filed:
Jun. 06, 1995
Daido Tokushuko Kabushiki Kaisha, Aichi-Prefecture, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A heat resisting alloy for use in exhaust valves and the like low in price and excellent in structural stability, high-temperature strength and hot workability, which consists essentially by weight percentage of C: 0.01.about.0.10%, Si.ltoreq.2.0%, Mn.ltoreq.2.0%, Cr: 14.about.20%, Nb+Ta: 0.3.about.1.5%, Ti: 1.5.about.3.5%, Al: 0.5.about.1.5%, Ni+Co: 35.about.45%, B: 0.001.about.0.01%, one or both of Ca: 0.001.about.0.03% and Mg: 0,001.about.0.03%, and the balance of Fe, additionally the total atomic percentage of Al, Ti, Nb, and Ta: 4.5.about.6.0%, an atomic percentage ratio of Ti/Al: 1.0.about.2.0, and M-value obtained through the following equation.ltoreq.0.925; M=0.717 Ni (atomic fraction)+0.858 Fe (atomic fraction)+1.142 Cr (atomic fraction)+1.90 Al (atomic fraction)+2.271 Ti (atomic fraction)+2.117 Nb (atomic fraction)+1.001 Mn (atomic fraction)+1.90 Si (atomic fraction)+0.777 Co (atomic fraction)+2.224 Ta (atomic fraction).