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:
Jan. 27, 2009
Filed:
May. 23, 2005
Akihiro Toji, Yasugi, JP;
Toshihiro Uehara, Yonago, JP;
Katsuhiko Tominaga, Wako, JP;
Shoichi Nakaya, Wako, JP;
Katsuaki Sato, Wako, JP;
Akihiro Toji, Yasugi, JP;
Toshihiro Uehara, Yonago, JP;
Katsuhiko Tominaga, Wako, JP;
Shoichi Nakaya, Wako, JP;
Katsuaki Sato, Wako, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A low cost, economical and less resource-consuming heat resistant alloy for use as material of engine valve is disclosed, while the alloy has excellent mechanical properties at high temperature and excellent toughness after heated for a long time that conventional heat resistant alloys have not had. The alloy consists essentially of, in mass percent, C of 0.01 to 0.15%, Si of 0.01 to 0.8%, Mn of 0.01 to 0.8, Cr of 14 to 17%, Mo of more than 3.0% but equal to or less than 5.0%, Al of 1.6 to 2.5%, Ti of 1.5 to 3.0%, Nb or Nb+Ta of 0.5 to 2.0%, Ni of 50 to 60%, B of 0.001 to 0.015%, at least one of Mg of 0.001 to 0.015% and Ca of 0.001 to 0.015%, and the balance being Fe,