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. 11, 2022
Filed:
Dec. 27, 2018
Takumi Hijii, Tajimi, JP;
Yoshimasa Ureshino, Miyoshi, JP;
Hitoshi Sakuma, Toyota, JP;
Gou Nakamura, Toyota, JP;
Zhong-zhi Zhang, Kariya, JP;
Takumi Hijii, Tajimi, JP;
Yoshimasa Ureshino, Miyoshi, JP;
Hitoshi Sakuma, Toyota, JP;
Gou Nakamura, Toyota, JP;
Zhong-zhi Zhang, Kariya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
AISIN TAKAOKA CO., LTD., Toyota, JP;
Abstract
A spheroidal graphite cast iron having an excellent impact strength at low temperature and a method for producing the same are provided. The present disclosure relates to the spheroidal graphite cast iron comprising: C: 3.5 mass % to 4.2 mass %; Si: 2.0 mass % to 2.8 mass %; Mn: 0.2 mass % to 0.4 mass %; Cu: 0.1 mass % to 0.7 mass %; Mg: 0.02 mass % to 0.06 mass %; Cr: 0.01 mass % to 0.15 mass %; and the balance: Fe and inevitable impurities, wherein Mn+Cr+Cu is 0.431 mass % to 1.090 mass %, a graphite nodule count is 230/mmor less, and a pearlite fraction is 30% to 85%.