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:
Dec. 25, 2018
Filed:
Jan. 04, 2016
Uacj Corporation, Tokyo, JP;
UACJ CORPORATION, Tokyo, JP;
Abstract
An aluminum alloy fin material for heat exchangers, containing 0.5 to 1.5 mass % of Si; more than 1.0 mass % but not more than 2.0 mass % of Fe; 0.4 to 1.0 mass % of Mn; and 0.4 to 1.0 mass % of Zn, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 μm is less than 1×10particles/mm, and that a density of second phase particles having a circle-equivalent diameter of 0.1 μm or more is 1×10particles/mmor more, wherein a tensile strength before braze-heating, TS(N/mm), a tensile strength after braze-heating, TS(N/mm), and a fin sheet thickness, t (μm), satisfy: 0.4≤(TS−TS)/t≤2.1, and wherein the sheet thickness is 150 μm or less; and a method of producing the same.