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:
Nov. 25, 1980
Filed:
Nov. 30, 1978
Heinz J Althoff, Oberursel, DE;
Heinz Lommel, Neu-Anspach, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
An Al-Mn alloy which can be brazed and enamelled, has a high resistance to corrosion and in a completely recrystallized state has an ultimate tensile stress of at least 150 N/mm.sup.2 ; a process for producing such an Al-Mn alloy by forming a melt comprising 0.8 to 2 weight percent manganese, 1.40 to 3 weight percent silicon, 0.2 to 1 weight percent iron, 0 to 0.2 weight percent copper, 0 to 0.2 weight percent magnesium, balance aluminum and in a total up to 0.2 by weight inevitable impurities which are due to the manufacture, casting said melt to form an ingot, annealing said ingot to 400.degree. to 620.degree. C. for 2 to 20 hours, hot-rolling and cold-rolling said ingot to final dimensions of the semifinished product, and subsequently annealing the semifinished product at a temperature above 450.degree. C.