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:
Jun. 13, 1978
Filed:
Jul. 01, 1977
Applicant:
Inventors:
Roberto Bruno, Rome, IT;
Valerio Faccenda, Rome, IT;
Assignee:
Italsider S.p.A., , IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ; C22C / ;
U.S. Cl.
CPC ...
75124 ; 75125 ;
Abstract
A weathering steel has high toughness and rapidly develops a protective oxide coating and contains C 0.05 - 0.15, Mn 0.5 - 1.5, Cu 0.2 - 0.5,Al 0.2 - 0.5, Si 0.1 - 0.8, Cr 0.5 - 1.5, S up to 0.02, P up to 0.04, Nb up to 0.020, N up to 0.010 Mo up to 0.15, Ti up to 0.1, balance essentially iron, the proportions being as follows: