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:
Aug. 06, 1985
Filed:
Feb. 16, 1978
Applicant:
Inventors:
Friedrich J Esper, Leonberg, DE;
Robert Zeller, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ; C22C / ;
U.S. Cl.
CPC ...
75230 ; 7512 / ; 7512 / ; 419 10 ;
Abstract
High strength ductile sintered iron alloy composition containing silicon and phosphorus with a total alloy content below 4% having a yield point above 400 N/mm.sup.2 and an impact strength of more than 40 J/cm.sup.2. The alloys contain between about 0.5 and 3% by weight silicon, and between about 0.2 and 0.7% phosphorus, with the balance being iron. These alloy compositions are made by sintering iron, iron-silicon and iron-phosphorus powders at temperatures between about 1050.degree. and 1200.degree. C.