Location History:
- Coraopolis, PA (US) (1976 - 1981)
- Michigan City, IN (US) (1983)
Company Filing History:
Years Active: 1976-1983
Title: The Innovations of David A. Chatfield
Introduction
David A. Chatfield is a notable inventor based in Coraopolis, Pennsylvania. He has made significant contributions to the field of materials science, particularly in the development of advanced aluminum-magnesium alloys and low-carbon electrical steel. With a total of four patents to his name, Chatfield's work has had a considerable impact on the manufacturing industry.
Latest Patents
Among his latest patents is a method of producing high tensile aluminum-magnesium alloy sheet. This innovative process involves creating an aluminum-based melt with a low percentage of magnesium, specifically between 1.5% and 2.3%. The melt is then formed into a sheet with a uniform thickness ranging from 1/8 to 1/2 inch, which is quenched to a temperature below 500°F within three minutes. The resulting sheet is cold rolled to a thickness between 0.01 and 0.02 inch without applying extraneous heat, achieving a fully-hardened tensile strength exceeding 50,000 psi. Another significant patent is for a method of producing fully processed low-carbon electrical steel. This method allows for the continuous annealing of a steel strip with a carbon content of less than 0.02% at temperatures between 1350°F and 1550°F, eliminating the need for post-anneal deformation.
Career Highlights
David A. Chatfield is currently employed at National Steel Corporation, where he continues to innovate and develop new materials. His work has been instrumental in advancing the capabilities of steel and aluminum products, making them more efficient and durable for various applications.
Collaborations
Throughout his career, Chatfield has collaborated with notable colleagues, including Robert R. Goodhart and Carmen C. Manzonelli. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.
Conclusion
David A. Chatfield's contributions to materials science through his patents and work at National Steel Corporation highlight his role as a leading inventor in the industry. His innovative methods for producing high tensile aluminum-magnesium alloys and low-carbon electrical steel are paving the way for advancements in manufacturing processes.