Glossary

AGING: A process of change in the mechanical properties of metals and alloys. Aging takes place over a period of time at room temperature, but it occurs more quickly at higher temperatures.
AIR BENDING: A forming operation in which the metal part is formed without the punch striking the bottom of the die. Contact between work material and tool is made at only three points in the cross section.
AIR HARDENING (Air Quenching): The process by which an alloy steel is heated to the proper hardening temperature and then allowed to cool in air.
AIRCRAFT QUALITY: "Aircraft quality" metals and alloys are tested during manufacturing processes and approved as having a quality appropriate for use in aircraft parts.
AISI: American Iron and Steel Institute
ALCLAD: A very thin layer of highly pure aluminum is used to coat sheets or plates of stronger aluminum alloy.
ALLOTROPISM: Reversible phenomenon of metals existing in more than one crystal structure.
ALLOYS: Pure metal that has been melted together with other chemical elements into a new metal structure having specific physical and mechanical properties.
ALLOYING ELEMENT: A chemical element added to a pure metal during melting processes to impart certain physical and mechanical properties.
ALLOY STEEL: Steel that is alloyed with significant quantities of chemical elements such as nickel, chromium, molybdenum, or vanadium.
AMORPHOUS: Without definite form; non-crystalline; having no crystal structure.
ANISOTROPY: The property of having different qualities when a material is tested in various directions.
ANNEALING: Heating and slowly cooling a...

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Sheet Metal Forming Processes and Die Design

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Glossary

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Sheet Metal Forming Processes and Die Design

TABLE OF CONTENTS

Glossary

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