GLOSSARY
Abrasion Resistant - Sheet and plate that with chemical properties that make it less resistant to scratching or marring (typically known as “AR” plate). Aircraft quality - Material suitable for making highly stressed parts as used in aircraft manufacturing. AISI - The abbreviation for the American Iron and Steel Institute. Alloy Steel - Steel which contains significant quantities of alloying ele- ments (nickel, chromium, manganese, molybdenum, vanadium, silicone and copper) added to reduce property changes caused during heat treating. American Standard Beam - Doubly symmetric beamshapes whose inside flange typically has a 16-2/3% slope. Also called “S” beam. Annealing - Process inwhich hot or cold rolled steel is heated and cooled to soften or change themicrostructure. API - The abbreviation for the American Petroleum Institute. ASME - The abbreviation for the American Society of Mechanical Engineers. ASTM - The abbreviation for the American Society for Testing and Materials. Bar-sized - Steel shape inwhich each profile dimension is less than 3 inches. Bare - In pipe, the surface is considered “bare” when is does not have the protective lacquer coating. In tubing, the “bare” material ismill finish (not painted or Pickled) material will typically be dull in finish and may have an oil coating. Beam - A structural member whose primary function is to carry loads transverse to its longitudinal axis (or web). Brinell Hardness - Scalewhich denotes the impact strength of a particu- lar sample of steel. Camber - The greatest deviation of a side or edge froma straight line. Carbide - A compound of carbonwith one or moremetallic elements. Carbon Steel - Steel containing up to 1%of carbon and only residual quantities of other elements. Charpy V-notch - Test used tomeasure the impact strength of steel. Casting - Process inwhich a solidmetal product is formed by pouring moltenmaterial into amold and allowing it to cool. Cold-formed - Steel which the last process in forming (or finishing) is achievedwithout heat. The result is a clean, uniformsurface and, in some products, increased strength andwear resistance. This includes cold-drawn, cold-rolled and cold-finished products. Commercial Quality - Steel sheet commonly used in simple bending ap- plications. Typically the exact chemical composition varies (also known as CQ). Deflection - Deviation, under load, of a structural member fromnormal position. Drawing - A process inwhich a structural shape is forced through a die or dies.
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