Glossary of Terms - Metals Dictionary

>> GLOSSARY OF TERMS

EARING
Wavy projections formed at the open end of a cup or shell in the course of deep drawing because of differences in directional properties. Also termed scallop. See non scalloping.

EDGE FILING
A method whereby the raw or slit edges of strip metal are passed or drawn one or more times against a series of files, mounted at various angles. This method may be used for deburring only or filing to a specific contour including a completely rounded edge.

EDGE STRAIN OR EDGE BREAKS
Creases extending in from the edge of the temper rolled sheet.

EDGES

COPPER BASE ALLOYS - Slit, Slit and Edge Rolled, Sheared, Sawed, Machined.

SHEET STEELS OR ALUMINUM SHEET - Mill Edge, Slit Edge or Sheared Edge.

STRIP STEELS and STAINLESS STRIP

No.1 Edge -	A smooth, uniform, round or square edge, either slit or filed or slit and edge rolled as specified, width tolerance +/-,QQ5”.
No.2 Edge -	A natural round mill edge carried through from the hot rolled band. Has not been slit, filed, or edge rolled. Tolerances not closer than hot-rolled strip limits.
No.3 Edge -	Square, produced by slitting only. Not filed. Width tolerance close.
No.4 Edge -	A round edge produced by edge rolling either from a natural mill edge or from slit edge strip. Not as perfect as No.1 edge. Width tolerances liberal.
No.5 Edge -	An approximately square edge produced by slitting and tiling or slitting and rolling to remove burr.
No.6 Edge -	A square edge produced by square edge rolling, generally from square edge hot-rolled occasionally from slit strip. Width tolerances and finish not as exacting as No.1 edge.

EDGEWISE CURVATURE
(See Camber.)

EDGING
The dressing of metal strip edges by rolling, tiling or drawing.

ELASTIC LIMIT
Maximum stress that a material will stand before permanent deformation occurs.

ELECTRIC FURNACE STEEL
Steel made in any furnace where heat is generated electrically, almost always by arc. Because of relatively high cost, only tool steels and other high-value steels are made by the electric furnace process.

ELECTRO-GALVANIZING
Galvanizing (see) by electro deposition of zinc on steel.

ELECTROCLEANING
(Electrolytic Brightening) - An anodic treatment. A cleaning, polishing, or oxidizing treatment in which the specimen or work is made the anode in a suitable electrolyte; an inert metal is used as cathode and a potential is applied.

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