Edge Rolling (Edge Conditioning)

Rolling a strip of steel to smooth the edges. By removing the burr off the coil, it is safer for customers to manipulate.

Electric Arc Furnace (EAF)

Steel-making furnace where scrap is generally 100% of the charge. Heat is supplied from electricity that arcs from the graphite electrodes to the metal bath. Furnaces may be either an alternating current (AC) or direct current (DC). DC units consume less energy and fewer electrodes, but they are more expensive.

Electric Resistance Welded (ERW) Pipe

Pipe made from strips of hot-rolled steel which are passed through forming rolls and welded. While seamless pipe is traditionally stronger and more expensive than comparable ERW pipe, ERW technology is improving and the technique now accounts for approximately 48% of OCTG shipments by tonnage.

Electrical Steel

(See Silicon Electrical Steel)

Electrolytic Galvanized 1

Cold Rolled or Black Plate to which a coating of zinc is applied by electro-deposition; used for applications in which corrosion resistance and paintability is a primary concern.

Electrolytic Tin Coated Sheets (ETCS) 1

Cold rolled sheets coated with tin by electro-deposition through an acid or alkaline process.

Electrolytic Tin Plate (ETP) 1

Light-gauge, low-carbon, cold reduced steel on which tin has been electrodeposited.

Black plate coated with Tin Sn electron deposition.

Electropolishing 3

The process used on stainless steel tubing and fittings to simultaneously smooth, brighten, clean, and passivate the interior surfaces of these components. Electropolishing is an electrochemical removal process that selectively removes a thin layer of metal, including surface flaws and imbedded impurities. Electropolishing is a required surface treatment process for all ultra high-purity components used in the gas distribution systems of semiconductor manufacturers worldwide and many sterile water distribution systems of pharmaceutical and biotechnology companies.

Exotic Alloys

Zirconium, niobium, hafnium, and tantalum products.

Extrusion

The process of shaping material by forcing it to flow through a shaped opening in a die.

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