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Structural Steel Welding

An Approved Continuing Education Provider PDH Course S150 Structural Steel Welding Semih Genculu, 2007 PDH Center 2410 Dakota Lakes Drive Herndon, VA 20171-2995 Phone: 703-478-6833 Fax: 703-481-9535 PDH Course S150 Semih Genculu Page 2 of 18 Structural Steel Welding Semih Genculu, Arc Welding requires striking a low-voltage, high-current arc between an electrode and the workpiece (base metal). The intense heat generated with this arc melts the base metal and allows the joining of two components. The characteristic of the metal that is being welded and the joint type ( groove, fillet, etc.)

phase transformations (i.e. brittle untempered martensite which can form depending on the cooling rate and the chemical composition of the base material), formation of precipitates or overaging (loss of strength in precipitation-hardened alloys) all has a drastic effect on the properties of the HAZ.

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