glossary

glossary

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Airtight. Heterogenous. A mixture of phases such as: liquid-vapor or solid-liquid-vapor.

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Hertz (Hz) is the symbol which has replaced the term ?cycles per second.? Today, rather than saying 60 cycles per second or simply 60 cycles, we say 60 Hertz or 60 Hz.

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Steels containing in excess of 10% alloy content. Stainless steel is considered a high alloy because it contains in excess of 10% chromium.

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Steel with carbon content usually below 1.3% carbon, but may range from 1.0-2.0%.

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(as applied to gas-tungsten arc welding) An alternating current consisting of over 50,000 cycles per second at high voltage, low amperage that is superimposed on the welding circuit in GTAW power sources. It ionizes a path for non-touch arc starting and stabilizes the arc when welding with alternating current.