SHIM. A thin piece of material placed between two surfaces to obtain a proper fit, adjustment, or alignment. The piece can also be analyzed to measure furnace carbon potential (that is, because while in the furnace it will quickly carburize to a level equal to the furnace carbon potential).
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THERMOCOUPLE. A device for measuring temperatures, consisting of lengths of two dissimilar metals or alloys that are electrically joined at one end and […]
TEMPERED MARTENSITE EMBRITTLEMENT. Embrittlement of ultrahigh-strength steels caused by tempering in the temperature range of 205 to 400 degrees C (400 to 750 […]
SECONDARY HARDNESS. The higher hardness developed by certain alloy steels when they are cooled from a tempering operation. This should always be followed […]
VACUUM DEPOSITION. Condensation of thin metal coatings on the cool surface of work in a vacuum.