Technical Terms

Technical Terms of Products


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  • Physical Properties

    This refers to properties that pertain to the physics of a material. Common measurements include density, heat or electrical conductivity, and coefficient of thermal expansion. (Sometimes incorrectly referred to as Mechanical Properties, which are different).

  • Pipe

    This is a tubular product that can be made from steel, stainless steel, aluminum, etc., but it is produced to a system of standards called “schedules,” which define wall thicknesses for specific diameters. A pipe diameter is nominal, not actual. The physical outside diameter is larger than its nominal OD. Pipe is mainly intended to convey water, fuel, gas, oil, air, steam, etc.

  • Precipitation Hardening

    This is a heat treatment process used to increase the yield strength of malleable materials, including most structural alloys of aluminum, magnesium, nickel, titanium, and some steels and stainless steels. Sometimes abbreviated “PH” and most commonly associated with several grades of stainless steel.

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