Technical Terms

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Glossary

• Gauer Bar

  Frequently called Gauered bar, this refers to flat bar that is passed through a machine called a Gauer. Gauering straightens bar, treats the corners, and deburrs edges. This mainly pertains to stainless steel bars.

• H-Plane – Hard Plane

  The description of orientation of a rectangular tube bend. I.e., bending a 1” x 2” tube against the 1” side.

• Hardness

  This refers to the resistance of a material to deformation, indentation, or penetration by means such as abrasion, drilling, impact, scratching, and/or wear. Hardness is not as relevant nowadays, compared to other mechanical physical properties. Common hardness tests include Brinell, Rockwell, or Vickers.

• Hardness Test, Brinell Scale

  One of the most commonly used test standards for measuring hardness of certain metals, in which a hard steel or carbide ball of a specified diameter is forced onto the material under a specified load. Abbreviated as BHN.

• Hardness Test, Rockwell Scale

  This test determines the hardness by indenting a metal with hard steel ball or diamond cone under a specified load and then comparing the penetration made by a preload. There are different scales, denoted by a single letter from “A” to “H,” which use different loads or indenters. Rockwell “B” (HRB) and “C” (HRC) are the most common measurement scales in use at this time.

• Heat Affected Zone

  This is the area of a base metal which was not melted and has had its microstructure and properties altered by welding or heat intensive cutting operations.

  Hot Rolled products are generally less expensive than Cold Finished materials, and they are ideal for applications where precise shapes and tolerances are not required, nor is the appearance especially critical.

• IR

  INSIDE RADIUS – Same as CLR only measured from the inside of a tube bend. Most common as a description used on square and rectangular tubes (Always review drawings very carefully).

• ISO 9000

  This refers to a family of quality management standards designed to help organizations meet the needs of their customers. The current standard “ISO 9001:2008” will be obsolete as of September 2018 and will be replaced by “ISO 9001:2015,” for which AED has recently met those requirements.

  AED’s quality policy is a company-wide commitment to our quality objectives, requirement compliance and customer satisfaction via continual improvement. AED’s quality objectives are to continually maintain or improve the following:

  • Quality Product Delivered On-Time
  • Quality System Compliance & Effectiveness
  • Effective Cost Controls
  • Timely Complaint Resolution