News & Updates

The North American Copper Awards has recognized Zahner's copper metal-work for the Waipolu Gallery in Oahu, Hawaii.

Zahner completed the New Academic Building at Cooper Union in New York City. See the time-lapse construction video at Videos & Downloads.

President and CEO Bill Zahner is featured in the August Issue of Wired Magazine, where he has now been dubbed, the "Alpha Geek" of Metal. Read Article

The NASCAR Hall of Fame project reached 1,000,000 man-hours without a "lost-time" accident milestone recently. In recognition for Zahner's achievement TBEKD presented a plaque to Zahner
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Bill Zahner named an Honorary Member of the American Institute of Architects.

Introducing the Hands of the Artist™ division, where Zahner engineers and craftsmen produce projects for artists.

Zahner® Resources

Zahner®Resources > Metal Hardness

Metal Hardness

Hardness is a characteristic of metal that determines a material's wear and abrasive resistance.
Various degrees of hardness may be achieved in many metals by tempering, a heat treatment
process used in cold rolled and cold worked metals. As the grain structure of the metal
undergoes cold forming, the grains are stretched and altered. The surface becomes harder,
resisting deformation from contact. Tempering heats the worked metal to temperatures at
which the grains begin to dissolve. The stress relaxes slightly and the metal becomes more
ductile.

Comparative Hardness of Various Metal Alloys

(Reference: Zahner, L. Architectural Metals: A Guide to the Selection, Specification and
Performance. New York: John Wiley, 1995, Pages 14-15)