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J Dent Res 51(6): 1537-1545, 1972
© 1972 International and American Associations for Dental Research
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Effects of Heat Treatment on Mechanical Properties of Two Nickel-Chromium-Based Casting Alloys

SIMON CIVJAN 1, EUGENE F. HUGET 1, GERALD D. GODFREY 1, HEINER LICHTENBERGER 1, and WILLIAM A. FRANK 1

1 Division of Dental Materials, US Army Institute of Dental Research, Walter Reed Army Medical Center, Washington, DC 20012, USA

Mechanical and heat treatment characteristics of two nickel-chromium-based dental casting alloys were investigated. Both alloys showed rapid response to heat treatment. In their softened state the alloys lost 25 to 50% of their as-cast hardness. Elongation was 20 to 45%. Rehardening nearly restored as-cast strength, whereas elongation values remained at 10 to 17%.

Submitted on June 1, 1971






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