Conditions Leading to Quench Cracking
other than Severity of Quench

R.R. Blackwood and L.M. Jarvis
Tenaxol Inc., Milwaukee, WI

W.R. Gritzmacher
T.C. Industries, Crystal Lake, IL

G.E. Totten
Union Carbide Corporation, Tarrytown, NY

• Introduction
• Severity of Quench
• Non-Uniform Heat Transfer
• Prior Steel Structure
• Non-Uniform Heating
• Excessive Heating
• Transformation Temperature Range

• Stress Risers from Prior Machining, Laps and Seams

• Grinding Cracks
• Alloy Inclusion Defects
• Chemical Segregation
• Alloy Depletion
• Porosity
• Improper Steel Chemistry
• Conclusions