Vegetable oils are currently using basestocks for biodegradable and renewable quenchant formulation. However, there are relatively few references relating to their true equivalence, or lack thereof, relative to the quenching performance of petroleum oil-based quenchant formulations. To obtain an overview of the variability of vegetable oil quenching performance, cooling curves were determined, and the heat transfer coefficient profiles were calculated at the Institute of Materials Modification and Modeling School of Materials Science and Engineering in Shanghai, China. The vegetable oils that were studied included canola and palm oils. Cooling curves were obtained using the Tensi multiple surface thermocouple 15 mm diameter x 45 mm cylindrical Inconel 600 probe. For comparison, similar data were obtained with Houghtoquench HKM, an accelerated petroleum oil quenchant. The results of this work will be discussed here.

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