The aim of this work is to determine a set of heat transfer coefficients (HTCs) for a wide range of HPGQ pressures. Thermocouples were embedded 6” axially from the end of cylinders, made from 1018 steel, with dimensions of 3” diameter and 24” in length. A production load of about 20 bars, eight instrumented with thermocouples and 12 without, was quenched with an HPGQ process using pressures of 2, 4, 6, 10, 15, and 20 bar nitrogen gas. Figure 1 shows the time temperature data collected from one such run, and an image inset showing the racking configuration and furnace used in the experiments [1]. In addition to the temperature histories collected from the embedded thermocouples for each set of pressures, the data shows the variability in the furnace based on position in the quench chamber. Figure 1 shows that the cylinder in position two quenches much faster than the other cylinders in the load because it is situated directly in front of the nozzles that deliver the quench-gas to the chamber. In an actual production run, heat treaters consider part placement to avoid parts being placed in positions that have excessive cooling, which could result in increased distortion in the part after quenching. Understanding the variability of the process equipment is paramount to producing quality parts.