Is test 5.20 thermal cycling or thermal shock?
5.20 states: The procedure should agree with Method 1010 of MIL-STD 883C, with a minimum temperature ramp rate of 10°C/min.”, which makes it sound like a chamber capable of only 10°C/min. is required. “3.1 Timing. The total transfer time from hot to cold or from cold to hot shall not exceed one minute. The load may be transferred when the worst case load temperature is within the limits specified in table I.