Readers are checking out Heat Treat Today's magazine from February 2023. The annual Air & Atmosphere Furnace Systems edition has a piece that sparked a comment from a reader. The letter from the publisher Doug Glenn entitled ± 0.1°F – The Debate discusses revision to AMS2750 regarding compliance temperature.
Would you like to weigh in on the topic? Submit your question, comments, thoughts, or queries here or email Bethany Leone at editor@heattreattoday.com.
Here is an excerpt from the article:
“Both Revision D and E of AMS2750 required compliance temperatures to be ±2°F or ±1.1°C (“or ±0.2%” was added in Revision E). That pesky “.1” in ±1.1°C appears to be the source of this most current “situation.” The folks using °C were recording temperatures down to 1/10th of a degree, while the folks using °F — which was not a small number of people — were not. So, the standards committee needed to make a decision on what to do about this discrepancy. The options were to round up or down or to the nearest integer for both °F and °C people OR require EVERYONE to record their temperatures down to 1/10th of a degree. After surveying end-users, the committee decided that end-users wanted to be required to record the 1/10th of a degree rather than round it up or down to the nearest integer. Thus, the new AMS2750 standard requires accuracy to 1/10th of a degree.”
The article prompted this feedback from reader Aaron Crum:
“I could not agree with you more. This is like measuring a piece of lumber with a tape measure, but being required to record the number in microns. Making requirements more stringent just for the sake of it costs companies real money with no improvement to the process or the product. I hope this gets removed in the next revision.
Thanks for the good write-up Doug!”
