Does anyone know what spec defines a Temperature range of 68°-72° for dimensional measurement? Every spec Ive looked at thus far defines the temp as 68° period. If you deviate from that temp you must compensate for thermal effects. The reason Im asking is because we are manufacturing a magnesium housing that has a 23.501" +/-.001 dia. If we check it in the shop (71°) it checks 23.501, check it in the lab (68°) it checks 23.499 which obviously is undersize..
68° is considered room temperature, the idea temperature for checking parts. A long, long time ago in a far away galaxy 72° used to be considered room temperature. I'm guessing 1973 version. Somewhere along the line someone came up with the 68°-72° range. When actually it is just 68° If we are talking about ASME of course. I believe it was the 82 version that first started 68°
68° is considered room temperature, the idea temperature for checking parts. A long, long time ago in a far away galaxy 72° used to be considered room temperature. I'm guessing 1973 version. Somewhere along the line someone came up with the 68°-72° range. When actually it is just 68° If we are talking about ASME of course. I believe it was the 82 version that first started 68°
