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| Electro-Motive EMS Numbers https://www.rypn.org/forums/viewtopic.php?f=1&t=45811 |
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| Author: | PCook [ Tue Aug 17, 2021 10:20 am ] |
| Post subject: | Electro-Motive EMS Numbers |
I recently had a call from a preservation organization regarding Electro-Motive EMS numbers. Just for everyone's general information, these are an internal material specification system dating back to the 1930s. (EMS = Electro-Motive Material Specification). They are comparable to SAE, AISI and other industry material specification systems, but the EMS numbers are proprietary within EMD. I don't know of any published crossover tables. It is up to Progress Rail as to whether they want to identify it for a customer or not. Occasionally it is possible to estimate the material based on the welding rods specified in Maintenance Instructions. PC |
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