Example: air traffic controller

参考資料 - mekatoro.net

119 120 鉄鋼材料強度表Material strength table SS330 SS400 SS490 S15C S20C S25C S30C S35C S40C S45C S50C S55C SNC236 SNC631 SNC836 SNCM240 SNCM431 SNCM439 SNCM447 SNCM625 SNCM630 SCr430

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  Material, Ss400, S45c

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