SM490C irin awo

Labẹ Janpanese irin boṣewa Jis g3106, SM490 ni o ni meta o yatọ si onipò, aush bi SM490A, SM490B ati SM490C, awọn ifilelẹ ti awọn iyato ni erogba ni fun awọn irin onipò.Comparing pẹlu SM490B, irin awo SM490C ni lati wa ni kekere otutu impacting igbeyewo labẹ 0 centigrade pẹlu iye agbara ikolu ti o kere julọ ni 47J, SM490B pẹlu 27J fun awo idanwo ayẹwo.Ti awọn olumulo ipari ba nilo ṣe itọju ooru fun awo-orin igbekale SM490C labẹ Normalized,Quenched and Tempered,Tempered,wọn yẹ ki o gbejade ọrọ yii ni PO nigbati o ba paṣẹ .