關於「EN41B Equivalent material」標籤，搜尋引擎有相關的訊息討論：

EN41B | 41CrAlMo7 |1.8509|SACM645 - Fuhong Steelwww.round-bars.com › PortfolioAlloy Steel Grades - KISCOwww.kiscosteel.com › gradesEquivalent Grades - A/SA516-70, A/SA515-70,www.rolexmetals.com › sdp › Equivalent_Grades41CrAlMo7 40CAD6.12 905M31 DIN 1.8509 EN41B Nitriding Steel