Standard [CURRENT]
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This European Standard specifies the requirements relating to steel X105CrMo17 (1.3544); - Hardened and tempered; - Bars D e ≤ 150 mm, for aerospace applications. Other common designations: UNS: S44004, AISI: 440C, XDBD. NA 131-01-01 AA "Stähle" ("Steel") is responsible for this document.