BSI BS EN 4642 Aerospace series - Steel FE-PM 3504 (X4CrNiMo16-5-1) - Air melted - Hardened and tempered - Sheet and plate - 0,6 mm less than or equal to a less than or equal to 50 mm - 900 MPa less than or equal to Rm less than or equal to 1 050 MPa
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