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    • EN 10277-3 Standard

    W.NR.: 1.0760/38SMn28

    High Machinability Steel For Direct Hardening

    CHEMICAL COMPOSITION

    Heat analysis according to the EN 10277-3 standard

    C % Si % Mn % P % S %
    From 0,35 – 1,20 – 0,24
    To 0,40 0,40 1,50 0,06 0,33

    MECHANICAL FEATURES

    According to the EN 10277-3 standard

    Thickness
    mm    		 Rolled + Peeled Rolled
    ( +SH )    		 Cold Drawn
    ( C+ )
    Hardness HB Rm (MPa) Rp0,2  minimum Rm (MPa) A5 %
    (MPa) minimum
    ≥5≤10 550 da 700 a 960 6
    >10≤16 500 da 660 a 930 6
    >16≤40 da 166 a 216 da 560 a 730 420 da 610 a 900 7
    >40≤63 da 166 a 216 da 560 a 730 400 da 600 a 840 7
    >63≤100 da 163 a 207 da 550 a 700 350 da 580 a 820 8

    * Delivery condition: as rolled.

    PROPERTIES

    Machinability:
    This steel grade generally shows a quite good machinability on machine tools; machinability decreases with the increase of carbon, silicon and manganese content.

    Weldability:
    Due to the high sulphur and phophorus content free-cutting steels for direct hardening are not recommended for welding.

    Notes:

    CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication):

    UNI 4838 AFNOR 35-562 EN 10087
     / /  38SMn28