• 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 %
    From0,35–1,20–0,24
    To0,400,401,500,060,33

    MECHANICAL FEATURES

    According to the EN 10277-3 standard

    Thickness
    mm    		Rolled + Peeled Rolled
    ( +SH )    		Cold Drawn
    ( C+ )
    Hardness HBRm (MPa)Rp0,2  minimumRm (MPa)A5 %
    (MPa)minimum
    ≥5≤10550da 700 a 9606
    >10≤16500da 660 a 9306
    >16≤40da 166 a 216da 560 a 730420da 610 a 9007
    >40≤63da 166 a 216da 560 a 730400da 600 a 8407
    >63≤100da 163 a 207da 550 a 700350da 580 a 8208

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