• EN 10277-3 Standard

    W.NR.: 1.0718/11SMnPb30

    High Machinability Steel Not Destined To Heat Treatment

    CHEMICAL COMPOSITION

    Heat analysis according to the EN 10277-3 standard

    C %Si %Mn %P %S %Pb %
    From––0,90–0,270,20
    To0,140,051,300,110,330,35

    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≤10440da 510 a 8106
    >10≤16410da 490 a 7607
    >16≤40da 112 a 169da 380 a 570375da 460 a 7108
    >40≤63da 112 a 169da 370 a 570305da 400 a 6509
    >63≤100da 107 a 154da 360 a 520245da 360 a 6309

    * Delivery condition: as rolled.

    PROPERTIES

    Machinability:
    This steel grade is marked by a good machinability on machine tools and by an easy fragmentation of chips.
    In order to further improve its machinability, this steel grade can be supplied upon request with Te (tellurium) and Bi (bismuth) addition.

    Weldability:
    Due to the high sulphur and phophorus content free-cutting steels not destined to heat treatment are not generally recommended for welding.

    Notes:

    CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication):

    UNI 4838DIN 1651AFNOR 35-561ISO 683-9EN 10087
     CF 9 SMnPb 28 9SMnPb28 S 250 Pb11 SMnPb 28 11SMnPb30