Cold drawn EN 10277:2018 standard W.NR.: 1.0715 High machinability steel not destined to heat treatmen CHEMICAL COMPOSITION MECHANICAL FEATURES PROPERTIES Heat analysis according to the EN ISO 683-4:2018 standard C % Si % Mn % P % S % From – – 0,90 – 0,27 To 0,14 0,05 1,30 0,11 0,33 According to the EN 10277:2018 standard Thickness mm Rolled + peeled rolled ( +SH ) Cold drawn ( +C ) hardness HB max Rm (MPa) Rp0,2 minimum Rm (MPa) A5 % (MPa) minimum ≥5≤10 440 da 510 a 810 6 >10≤16 410 da 490 a 760 7 >16≤40 169 da 380 a 570 375 da 460 a 710 8 >40≤63 169 da 370 a 570 305 da 400 a 650 9 >63≤100 154 da 360 a 520 245 da 360 a 630 9 * Delivery condition: as rolled. Machinability: This steel grade is marked by a good machinability on machine tools and by an easy fragmentation of chips. 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 4838 DIN 1651 AFNOR 35-561 EN 10277-3:08 EN 10087 CF 9 SMn 28 9SMn28 S 250 11SMn30 11SMn30 11SMn30-EN.pdf (PDF, opens in a new window)