EN 10277:2018 standard W.NR.: 1.0540 Non-alloy high grade steel CHEMICAL COMPOSITION MECHANICAL FEATURES PROPERTIES Heat analysis according to the EN ISO 683-1:2018 standard C % Si % Mn % P % S % Cr % Ni % Mo % Cu % Cr+Mo+Ni % From 0,47 0,10 0,60 – – – – – – – To 0,55 0,40 0,90 0,045 0,045 0,40 0,40 0,10 0,30 0,63 According to the EN 10277:2018 standard Thickness mm Rolled + peeled rolled ( +SH ) Cold drawn ( +C ) hardness HB Rm (MPa) Rp0,2 minimum Rm (MPa) A5 % (MPa) minimum ≥5≤10 590 da 770 a 1100 5 >10≤16 520 da 730 a 1080 6 >16≤40 da 179 a 269 da 610 a 910 440 da 690 a 1050 7 >40≤63 da 179 a 269 da 610 a 910 390 da 650 a 1030 8 >63≤100 da 179 a 269 da 610 a 910 – – – * Delivery condition: as rolled. Weldability: Not weldable. It can be welded only with particular precautions. It has a bad machinability. Hardenability: It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell. Notes: CORRESPONDENCE WITH THE OTHER STANDARDS (purely as an indication): UNI 7845 DIN 17200 AISI-SAE C50 C50 1050 C50-EN.pdf (PDF, opens in a new window)