Cold drawn EN 10277:2018 standard W.NR.: 1.7220 Special alloy steel CHEMICAL COMPOSITION MECHANICAL FEATURES PROPERTIES Analysis according to the EN ISO 683-2:2018 standard C % Si % Mn % P % S % Cr % Mo % Cu % From 0,30 0,10 0,60 – – 0,90 0,15 – To 0,37 0,40 0,90 0,025 0,035 1,20 0,30 0,40 According to the EN 10277:2018 standard (not provided for) Thickness mm annealed + cold drawn ( +A+C ) hardness HB max ≥5≤10 – >10≤16 – >16≤40 – >40≤100 – * Delivery condition: soft annealed. Weldability: Low weldability; this steel grade can be welded only with suitable precautions. Hardenability: Steel grade with medium carbon content showing a poor hardenability; sensitive to notching and to quenching cracks. Notes: CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication) : UNI 7845 DIN 17200 AFNOR 35-552 AISI-SAE 35CrMo4 34CrMo4 34CD4 4135 34CrMo4-EN.pdf (PDF, opens in a new window)