Cold drawn EN 10277:2018 standard W.NR.: 1.7225 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 0,38 0,10 0,60 – – 0,90 0,15 – To 0,45 0,40 0,90 0,025 0,035 1,20 0,30 0,40 According to the EN 10277:2018 standard Thickness mm Annealed + cold drawn ( +A+C ) hardness HB max ≥5≤10 300 >10≤16 290 >16≤40 285 >40≤63 280 >63≤100 280 * Delivery condition: soft annealed. Weldability: Bad weldability due to the high crack danger. Hardenability: Medium-good hardenability, suitable for hot purposes till a temperature of 500°. It can be hardened in oil. Notes: CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication): UNI 7845 DIN 17200 AFNOR 35-552 AISI-SAE 42CrMo4 42CrMo4 42CD4 4140 42CrMo4-EN.pdf (PDF, opens in a new window)