Cold drawn standards EN 10277:2018 Special alloy case-hardening steel CHEMICAL COMPOSITION MECHANICAL FEATURES PROPERTIES Heat analysis according to the EN ISO 683-3:2022 standard C % Si % Mn % P % S % Cr % Ni % Pb % Cu % DA 0,13 – 0,70 – 0,020 0,60 0,80 0,15 – A 0,19 0,40 1,00 0,025 0,040 1,00 1,10 0,35 0,40 According to the EN 10277:2018 standard Thickness mm Soft annealed* + peeled rolled (+A +SH ) Soft annealed* + cold drawn ( +A+C ) Hardness maximum values HB Hardness maximum values HB ≥5≤10 – 270 >10≤16 – 260 >16≤40 217 255 >40≤63 217 255 >63≤100 217 255 * Delivery condition: subjected to a softening treatment according to the maximum hardness prescription. Good machinability in the annealed condition and good aptitude / endurance to heat treatment; this steel grade undergoes heat treatment without important deformations. Hardenability: It has a low-medium hardenability enabling the use, with good core resistance, till a thickness of about 50 mm. Notes: CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication): UNI 7846 EN 10084 AISI – SAE EN 10277-4:08 16CrNi4+Pb 16NiCrS4+Pb 3115 16NiCrS4+Pb 16NiCrS4Pb-EN.pdf (PDF, opens in a new window)