EN ISO 683-7:2024 STANDARD W.NR.: 1.0579 Non-alloy steel for structural purposes CHEMICAL COMPOSITION MECHANICAL FEATURES PROPERTIES Heat analysis according to the EN 630-2:2021 standard * P and S = max. 0,030% for long products C % Si % Mn % *P % *S % N % Cu % per spessori in mm ≤40 >40 From – – – – – – – – To 0,20 0,22 0,55 1,60 0,025 0,025 – 0,55 According to the EN 683-7:2024 standard Thickness mm Rolled + peeled rolled ( +SH ) Cold drawn ( +C ) hardness HB Rm (MPa) Rp0,2 minimum Rm (MPa) A5 % (MPa) minimum ≥5≤10 520 da 630 a 950 6 >10≤16 450 da 580 a 880 7 >16≤40 da 140 a 187 da 470 a 630 350 da 530 a 850 8 >40≤63 da 140 a 187 da 470 a 630 335 da 500 a 770 9 >63≤100 da 140 a 187 da 470 a 630 315 da 470 a 740 9 * Delivery condition: as rolled. Calcolo del carbonio equivalente: CEV = C + mn6+Cr+Mo+V 5+Ni+Cu 15 Weldability: This steel grade is generally suitable to welding. Notes: CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication): EN 10277-2:2008 UNI 7070 DIN 17 100 BS 4360 S355J2C Fe 510 D St 52-3 N 50 D8 S355D_3.pdf (PDF, opens in a new window)