Paese | STATI UNITI | Gran Bretagna | Gran Bretagna | Giappone |
Standard | ASTM A29 | EN 10250 | BS 970 | JIS G4103 |
Gradi | 4340 | 36CrNiMo4/ | EN24/817M40 | SNCM 439/SNCM8 |
1.6511 |
C% | Carbonio 0.38 - 0.43 |
Mn% | Manganese 0.6 - 0.8 max |
% P | Fosforo 0.035 max |
S% | Zolfo 0.040 max |
Si% | Silicio 0.15 - 0.3 |
Ni% | Nichel 1.65 - 2.0 |
% CR | Cromo 0.7 - 0.9 |
% MO | Molibdeno 0.2 - 0.3 |