Versione   | Ni(%)   | C(%)   | Cu(%)   | Si(%)   | Fe(%)   | Mn(%)   | S   | 
N. 4   | 99.9   | 0.01   | 0.01   | 0.03   | 0.04   | 0.02   | |
N. 6   | 99.5   | <0.10   | <0.03   | <0.10   | <0.10   | <0.05   | 0.01   | 
Diametro   | 0.03   | >0.03-0.10   | >0.10-0.40   | >0.40-0.80   | >0.80-1.20   | >1.20-2.00   | 
Tolleranza   | ±0.0025   | ±0.005   | ±0.006   | ±0.013   | ±0.02   | ±0.03   |