Hi,
I have an Italian print that uses 4130, the problem I have is in the legend it calls out for: “Stato fornitura Mat- Bonificato R > 85/100 daN/mm²” when I Google it I come up with: State provision Mat- Quenched R> 85/100 daN/mm²
I know it has to do with the Tensile Strength of the material...