Pryor Heavy Duty Punches are manufactured from quality controlled Chromium Tool Steel allied to precise heat treatment, giving a hardness of 58-62 Rockwell ‘C’ at the character and 32-40 Rockwell ‘C’ at the striking end.
Suitable for marking material up to 38 Rockwell ‘C’ For guidance on hardness of material to be marked click here Nickel plated for rust protection Pryor Heavy Duty Punches appear as shown To produce a readable impression Pryor Heavy Duty Punches are manufactured with a Sharp Faced Character The diagram shows the effect on the crystalline structure of material being marked with a sharp faced character.
