Pryor Lowstress Punches are manufactured from quality controlled Chromium Tool Steel allied to precise heat treatment.

Suitable for marking material up to 40 Rockwell 'C'

For guidance on hardness of material to be marked click here

Nickel plated for rust protection

Hardness is reduced at the striking end to reduce brittleness when being hit

Available in two character styles, continious line or dot formation

Pryor Lowstress Punches appear as shown		To produce a readable impression
Pryor Lowstress Punches are manufactured with special rounded characters
The diagram shows the effect on the crystalline structure of material being marked with a low stress character A lowstress impression helps avoid premature cracking, by eliminating the stress concentration at the bottom of the indentation