Product Profile of Precision Piercing Punches
The precision punches are manufactured by h & j associates are suitably selected high speed steel [hss] and special alloy steel [wps]. Punches are heat treated and triple tempered under strict quality control. The punches are precision ground to close tolerances and surface finish is maintained between 0.3 to 0.4 µm.
- Head hardness of punch - 45 rc ± 5
- Shank hardness - 60±2 rc [for wps material]
- Shank hardness - 62±2 rc [for h.S.S. Material]
Standard sizes are regularly manufactured, though special sizes step punches, step ejector pins and shapes can also be manufactured as per customer`s requirements.
