Hardness:
Shaft 60 ± 2 HRC
Head 45 ± 5 HRC
Description of FIBRO materials for tool and die components see at the beginning of Chapter E.
Execution:
Shaft precision ground, hardened.
Head hot dipped and tempered.
The compression thickening below the head is omitted depending on the manufacturing process.
d 4: For d1 < 5 mm, d 4 = d1+0,03
For d1 ≥ 5 mm, d 4 = d1+0.04
for d1 ≥ 18 mm, d 4 = d1+0.07