- min. surface hardness 450 HV
- core hardness 300-350 HV
The tensile strength of these fasteners is at least 900 N/mm², i.e. it corresponds at least to a 9.8 screw.
Yield strength is approx. 90% of tensile strength. Elongation as break is in the range of 10.9 to 12.9 screws.
Threads can be generated in base materials up to 150HB/500 N/mm². |
- 8.8, 9.8, 10.9 and 12.9 qualities
Used in applications with dynamic loads combining tensile stress and bending stress.
Threads can be generated in base materials up to 120HB/ 400 N/mm² (possibly higher if special steps are taken). |
