Material |
Advantage |
Disadvantage |
Stainless steel |
- Standard material for most applications
- Body and shaft in one piece
- Cost-efficient
|
- Small bending strength for very small shaft diameter
|
Tungsten carbide (TC) |
- High bending strength even for very small shaft diameter
- Optimal proportions between shaft and ball diameter
|
- Higher weight for large styli
|
Ceramic |
- High bending strength at very low weight
- Can be used for long styli
|
- Danger of breakage for small shaft diameter
|
Carbon fiber |
- Extremely low weight
- High bending strength for long components with large cross-section
|
- Small bending strenght for small cross-section
|
Alu 7075 |
- Low weight with very high strength
- Wear-protected surface due to
hard-coated anodizing with PTFE
|
- Danger of breakage for very small cross-section.
|
