Watch Case Back Material Scratch Hardness Guide
Author: Funny Items
Release time: 2026-08-21 14:39:17
View number: 11
Scratch Hardness
Watch case back material scratch hardness determines resistance to surface damage.
Hardness Guide
- Steel: 5-6 Mohs
- Titanium: 6-7 Mohs
- Ceramic: 8-9 Mohs
- Sapphire: 9 Mohs