Product material: Iron/steel ,Stainless steel ,Copper ,Aluminum ,Tin ,Magnesium ,Titanium ,Tungsten/tungsten carbide ,Molybdenum ,Precious metals(e.g., gold, silver, platinum), etc.
Hardness: HRA89°, 83°, 85° with wear resistance.
Features: extremely high bending strength, strong impact resistance, high mirror finish with inner hole.