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Yperion Titanium caliper pistons are always made of hardened titanium alloys, we use Ti-6Al-4V and much stronger VT22 titanium alloy for this application. Material strength gives us a possibility to calculate thin walled pistons when weight is very critical. The piston surface hardness determines durability of the DLC plasma coating. With VT22 alloy, a value of 43.5 HRC is achievable, this greatly exceeds the value of standard Ti-6Al-4V that has not been heat treated. This option is the coolest upgrade to your braking system, you can apply technology from the world of racing to your standard caliper like a Subaru or Evo caliper that comes standard with aluminum pistons (the problem of the aluminum piston is the highest thermal conductivity, which always harms the entire brake system).
HRC is the hardness of steel according to the Rockwell Scale
Diamond-Like Carbon (DLC) coatings exist in several different forms of amorphous carbon materials that display some of the unique properties of diamond.