These are Hop-Ups Front or Rear Shock Shafts from Hot Racing for HPI Hellfire.
FEATURES:
Stainless steel construction with a Titanium Nitride (TiN) coating. Titanium
Nitride is an extremely hard, thin film coating that provides
wear resistance, reduced friction, non-stick properties, and
improved surface properties, with an attractive gold colored appearance.
INCLUDES:
Two Shock Shafts for the HPI Hellfire
REQUIREMENTS:
Installing inside shock bodies
length: 2.7" (70mm)
diameter: 0.14" (3.5mm)Interest
Titanium nitride (TiN) is an extremely hard (~85 Rockwell C Hardness or ~2500 Vickers Hardness)1, ceramic material, often used as a coating on titanium alum, steel, carbide, and aluminum components to improve the substrate´s surface properties.
TiN has excellent infrared (IR) reflectivity properties, reflecting in a spectrum similar to elemental Gold (Au). Depending on the substrate material and surface finish, TiN will have a coefficient of friction ranging from 0.4 to 0.9 vs. itself (non-lubricated). Typical formation is a face-centered cubic crystalline structure with a roughly 1:1 stoichiometry. TiN will oxidize at 600°C (~1100°F) at normal atmo sphere , and has a melting point of 2930°C.
