Key principles.
25-50 µm
Hard chrome plating 67-72 HRC. Standard wear surface.
Surface 60+ HRC
Steel surface hardened via nitrogen diffusion. 0.1-0.5 mm deep.
Coating + heat
Electroless coating + heat treat to 70+ HRC.
Diamond-like carbon
Hard, low-friction coating. Premium wear surfaces.
Aluminum
Type III aluminum hardcoat 45+ HRC equivalent.
Steel surface
Surface carbon enrichment + quench for hardened case.
Spray coating
HVOF tungsten carbide spray coatings.
Nitride + carbon
Combined surface treatment for harder, tougher case.
Specialty
Plasma-sprayed ceramics for extreme wear.
FAQ
25-50 µm typical functional chrome. Thicker possible but stress accumulates.
0.1-0.5 mm hardened case typical. Deeper requires longer process. Specify per wear application.
Hardness 30-80 GPa. Friction coefficient 0.05-0.1. Premium wear coating but cost limits to high-value applications.
DLC, nitrocarburizing, hard chrome reduce galling tendency. Especially stainless-on-stainless mating.
Heat treatment hardens through-thickness. Coating only surface. Choose per application — coating cheaper for surface-only wear.
Hardness verification, thickness measurement, adhesion testing per coating spec.
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