Intro
33%
Lesson 06·Coatings
PVD coatings
The thin-film hard layer. TiN, CrN, AlTiN, TiCN — what they are, what they're good for, and what those colors actually mean.
6 min readLesson 6 of 10
That gold-colored coating on a brand-new punch? That's TiN. The purplish-gray one? That's AlTiN. The dark gray? Probably CrN. Each color is shorthand for a specific coating chemistry, and each chemistry is good at a specific job.