INTERN MPAPS A-40 PDF

MPAPS A-40 covers the following case hardening processes for ferrous parts:

A. Carburizing and Carbonitriding - thermochemical processes of case hardening that involve the diffusion of carbon or carbon and nitrogen into the surface of ferrous materials at elevated temperatures

B. Nitriding and Ferritic Nitrocarburizing - thermochemical processes of case hardening that involve the diffusion of nitrogen or nitrogen and carbon into the surface of ferrous materials at low temperatures between 930^OF to 1050 ^OF

Restricted Chemical Substances

All product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification.

APPLICATION

This specification covers diffusion based surface hardening of ferrous parts for the purpose of enhancing their fatigue, wear and/or corrosion resistance properties.