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SAE AMS 2759/12A Document Information:
Title
Gaseous Nitrocarburizing, Automatically Controlled by Potentials
SAE International
Publication Date:
Nov 1, 2007
Scope:
Purpose
This specification covers the requirements for producing a
continuous compound layer with controlled phase composition by
means of a gaseous process, automatically controlled to maintain
set values of the nitriding and carburizing potentials that
determine properties of the nitrocarburized surface. Automatic
control is intended to ensure repeatability of nitrogen and carbon
content of the compound layer which establishes properties such as
wear and corrosion resistance, ductility and fatigue strength.
Application
The nitrocarburizing process has been used typically for
enhancement of wear resistance and fatigue strength, as well as
corrosion resistance in ferrous alloys but usage is not limited to
such applications. Nitrocarburizing can be selectively applied to
only those areas that require nitrocarburizing.
Specifically, this process is recommended for those applications
where control of phase composition is required.
Classification
The nitrocarburizing process described herein is classified as
follows:
Class 1 - Porosity not exceeding 15% of the thickness of the
compound (white) layer
Class 2 - Porosity above 10% but not exceeding 50% of the
thickness of the white layer
If no class is specified, no limitations shall be placed on the
degree of porosity
Safety - Hazardous Materials
While the materials, methods, applications, and processes
described or referenced in this specification may involve the use
of hazardous materials, this specification does not address the
hazards which may be involved in such use. It is the responsibility
of the user to ensure familiarity with the safe and proper use of
any hazardous materials and to take necessary precautionary
measures to ensure the health and safety of all personnel
involved.
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