Français
4. Properties of case-hardened or carbonitrided parts
Given the important role played by the surfaces of mechanical parts (surface properties determine the resistance of parts to friction, wear and fatigue), we often seek to create surface layers with special properties (particularly high hardness) based on a less brittle (and therefore less hard) core, giving the part as a whole an exceptional combination of properties (resistance to friction, wear, fatigue and toughness).
The following macrostructure is therefore frequently encountered in mechanical engineering:
a surface layer, generally of high hardness (≈ 700 HV or more), in which the material is subjected to high residual compressive stresses (several hundred MPa); the thickness of this layer can vary from 0.1 to several millimeters;
a core, the...
The Ultimate Scientific and Technical Reference
This article is included in
Metal treatments
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Properties of case-hardened or carbonitrided parts
Standardization and specifications
Bibliography
Article M 1 225
Standards and norms
French Standards Association (AFNOR)
Steel standards
- Aciers à dispersoïdes destinés au forgeage à chaud. Demi-produits et barres. - A 33-111 - 10.87
- Aciers de construction non alliés et alliés spéciaux pour cémentation. Nuances. Demi-produits, barres et fils machine. - NF A 35-551 - 7.86
- Aciers pour tempe et revenu. Partie 1 : conditions techniques de livraison des aciers spéciaux (indice...
Directories
Manufacturers – Suppliers – Distributors (non-exhaustive list)
-
Industrial Gases
LIQUID AIR
AIR PRODUCTS. PRODAIR
...
The Ultimate Scientific and Technical Reference
