This SAE Information Report summarizes the characteristics of carburized steels and factors involved in controlling hardness, microstructure, and residual stress. Methods of determining case hardenability are reviewed, as well as methods to test for freedom from non-martensitic structures in the carburized case. Factors influencing case hardenability are also reviewed. Methods of predicting case hardenability are included, with examples of calculations for several standard carburizing steels. A bibliography is included in 2.2. The references provide more detailed information on the topics discussed in this document.
Rationale: J1975 provides technical background information of potential relevance to the evaluation of case hardenability in carburized grades. As carburized grades in J403, is unchanged from its previous revision, no change is necessary but retains relevance. Updates are not likely to be required in the near term. Reaffirm is indicated.
This technical report is being reaffirmed because it covers technology, products, or processes which is stable but may need revision dependent upon potential J403 revisions.
