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SURFACE REV.
VEHICLE J1868 SEP93
STANDARD Issued 1988-02
400 Commonwealth Drive, Warrendale, PA 15096-0001
Revised 1993-09-23
Superseding J1868 JUN90
Submitted for recognition as an American National Standard
(R) RESTRICTED HARDENABILITY BANDS FOR SELECTED ALLOY STEELS
Foreword—This Document has not changed other than to put it into the new SAE Technical Standards Board Format.
1. Scope—Restricted hardenability steels have been in use for some time but the specific restrictions for a
particular grade depend upon customer needs and vary from mill to mill. Such steels are desirable to provide
more controlled heat treatment response and dimensional control for critical parts. Because of increasing
interest in steels with restricted hardenability, the SAE Iron and Steel Technical Committee directed Division 8
to prepare a set of standard steels with restricted hardenability.
In 1993, the American Society for Testing and Materials (ASTM) adopted the twelve SAE restricted
hardenability steels and added ten more. SAE decided to include in SAE J1868 the additional 10 steels.
In general, steels with restricted hardenability (RH steels) wil
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