View Sample Alloy Digest Data Sheet (PDF)Since 1952, Alloy Digest has been the leading reference for materials property data on metals and alloys used throughout the world. Featuring graphs, charts and tables, these sheets give facts and figures on composition or characterization, physical and mechanical properties, heat treatment, and machinability.AISI 1330 is a through-hardening low-alloy steel for applications where medium hardenability and strength with low to medium toughness are sufficient. It may be used in the unhardened condition or after quenching in oil or water followed by tempering.