1. The Making, Shaping & Treating of Steels, United States Steel Corporation, 8th Edition.
2. ASTM El12-74 “Estimating the Average Grain Size of Metals”.
3. U.S. Atomic Energy Commission Regulatory Guide 1.44 “Control of the Use of Sensitized Stainless Steel” — (May 1973).
4. ASTM A262-75 “Recommended Practices for Detecting Susceptibility to Intergranular Attack in Stainless Steels”.
5. MIL—S—5000 — Military Specification — “Steel, Chrome-Nickel-Molybdenum (E4340) Bars and Reforging Stock” Weapons Engineering Standardization Office, Naval Air Engineering Center, Philadelphia, Pennsylvania.