Form: This specification presents the requirements for chrome-nickel-molybdenum (8740) steel bars and reforging stock of aircraft quality. Classification: Physical condition: Material shall be of the following physical conditions@ as specified (see 6.2): (A) As forged (B) As rolled (C) Annealed (D) Normalized (E) Normalized and tempered (F) Hardened and tempered?Surface condition: Material shall be of the following surface conditions@ as specified (see 6.2); 1. Black as forged or rolled 2. Pickled or blast cleaned 3. Rough turned 4. Cold drawn 5. Turned@ ground and polished 6. Turned and polished