BS-S-151 Complete Document History
Specification for chromium-nickel-molybdenum-vanadium heat-resisting steel billets, bars, forgings and parts (930-1130 MPa: limiting ruling section 150 mm) (Cr 12, Ni 2.5, Mo 1.7, V 0.3)

Complete Current Edition:
   1975 EDITION - REAFFIRMED IN 12/1/2012 - Sept. 30, 1975

Obsolete Revision Information:
   AMD 3783 - AMENDMENT 1 - Dec. 1, 1981