Steel name: En 27
  Diagram No.: 3239
  Type of diagram: CCT
  BS designation: En 27
  Chemical composition in weight %: 0.30% C, 0.30% Si, 0.40% Mn, 0.016% S, 0.015% P,
  3.20% Ni, 0.86% Cr, 0.40% Mo.
  Note: Ni-Cr-Mo steel. Austenitized at 850^oC for 30 min. McQuaid Ehn grain size: 8-9
  (ASTM). As quenched grain size: 12-13 (ASTM).
  Source: J. Woolman and R.A. Mottram, The Mechanical and Physical Properties of The
  British Standard EN Steels, Volume 2, The British Iron and Steel Research Association,
  A Pergamon Press Book, New York, 1966, p.182.

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