Back (Fe-Base)

1.1274 | C100S +N (furnace cooling)

Numeric designation1.1274
Chemical designationC100S
State+N, normalized (furnace cooling)
Etching3% Nital

This hypereutectoid steel (sheet material 2×30 mm) with 0.98% carbon was normalized at 850 °C and slowly cooled in the furnace. The microstructure – typical for this material and heat treatment – is pearlitic with some secondary cementite on the grain boundaries.  The average core hardness is 228 HV0.5.