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sci.CCT-cooling-rate-steel Calculator
Calculates transformation temperatures and predicted microstructure from a Continuous Cooling Transformation diagram for a given steel composition and cooling rate. Martensite start temperature Ms ≈ 561 − 474C − 33Mn − 17Ni − 21Mo − 17Cr (Andrews equation) — cooling faster than the critical rate produces martensite without pearlite.
Inputs
Carbon Pct
Reference formula or conversion factor shown for context.
Manganese Pct
Reference formula or conversion factor shown for context.
Cooling Rate C S
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Austenitize T C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Results
martensite start temperature Ms (°C)
The hard microstructure formed in steel by rapid quenching. Higher carbon content raises hardness but reduces toughness.
martensite finish temperature Mf (°C)
The hard microstructure formed in steel by rapid quenching. Higher carbon content raises hardness but reduces toughness.
pearlite finish temperature (°C)
The value at the specified point or condition.
estimated martensite (% at cooling rate)
The hard microstructure formed in steel by rapid quenching. Higher carbon content raises hardness but reduces toughness.
Ms = 561-474C-33Mn
Sample size or count used in the calculation.
microstructure
Reference formula or conversion factor shown for context.