// multi-utility computation suite · offline · instant · precise
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sci.iron-carbon-phase-diagram Calculator
Calculates equilibrium phase fractions and compositions in the Fe-C binary system at a given temperature and carbon content using the lever rule on the iron-carbon phase diagram. Eutectoid composition is 0.76 wt% C at 727 °C (A₁ line) — steel above this is hypereutectoid and contains proeutectoid cementite.
Inputs
Carbon Pct
Reference formula or conversion factor shown for context.
T C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Results
phase at given T and C
The current phase of the cycle or process.
A1 eutectoid temperature (°C)
The value at the specified point or condition.
A3 temperature (°C)
The value at the specified point or condition.
Acm temperature (°C)
The value at the specified point or condition.
eutectoid composition
Sample size or count used in the calculation.
steel type
The classification or type assigned based on the inputs.