MachineCalcs
Soak, case depth, martensite start and temper — composition to final hardness

Heat Treatment Planning Suite

Plan a quench-and-temper from the steel up: austenitizing soak, carburized case depth, martensite start from composition, then temper to the target hardness.

View workflow map All workflow suites
Entry intents heat treatment calculator quench and temper calculator case hardening depth calculator martensite start temperature calculator tempering temperature calculator austenitizing soak time calculator retained austenite calculator

Workflow map

Start at the stage that matches the job in front of you; each stage links directly to the calculators and lookup tools that support it.

Full tool list
  1. 1

    Soak and case-harden

    Hold the austenitizing soak for the section, then drive the carburized case to depth — both from the time-at-temperature relations.

    Heat Treat Soak Time Calculator Carburizing Case Depth Calculator
  2. 2

    Quench — predict the structure

    Martensite start from composition (Andrews), and how much austenite is left at the quench temperature (Koistinen-Marburger).

    Martensite Start Temperature Calculator
  3. 3

    Temper to hardness

    Trade temper time against temperature with the Larson-Miller parameter, then cross-read the hardness scales.

    Larson-Miller Parameter Calculator Hardness conversion chart Reference

Tools in this workflow

Calculators come first, followed by lookup tools and reference pages when this workflow needs tabular data.

All Materials
Calculator Heat Treat Soak Time Hour-per-inch soak rule with austenitize/temper/anneal floors from the governing section thickness. Calculator Carburizing Case Depth Harris d = K·√t case depth from carburizing time and temperature, effective-case estimate and time for a target depth. Calculator Martensite Start Temperature Ms from steel composition (Andrews 1965) plus martensite fraction and retained austenite at the quench temperature (Koistinen-Marburger). Calculator Larson-Miller Parameter Creep time-temperature parameter LMP = T(C + log t)/1000 with an equivalent-time trade at a what-if temperature. Reference Hardness conversion chart

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