What is the Heat Treatment multi-solver?

Heat Treatment is a guided workflow that chains 2 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.

Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.

Chemistry & Materials Pack · Multi-Solver

Heat Treatment

Cooling & hardness. This multi-solver chains 2 solvers into a single guided workflow — run each step in order and carry the result forward.

Workflow steps

phase-diagram
→heat-3d

or unlock everything with Pro →

Phase Diagram

open full solver →

Phase Diagram (Water)Live

solid, liquid, gas

Controls

Presets

Temperature (°C)

Pressure log₁₀(kPa)

A phase diagram maps which state — solid, liquid, or gas — a substance takes at each temperature and pressure. The lines are phase boundaries; cross one and the material transforms. All three meet at the triple point, and the liquid-gas line ends at the critical point beyond which liquid and gas become indistinguishable.

▶ Run in Python

Data Inspector

Phaseliquid

Temperature25 °C

Pressure100 kPa

Governing equation

\frac{d P}{d T} = \frac{L}{T Δ V}, T = 298.1 K, P = 100 kPa

Reading this result: Liquid: warm enough to melt yet below the boiling line at this pressure, so the stable state is liquid water.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

↓

Heat 3d

open full solver →

3D Heat Diffusion StudioLive

3D finite difference · ∂u/∂t = α∇³u

Controls

Speed1×

Presets

Diffusivity α

▶ Run in Python

Data Inspector

Grid40³

Cells64,000

SchemeExplicit FD

Governing equation

\frac{\partial u}{\partial t} = 0.12 \nabla^{2} u = 0.12 (u_{xx} + u_{y y} + u_{z z})

Reading this result: Heat spreads outward at a rate set by the diffusivity — each cell relaxes toward the average of its six neighbors every step.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

Need a private, branded version?

We build custom solvers and workflows for labs, firms, agencies, and courses — your parameters, your branding, your data.

Explore Custom Solver Sets →

More in the Chemistry & Materials pack

Reaction Engineering Kit Reactor Designer Distillation Column pH & Buffer Lab Electrochem Cell Combustion Analyzer Gas Process Kit Polymerization

Frequently asked questions

What is the Heat Treatment multi-solver?: Heat Treatment is a guided workflow that chains 2 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.
Is it free to use?: Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.