by austenite.org

The corrosion tool that thinks like a metallurgist
and speaks in probabilities.

Microstructure-aware, probabilistic prediction of pitting, chloride-SCC and sour cracking — plus cost-aware CRA selection. Runs entirely in your browser.

composition → PRENσ-phase couplingCPT + credible interval Cl-SCC · sour SSCcost-aware selectionCCUS / H₂

Material

Service conditions

Advanced — thermal / weld history (σ-phase)

e.g. 850 °C for 4 h precipitates σ-phase and sharply lowers CPT.

Enter conditions →

Service conditions

Recommends the cheapest grade whose overall risk clears the threshold — avoiding over-specification.

Set a service →

How it works

1 · Composition → microstructure

PREN from real composition; ferrite balance (WRC-1992); σ-phase and sensitization from thermal/weld history.

2 · Microstructure → resistance

An effective-local-PREN coupling degrades the critical pitting temperature (CPT) — the link no standard tool carries.

3 · Probability, not a point

Every output is a distribution with a credible interval; P(pit) = P(CPT < service temperature).

4 · Decision

Chloride-SCC and sour SSC (ISO 15156), then a cost-aware recommendation of the cheapest grade that's safe enough.

About & honest limits

PitCast is a faithful in-browser port of a validated Python research package (124 tests; calibrated against cited literature — e.g. it reproduces an independent 2507 σ-phase CPT loss of 64 °C from a single 2205 anchor). The CPT correlation is leverage-aware and leave-one-out calibrated.

⚠ Screening / research-grade. Constants are cited or clearly flagged; some envelopes (welds, SCC, CCUS/H₂) are rule-of-thumb. Not a substitute for qualified materials engineering, standards compliance, or testing. Do not use unsupervised for design.

© austenite.org · PitCast research preview