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Publication series 2 — Energy & Product

Materials With Receipts: 4,744 Measured Points from the ITER Handbook

Our structures are designed against curated measurements, not textbook constants.

Every thermal and structural analysis in the MetroVolt series draws on a curated extraction of the ITER Material Properties Handbook: 4,744 unflagged measured data points across 35 materials, shipped inside the open deposit.

The science

Reactor design fails quietly when material properties are single-number assumptions. The deposited basis carries per-point scatter for the properties that matter — thermal conductivity, yield strength, mean thermal expansion — with data-quality flags honored and an n > 2 rule per property curve. The plasma-facing and structural analyses (KX-3/KX-4 class) run on those measured curves directly.

The vessel material itself — a CrMoNbV high-entropy-alloy class — is carried against an explicit ≈36-dpa capability qualification target at the design dose: a stated materials-programme requirement, cleanly separated from the demonstrated database that everything else runs on.

Why it matters

Due diligence teams ask one question of every engineering claim: against what data? MetroVolt's answer is a folder in the deposit. Measured scatter in, honest margins out — and the one place the design leans on future qualification is labeled as exactly that.

The numbers

Curated dataset4,744 unflagged points · 35 materials
SourceITER Material Properties Handbook (curated extraction)
Properties driving designk(T) · yield(T) · expansion(T)
Vessel classCrMoNbV HEA — 36-dpa qualification target
Where it livesinside the open deposit (common/)
Straight answersThe HEA vessel qualification at 36 dpa is a target, not an achieved certification — stated in the series and in this paper's own table.
Every figure in this paper traces to the openly deposited 81-simulation programme (S01–S81) behind the Kronos MetroVolt four-paper design series — data and code at DOI 10.5281/zenodo.21248916 (CC BY 4.0). Read the series, run the code, check us.
Kronos MetroVolt is a conceptual design study. Quantitative values are simulation-derived and carry the feasibility gates stated in the series; Tier-2 flagship-code confirmations are deposited as runnable decks pending HPC execution. This document is informational and is not an offer of securities. © 2026 Kronos Fusion Energy, Los Angeles.