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Radical AI's RAI-939 alloy outperformed industry-standard aerospace material C103…

2026-08-07 · 02:25 UTC ·@Andercot ·1 min read

Brief

Radical AI's RAI-939 alloy is claimed to outperform the long-used aerospace material C103 by 125× in a head-to-head torch test, with Purdue Applied Research Institute confirming superior environmental survivability. Radical AI says it developed RAI-939 in 16 weeks (crediting @josephfkrause) and now plans to scale production to make larger components; C103 dates to the Apollo program.

Why it matters

Radical AI's RAI-939 alloy outperformed industry-standard aerospace material C103 by 125× in a head-to-head torch test, per Radical AI's claim.

Key details

  • Purdue Applied Research Institute confirmed that RAI-939 exhibited superior environmental survivability compared with C103.
  • Radical AI (crediting @josephfkrause) reports it discovered the replacement alloy in 16 weeks and aims to scale up production for larger components; C103 has been in use since the Apollo program.
Source evidence

It used to take years and hundreds of staff to develop a novel material science

@josephfkrause did it in a matter of weeks

The Golden Age of Material Science is upon us and it will unleash wonders

Radical AI (@RadicalAI)

RAI-939 outperformed industry-leading aerospace material C103 by 125x.

In a head-to-head torch test, Purdue Applied Research Institute confirmed that Radical AI’s RAI-939 sample exhibited superior environmental survivability to C103.

C103 has been in use since the Apollo program, but its performance limitations and constrained supply have fueled a decades-long search for a replacement.

Our lab discovered that replacement in just 16 weeks.

Now, we aim to scale up production of the alloy to make bigger components.

Video

— https://nitter.net/RadicalAI/status/2085370368085418189#m