Heat transfer through protective materials exposed to molten substances
ASTM F955-15(2021) evaluates heat transfer and material response when protective-clothing materials are exposed to a controlled pour of molten substances.
Pours 1,000 g ± 10% of metal from 305 mm onto a specimen at 70° to horizontal.
Pour temperatures by substance:
| Substance | Minimum pour temperature |
|---|---|
| Eutectic iron | 1,538 °C / 2,800 °F |
| Aluminum alloy 1100 | 760 °C / 1,400 °F |
| Brass alloy 875 | 1,149 °C / 2,100 °F |
Two copper sensors record transmitted heat for 45 s.
Transferred energy (J/cm²) and time to the predicted second-degree burn threshold using the Stoll comparison.
Examines sticking, charring, shrinkage and breakopen after cooling.
Each response is rated on a 1–5 scale.
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