Foundry products
since 1879

ALSIBLOCK 3/500 – Modifying Flux

Alsiblock 3, 500 g tablets, is a modifying flux which release Sodium into the melt, holding for a longer time the modification status of eutectic Aluminium-Silicon (6-13%) alloys, in sand and gravity die-casting alloys. The product should not be immersed but only left on a dross free surface of the melt in crucible or reverberatory holding furnaces.

Packaging and storage

500 g tablets in 20 kg boxes.


The product is hygroscopic. Store in a dry storage and away from heat sources. Close the package after use. If stored properly the product has a shelf life exceeding 12 months.

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