Thermite
Aluminum powder and Ferric Oxide powder -- 27:80 ratio by weight.
Al 100 g 27 parts
Fe2O3 296 g 80 parts
iron(II) oxide Ferrous Oxide FeO wüstite
iron(III) oxide Ferric Oxide Fe O haematite - the mineral form (red iron oxide) - rust
2 3
iron(II,III) oxide Ferroferric Oxide Fe O magnetite - Triferric Tetroxide
3 4