Black Lustre – Blackening Salts for Mild Steel
Available in 25kg double lined UN bags, Prices include delivery to England & Wales.
Please note we only ship to commercial addresses.
“Black Lustre” salts is a free flowing caustic alkaline powder capable of producing a premium quality
black oxide finish on mild steel by the conversion of the surface to Fe3 O4. “Black Lustre” salts produces
a highly decorative and durable black finish which offers no dimensional change.
“Black Lustre” salts find many applications across a wide range of industries including machine tool,
armament and precision instrument manufacturers. Rutpen are the sole manufacturers of the “Black
Lustre” salts which are supplied in 25 kilo UN double lined bags.
“Black Lustre” salts are used in a high temperature immersion process, therefore extreme care is to be
taken during the handling and operation of this product.