Will it clean rust of steel

Yes, 1 part acid to 10 parts water and soak the item or spray on with plastic sprayer. Add the acid to the volume of water - not water to acid.

We only recommend using Klean Strip Green Muriatic Acid to brighten concrete, brick, masonry, stone, grout and hard surfaces, and to etch concrete and masonry so that sealers or finishes will adhere. Please call our Klean Strip helpline at 1-800-398-3892 if you would like more information about our products.