440 stainless steel is a steel alloy that contains chromium and is typically used to make cutlery. 440 stainless steel is corrosion-resistant, inexpensive, and, when sharpened, can keep an edge longer than other types of steel. There are four types of 440 stainless steel: 440A, 440B, 440C, and 440F. 440A contains the least carbon of the groups, while 440C contains the most carbon and is used to make not only kitchen knives, but also replica swords and other decorative weaponry. 440 stainless steel can be polished with a specialized stainless steel polishing compound, which can be purchased at a hardware store.
Things You'll Need
Non-abrasive detergent or soap
Stainless steel polishing compound
Mix the non-abrasive detergent or soap into the warm water. Do not use an abrasive detergent as this may cause scratches.
Soak the sponge in the soapy water and apply to the stainless steel surface to wash off any dirt and grit.
Rinse the stainless steel with plain water to wash off any soap residue, then dry the stainless steel surface with the towel.
Put on the rubber gloves to avoid leaving fingerprints on the stainless steel surface.
Apply several drops of stainless steel polishing compound to the clean rag.
Rub the rag with the polishing compound over the stainless steel surface, using light strokes in the direction of the polish lines or "grain."
Wipe the stainless steel surface clean with a dry towel to complete the polishing process. Repeat steps 5, 6, and 7 as needed to remove deeper scratches and stains.