If treated or stored incorrectly, any grade of stainless steel may discolor or stain. To maintain optimum appearance, the surface should be cared for regularly.
The quality of installation affects the durability and lifespan of stainless steel. Therefore, it is important to make sure stainless steel is in good condition before installation. Normally, giving it a quick clean is enough prior to installation. However, if surface contamination is present, more attention is required. In fields such as aerospace, pharmaceuticals and food handling, an extremely high standard of cleanliness may be required, so extra care should be taken.
Maintenance is required to maintain the quality and appearance of steel. Depending on the environment, it is carried out between one and ten times per year. A proper maintenance routine significantly prolongs the life of stainless steel.
Abrasive cleaning tools should be avoided to prevent alteration of stainless steel finishes. Chloride-containing solutions, such as bleach, should also be avoided.
·Soft cloth and water: suitable for cosmetic issues and general cleaning
·Mild detergent: needed if stains cannot be easily lifted with water
·Glass cleaner: useful for removing fingerprints and similar stains
Despite its design and use, stainless steel can still be susceptible to corrosion, some grades more than others, and especially in corrosive environments. Challenging environments include saline environments, such as coastal areas where regular exposure to sea salt is common and areas where de-icing salts are common during winter. Manufacturing environments, especially in chemical and food industries, may also be subject to corrosive substances.
Stainless steel may also corrode if surfaces come into direct contact with iron or carbon steel. Trace particles from iron or carbon steel will rust on stainless steel surfaces. If left unattended, rust spots may compromise surface passivation and may spread internally. Contamination is common when stainless steel is subject to sparks from nearby welding, cutting, drilling, or grinding of carbon steel.
Treating stainless steel corrosion
·Light rust: all-purpose lubricant or domestic stainless steel cleaners (typically containing calcium carbonate or citric acid)
·Moderate rust: phosphorus acid solutions
·Severe rust: hydrofluoric acid bath (typically performed by professional service providers due to the hazardous nature of chemicals)
Post time: Oct-16-2019