Scratches in a stainless steel sink should be checked before polishing, because different marks need different handling. Light hairline scratches usually come from cookware, knives, metal trays, rough cleaning pads, or small hard particles left in the bowl. Deeper scratches may come from installation work, countertop cutting, or transport handling. Clean the sink first with warm water and neutral detergent, then dry the surface fully so the scratch depth can be seen clearly.
304 stainless steel is widely used for quality kitchen sinks. According to ASTM A240 stainless steel composition references, 304 stainless steel usually contains 18% to 20% chromium and 8% to 10.5% nickel. Chromium helps form a protective surface layer, while nickel improves corrosion resistance and forming stability. Scratch removal should improve the surface appearance without damaging the brushed stainless steel finish.
For a brushed stainless steel sink, always polish in the same direction as the original grain. Apply a small amount of stainless steel polishing cream to a soft cloth or fine polishing pad, then move in straight lines with gentle pressure. Do not rub in circles, because swirl marks can become more obvious under kitchen lighting.
After polishing, rinse the sink thoroughly and wipe it dry with a clean microfiber cloth. Avoid steel wool, coarse sandpaper, chlorine cleaner, and strong acid cleaner. Stainless steel care guidance from material maintenance references recommends mild cleaning, full rinsing, and drying after washing to reduce stains, water marks, and surface damage.
| Scratch Condition | Suggested Method | Handling Advice |
|---|---|---|
| Light hairline scratches | Soft cloth with polishing cream | Follow the brushed grain |
| Visible surface scratches | Fine stainless steel polishing pad | Use light and even pressure |
| Water stains with scratches | Mild cleaner before polishing | Remove residue before repair |
| Deep scratches | Professional refinishing review | Avoid aggressive sanding |
Scratch repair is easier when the sink surface is controlled well during production. As a stainless steel sink manufacturer, SHUNHAN focuses on 304 material selection, handmade sink forming, welding, grinding, polishing, edge finishing, cleaning, and final inspection. A stable brushed surface needs even grain direction, smooth corners, neat weld treatment, and protective packaging before shipment.
For wholesale sink orders and project supply, our team can support top mount sinks, undermount sinks, drainboard sinks, Custom Stainless Steel Sinks, and OEM/ODM customization. We can also help review thickness, bowl depth, installation type, surface finish, packaging method, and application scenario before production.
Share your sink size, finish requirement, target market, and order plan with our team. We can recommend a practical stainless steel sink solution for kitchens, apartments, hotels, restaurants, and commercial preparation spaces.
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