HL Stainless Steel Surface Finish (Hairline) – Properties and Applications
HL (Hairline) stainless steel surface finish is a decorative surface type obtained with fine longitudinal lines. It is especially preferred in interior architecture, elevator cabins, and modern façade systems. With its matte, brushed, and scratch-concealing structure, it is both aesthetic and functional.
Product Description:
HL surface finish is a matte coating with characteristic fine and parallel lines, obtained by brushing stainless steel in a single direction using special grinding machines. It is commonly referred to as a “hairline finish” and is processed with abrasives similar to Scotch-Brite.
This surface type provides a clean and modern appearance while adding visual depth and a sense of quality to the applied projects. It also effectively conceals surface imperfections such as scratches, stains, and fingerprints, offering a practical usage advantage.
HL stainless steel can also be described as a brushed, satin, or silk finish and is most commonly applied to 304, 316, and 430 grade stainless steels.
Technical Specifications:
- Surface Finish Code: HL (Hairline)
- Appearance: Unidirectional, long-line, matte brushed surface
- Applicable Thickness: 0.50 mm – 6.00 mm (cold rolled)
- Surface Roughness (Ra): Approximately 0.1 – 0.5 μm
- Material Compatibility: 304, 316, 430 and similar stainless steels
- Scratch and stain concealment: High performance
Applications:
- Elevator cabins and panels
- Interior architectural applications: hotel lobbies, shopping malls, office partitions
- Household products: range hoods, oven panels, refrigerator surfaces
- Architectural façade claddings: projects requiring exterior aesthetics
- Display products and exhibition stands
Advantages:
- Aesthetic and modern appearance
- Easy-to-clean surface
- Ability to conceal scratches and marks
- High corrosion resistance (when used with 304 and 316 grades)
- Suitable for welding, bending, and laser cutting processes