Satin Brass (US4 / SB): Directional Grain Finishing and Clear Epoxies
Engineering Overview: Process guide on Satin Brass (US4 / BHMA 606) architectural lock finishes, detailing 180-grit directional wheel brushing and thermosetting clear epoxy.
Technical & Engineering Specifications
| Substrate | Solid Extruded H59 Brass (CW617N) |
|---|---|
| Grain Texture | 180-240 Grit Fine Linear Brushed Texture |
| Finish Standard | Satin Brass (BHMA 606 / US4 / SB) |
| Sealant Coating | Thermosetting Clear Polyurethane Lacquer |
| Corrosion Resistance | ASTM B117 96h Salt Spray |
Architectural Satin Brass Aesthetic
Satin Brass (US4 / BHMA 606) provides a warm, contemporary brushed golden texture for luxury hospitality and high-end residential interiors.
Precision Finishing Sequence
- Mechanical Brushing: Solid H59 brass profiles are dressed with 180–240 grit abrasive nylon wheels to create uniform horizontal grain lines.
- Ultrasonic Degreasing: Multi-stage chemical cleaning eliminates polishing compound residues.
- Thermosetting Clear Epoxy: Coated with high-clarity electrophoretic clear lacquer baked at 160°C, delivering ASTM B117 salt spray protection of 96+ hours.
Frequently Asked Engineering & Selection Questions
Q1: How is the brushed look on Satin Brass created?
Solid brass is brushed with fine abrasive wheels to create uniform linear grain lines, then sealed with a baked clear lacquer to prevent tarnish.