SS 304 vs. 316: Technical Buffing & Mirror Finishing Requirements

The Metallurgy of Luster

In the Vasai East industrial corridor, manufacturers often ask why a 316-grade utensil feels different after buffing compared to a 304-grade. The answer lies in the 2-3% Molybdenum content in SS 316. While this provides superior chloride resistance, it increases the metal's "work hardening" rate during the buffing cycle.

Achieving a #8 Mirror Finish: The 5-Stage Grating Protocol

At RAJA BUFFING WORKS, we utilize a strict 5-stage protocol to ensure a "True Mirror" reflection (classified as #8 finish):

• Stage 1 (Roughing): 80-120 Grit flapper wheels to remove casting scale and surface pits.
• Stage 2 (Smoothing): 220-400 Grit setup wheels to level the "peaks and valleys" of the metal.
• Stage 3 (Pre-Polishing): 600-800 Grit sisal mops with heavy-cut grey compounds.
• Stage 4 (Brightening): 1200+ Grit cotton mops with white diamond rouge.
• Stage 5 (Coloring): High-RPM swansdown mops with blue or green chrome compounds to remove "haze."

Passivation: The Hidden Benefit of Professional Buffing

Professional buffing isn't just cosmetic. The high heat generated during our 20-motor buffing cycle helps in mechanical passivation. By removing free iron from the surface, we allow the chromium to form a stronger Chromium Oxide layer, which is the secret to why our Sauce Pots stay rust-free in the humid Palghar climate.