However, ISO 2081 no longer ties specific corrosion resistance to color; you must specify required hours to white/red rust separately (e.g., "≥12 h to white rust").
on iron or steel parts, typically used for fasteners and small hardware Specification Breakdown din 50961 fe zn 8b
: Prevents "white rust" (oxidation of the zinc itself) and increases the durability of the finish. However, ISO 2081 no longer ties specific corrosion