ΔE 20.7, loose: different enough that you should pick on purpose. Aged Metal is much more saturated, warmer than Galvanized Steel.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Aged Metal is much more saturated, warmer than Galvanized Steel.
The same difference applies the other way round: Galvanized Steel is much more muted, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Galvanized Steel on the colour wheel See Aged Metal on the colour wheel
All matches: Galvanized Steel equivalents · Aged Metal equivalents