ΔE 11.8, fair: the same colour family, but not a straight swap. Decayed Metal is a little darker, more saturated than Heavy Metal.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Decayed Metal is a little darker, more saturated than Heavy Metal.
The same difference applies the other way round: Heavy Metal is a little lighter, more muted.
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 Heavy Metal on the colour wheel See Decayed Metal on the colour wheel
All matches: Heavy Metal equivalents · Decayed Metal equivalents