ΔE 8.6, close: similar, with a visible difference side by side. Oily Steel is a little darker than Burnt Iron.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Oily Steel is a little darker than Burnt Iron.
The same difference applies the other way round: Burnt Iron is a little lighter.
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 Burnt Iron on the colour wheel See Oily Steel on the colour wheel
All matches: Burnt Iron equivalents · Oily Steel equivalents