| Al₂O₃ oxide | Aluminum 6061/7075 | 0.5–3.3 | Aluminum |
| Atmospheric soiling | Bluestone | unverified | — |
| Atmospheric soiling | Quartzite | unverified | — |
| Atmospheric soiling | Serpentine | unverified | — |
| Atmospheric soiling | Soapstone | unverified | — |
| Biological growth | Basalt | unverified | — |
| Biological soiling | Granite | 1.5–16 | Granite |
| Black crust | Limestone / marble (CaCO₃) | 1–10 | Limestone |
| Black crust | Marble (metamorphic CaCO₃) | 1.25–8 | Marble |
| Char / fire damage | Hardwood (oak, ash, walnut, teak) | 0.67–5 | Teak |
| Contamination | Alumina (Al₂O₃) ceramic | 2–10 | Alumina |
| Contamination | Silicon carbide (SiC) | 1.5–8 | Silicon Carbide (SiC) |
| Copper patina | Copper / bronze | 1–13 | Copper |
| CrTiAlN coating | Tool steel (H13, D2) | 2–6 | Tool Steel |
| Efflorescence | Brick | 0.87–5 | Brick |
| Gel coat / paint | Fiberglass (GFRP — glass fiber reinforced polymer) | 1–10 | Fiberglass |
| Grease / oil | Aluminum | 4–100 | Aluminum |
| Grease / oil | Carbon steel | 16–300 | Steel |
| HT oxide scale | Inconel 625 / 718 | 1.6–10 | Inconel |
| Mill scale | Carbon steel | 2.7–15 | Steel |
| Oxide / BUE | Tungsten carbide (WC-Co cemented carbide) | 1.875–10 | Tungsten Carbide |
| Oxide scale | Stainless steel (304 / 316) | 1.25–8 | Stainless Steel |
| Paint / coating | Wood (general — hardwood or softwood) | 0.75–8 | Oak |
| Paint / epoxy | Carbon steel | 4–30 | Steel |
| Paint / graffiti | Concrete | 4–28 | Concrete |
| Rebar rust | Carbon steel rebar | 16–150 | Steel |
| Red rust | Carbon steel | 16–150 | Steel |
| Release agent | Carbon fiber reinforced polymer (CFRP) | 1–10 | Carbon Fiber Reinforced Polymer |
| Rubber residue | Carbon steel flange face | 2.7–15 | Steel |
| Soiling | Sandstone | 0.8–6.7 | Sandstone |
| Soiling | Slate | unverified | Slate |
| Surface soiling | Alabaster | unverified | — |
| Surface soiling | Mortar / pointing | 2–16 | Mortar |
| Ti oxide scale | Titanium (cp-Ti, Ti-6Al-4V) | 1–8 | Titanium |
| Weld heat tint | Stainless steel (304 / 316) | 3.3–24 | Stainless Steel |
| Zinc coating | Carbon steel | 2–15 | Steel |
