| Substance | AC |
|---|---|
| Cloth, paper, rope | AC: 11 |
| Crystal, glass, ice | AC: 13 |
| Wood, bone | AC: 15 |
| Stone | AC: 17 |
| Iron, steel | AC: 19 |
| Mithral | AC: 21 |
| Adamantine | AC: 23 |
| Size | Fragile | Resilient |
|---|---|---|
| Tiny (bottle, lock) | Fragile: 2 (1d4) | Resilient: 5 (2d4) |
| Small (chest, lute) | Fragile: 3 (1d6) | Resilient: 10 (3d6) |
| Medium (barrel, chandelier) | Fragile: 4 (1d8) | Resilient: 18 (4d8) |
| Large (cart, 10'x10' window) | Fragile: 5 (1d10) | Resilient: 27 (5d10) |