← Dungeons & Dragons - 5th Edition

Objects

Objects

Substance AC
Cloth, paper, rope 11
Crystal, glass, ice 13
Wood, bone 15
Stone 17
Iron, steel 19
Mithral 21
Adamantine 23
Size Fragile Resilient
Tiny 2 (1d4) 5 (2d4)
Small 3 (1d6) 10 (3d6)
Medium 4 (1d8) 18 (4d8)
Large 5 (1d10) 27 (5d10)

Some particularly resilient objects have a damage threshold where they don't take damage unless they take at least a particular amount from a single attack.

Dungeon Master's Guide 246