The Iron Chest from the Ala Industrial mod is a 36-slot storage chest for Minecraft Java Edition 26.2 — exactly 9 slots (one row) more than the vanilla copper chest's 27. The upgrade starts from the vanilla copper chest: the copper chest sits in the center of a 3×3 workbench grid, 8 iron ingots fill the 8 surrounding cells, and any oxidation stage works, including a waxed copper chest. Everything stored inside the copper chest carries over into the Iron Chest automatically, so the jump from 27 to 36 slots never dumps a single item on the ground. The Iron Chest is pure storage: no energy, no progress bars, and no machine interface — just 4 rows of 9 slots behind a vanilla-style 3D model with an animated lid and a dedicated metallic open/close sound.

Two Iron Chests placed side by side and facing the same way merge into a 72-slot double chest: the window shows 6 rows, a scrollbar reaches the hidden rows, and shift-click still lands in them. Hoppers, droppers, and item pipes treat the double chest as one container — a filled half simply continues into the other — and a comparator reads the combined fullness from either half. A broken Iron Chest drops itself and spills its contents, waterlogging works like on a vanilla chest, and any pickaxe is enough at hardness 3.0 and blast resistance 6.0. Along the upgrade line — copper 27, iron 36, silver 45, gold 54, electrum 81 — the Iron Chest is the first step for a base that has outgrown the vanilla copper chest. A Stock Display Frame mounted on the front shows the stored count at a glance.