Arbitrary Alloy
by MoonCake
Arbitrary Alloy replaces the vanilla iron and gold tools, ingots, nuggets and blocks with a composition-based alloy system for Forge on 1.12.2.
What it does
Ores from real-world metals are smelted with a chosen carbon content, and different blends yield different metals. The crafting table then produces tools whose stats are set by the metal's composition, and those tools corrode gradually over time. Armor, horse armor, iron doors and the crafting and furnace recipes for iron and gold are reworked to match.
Key features
Composition-based alloys
Ores are smelted with a chosen carbon content, and different blends produce different metals.
Tools with composition stats
Tools made at the crafting table take their durability and strength from the metal they are built from.
Gradual corrosion
Items lose condition as time passes, so the metal composition matters over the long run.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Arbitrary Alloy need to be installed on the server?
Which Minecraft version does Arbitrary Alloy support?
In the catalog
Arbitrary Alloy is one of 8,499 Technology mods on ModsFinder, and one of 4,122 Technology mods for Forge. 2,920 mods support Minecraft 1.12.2.
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What the author says
Arbitrary Alloy is a realistic metallurgy mod for Minecraft 1.12.2 Forge. It removes vanilla iron/gold tools, ingots, nuggets, and blocks, replacing them with a composition-based alloy system: mine real-world metal ores, control carbon content through smelting, blend different compositions on a crafting table, and…
Official listing
- Modrinth page
- modrinth.com/mod/arbitrary-alloy
- Owner
- MoonCake
- Published
- 2026-06-20
- Updated on Modrinth
- 2026-06-20
- Facts verified
- 2026-10-15