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CurseForge · Minecraft mod
Arbitrary Alloy
Make any alloy you can imagine.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Arbitrary Alloy release should I use?
Latest stable file arbitraryalloy-1.0.0.jar
Game version 1.12.2
Loader Forge
Arbitrary Alloy arbitraryalloy-1.0.0.jar targets 1.12.2 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Arbitrary Alloy required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
The source does not explicitly classify this release as client-only or server-only.
What else does Arbitrary Alloy arbitraryalloy-1.0.0.jar need?
arbitraryalloy-1.0.0.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Arbitrary Alloy without breaking your instance.
Built for Arbitrary Alloy arbitraryalloy-1.0.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use arbitraryalloy-1.0.0.jar. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside arbitraryalloy-1.0.0.jar. It opens that exact file at the source.
About this project
What does Arbitrary Alloy add?
Introduction
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 craft tools whose stats are dynamically determined by their metal composition — all while watching them slowly corrode over time.
Core Gameplay
Mine → Smelt (carbon ingot) → Re-smelt (decarburize) → Blend (average) → Craft tool → Corrode
| Stage | Description |
|---|---|
| Mining | 12 real-world metal ores (Cu, Sn, Zn, Pb, Ni, Ag, Al, Mn, Cr, Ti, W, Pt) + vanilla iron/gold ores |
| Smelting | Smelt any metal ore → metal ingot with ~93-97% metal + 3-7% random carbon |
| Decarb | Put a carbon-containing ingot back in the furnace → reduced carbon by 20%-50% (hacks furnace input slot NBT.Therefore, unknown alloy ingots may appear when only one metal ingot is fired.) |
| Blending | 2-4 ingots of any composition in shapeless crafting → same count, averaged composition |
| Tools | 2-3 same-composition ingots + sticks → Sword/Pickaxe/Axe/Shovel/Hoe with dynamic stats |
| Corrosion | Tools lose durability over time; accelerated in water (×2), rain (×1.5), humid biomes (×1.3) |
Removed Vanilla Content
All iron/gold tools, ingots, nuggets, blocks, armor, horse armor, iron doors, and their crafting/furnace recipes.
Configuration
Config file: .minecraft/config/arbitraryalloy.cfg
| Category | Key | Default | Description |
|---|---|---|---|
| Carbon | carbonInitialMin |
0.03 | Minimum carbon from ore smelting |
| Carbon | carbonInitialMax |
0.07 | Maximum carbon from ore smelting |
| Carbon | carbonReductionMin |
0.20 | Minimum carbon reduction per re-smelt |
| Carbon | carbonReductionMax |
0.50 | Maximum carbon reduction per re-smelt |
| Corrosion | corrosionInterval |
1200 | Ticks between corrosion checks (60s) |
| Corrosion | corrosionChance |
0.05 | Base chance of durability loss per check |
| OreGen | oreCountCopper ~ oreCountPlatinum |
varies | Veins per chunk for each ore |
| OreGen | oreVeinSize |
8 | Maximum vein size |
| Tools | baseDurabilityIron |
250 | Base durability |
| Tools | baseSpeedIron |
6.0 | Base mining speed |
| Tools | baseDamageIron |
2.0 | Base attack damage |
| Tools | baseEnchantabilityIron |
14 | Base enchantability |
Project description from CurseForge.
Pick your setup
Arbitrary Alloy by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Arbitrary Alloy versions and loaders
arbitraryalloy-1.0.0.jar
20 Jun 2026
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.12.2 · Forge setup Forge1.12.2 release
Looking for an older file? The official CurseForge project page is in Resources.