Arbitrary Alloy

Make any alloy you can imagine.

2 Downloads

forgeequipmentgame-mechanicstechnology

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About this Mod

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

Available Versions

Arbitrary Alloy 1.0.0release

MC 1.12.2forge

June 20, 2026

How to Install Arbitrary Alloy on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).

Install Mod

Open the mod browser in the dashboard and search for "Arbitrary Alloy". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forge

Minecraft Versions

1.12.2

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Arbitrary Alloy server crashes on startup – what to do?

Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.12.2). You can switch loaders with one click in the panel.

Is Arbitrary Alloy compatible with forge?

Arbitrary Alloy officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Arbitrary Alloy – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Arbitrary Alloy consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.