How do I install Сopper Expansion?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does Сopper Expansion work with?

The listing gives Minecraft 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

Home›Java›Mods›Сopper Expansion

ModsJava

Сopper Expansion

Java mod listed for Minecraft 1.20. Downloads from the MC Java Mods app on Android.

by lemysick · on CurseForge

(forge1.20.1) This mod adds a new use of copper, namely crafting copper weapons, armor , tools that have an oxidation system. Copper objects gradually…

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader Forge1 build
Mod loader NeoForge1 build

Minecraft version

Minecraft 1.20.1Newest

Minecraft 1.20.1Newest

⬇ Download for 1.20.1 · Forge ⬇ Download for 1.20.1 · NeoForge

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

https://www.youtube.com/shorts/w2wNr1OfN30

(forge1.20.1)

This mod adds a new use of copper, namely crafting copper weapons, armor , tools that have an oxidation system. Copper objects gradually oxidize during use, changing their texture and characteristics.
When maximum oxidation is reached, copper objects, when instead of further oxidation, impose on themselves a new enchantment
"oxidized" which gives an improvement when a certain level of this enchantment is reached.

The oxidation of copper objects can also be rolled back using the new stand "Oxidizing stand" after which you can get an "Oxidized Residue"
(when oxidizing items with the "oxidized" enchantment, you will get more "Oxidized Residue") and then using it to get "Oxidizing Potion"
, "Oxidizing Potion" is used to quickly oxidize copper blocks or to blacken gold blocks.
Black gold blocks can be converted into black gold, with the help of black gold you can bargain with a brutal piglin and get useful and new resources.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft version listed: 1.20.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as CE.1.3.beta.jar — drop this file into the mods folder
Download size: 718 KB
Download link checked 28 Sept 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.20