Brass

Brass is an alloy both added by RedPower 2 and GregTech. It is used for several machines in both mods.

Usage
Brass Ingot:
 * Sonic Screwdriver
 * Item Detector
 * Retriever
 * Kinetic Generator
 * Regulator
 * Pneumatic Tube
 * Assembler
 * Support Frame
 * Frame Motor
 * Fluid Pipe
 * Brass Gear
 * Blulectric Engine

Brass Plate
 * Mixed Metal Ingot
 * Automatic Wiremill
 * Brass Machine Hull

Trivia
It is not a bug that RedPower 2 uses Tin instead of Zinc for it's Brass recipe: “Brass is copper and zinc…” Which is great, if that was all there was to the story. The distinction between brass and bronze is a lot fuzzier now, with lots of brasses and bronzes that contain neither zinc nor tin, or some combination of both. The primary distinction is that bronze is meant to be cast, while brass is generally intended for machining (which means “being cut by sharp tools”). Brass is certainly the metal I intended to add. Which brings us to Tin. Why Tin? Because tin has more secondary uses, and I’m trying to avoid making headaches for IC² users. Imagine if instead of generating Tin, which could be shared with IC² using the ore dictionary, RedPower actually generated Zinc instead? Two white metals, virtually indistinguishable but incompatible. And no, I’m not going to be renaming brass to bronze, or sharing bronze with IC²." -Eloraam, Creator of Redpower 2