# Brass and Copper in Manufacturing
Brass and copper are specified by UNS number, and C360 free-machining brass and C110 electrolytic copper are chosen for opposite properties. A page naming the family without the number has stated nothing a buyer can match.

# Brass and Copper in Manufacturing

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Brass and copper are specified by UNS number, and C360 free-machining brass and C110 electrolytic copper are chosen for opposite properties. A page naming the family without the number has stated nothing a buyer can match.

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These two sit together commercially and pull apart technically, which is why a page treating them as one material serves neither request. The programme argument behind stating grades precisely is in [manufacturing SEO](/manufacturing-seo).

## The grades a drawing calls

**A UNS designation is the specification a drawing carries**, and the C-prefixed numbers cover the copper alloys.

**C360 is free-machining brass** and the highest-machinability metal in common use, chosen where cycle time dominates and strength does not. **C110 is electrolytic tough pitch copper**, chosen for conductivity, and it machines poorly by comparison.

**C260 cartridge brass is the forming grade**, ductile enough to draw and stamp. **C932 bearing bronze covers the sleeve and bushing work** where wear surfaces run against steel.

Choosing between them is a property decision rather than a cost one, and a request naming "brass" has not made it.

## What drives the quote

**Free-machining brass produces short chips and long tool life**, which is why parts in C360 quote at a fraction of the cycle time of the same geometry in stainless.

**Copper is the opposite case**, gummy and prone to built-up edge, so an achievable [tolerance](/glossary/tolerance) and finish depend on tooling and coolant strategy rather than on machine accuracy.

**Lead-free brass is a distinct material rather than a variant.** Regulations on drinking-water components pushed the sector toward low-lead alloys, and they machine measurably harder than C360. A shop quoting a lead-free grade from C360 experience quotes it wrong.

**Dezincification is the corrosion mode brass fails by** in some water services, which is why a resistant grade is specified rather than assumed.

## What a capability page should state

**A capability page must state process, materials, tolerances, capacity, certifications, and industries served**, and the copper alloys belong there by UNS number.

State the grades routinely run, whether lead-free alloys are handled, and the bar sizes held. Where parts are plated or passivated afterwards, name the specification.

The structure is at [capability page structure](/content/capability-page-structure) and the cluster reasoning at [materials](/materials).

## Common questions

**Why is C360 so cheap to machine?**

Lead in the alloy breaks chips and lubricates the cut. That is also why lead-free substitutes cost more in cycle time.

**Is brass suitable for electrical work?**

For terminals and hardware, often. Where conductivity is the requirement, copper is specified and brass is not a substitute.

**What changed with lead-free requirements?**

Drinking-water components moved to low-lead alloys, which machine harder. It is a materials change with a real cost consequence rather than a relabelling.

**Does copper need special tooling?**

Sharp geometry and the right coolant rather than special machines. The constraint is built-up edge, and experience shows in the finish.
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Source: https://manufacturingseo.ai/materials/brass-copper/
Last reviewed: 2026-08-11
Author: ManufacturingSEO.ai