Red Brass Scrap is a copper-rich brass and copper-alloy scrap category commonly recovered from plumbing components, valves, machinery parts, bearings, pumps and other cast or wrought products.
The term red brass does not describe one universal chemical composition. Different wrought and cast red-brass alloys contain different proportions of copper, zinc, tin and, in some grades, lead.
What Is Red Brass?
Red brass is a family of copper-rich alloys recognized by its reddish or reddish-yellow color and relatively high copper content.
Two useful examples illustrate why red brass should not be defined by one formula:
- C23000 Red Brass: A wrought brass containing approximately 85% copper and 15% zinc.
- C83600 Red Brass: A common cast alloy containing approximately 85% copper and about 5% each of tin, lead and zinc.
Scrap yards may also use Composition Brass or Composition Red Brass as commercial grading terms for qualifying red-brass castings and machinery components.
What Is ReMA Composition or Red Brass?
Under current ReMA specifications, Ebony / Composition or Red Brass includes red-brass scrap, valves, machinery bearings, machinery parts and miscellaneous castings made from copper, tin, zinc and/or lead.
The standard excludes certain other copper alloys and contaminants, including semi-red brass, high-lead alloys, aluminum bronze, silicon bronze, manganese bronze, iron and non-metallic material.
The specification also places size and weight limits on standard pieces unless buyer and seller agree otherwise.
Red Brass vs. Yellow Brass
Red Brass generally contains a higher proportion of copper than common Yellow Brass, which contributes to its more reddish appearance.
Yellow brass typically contains substantially more zinc and usually has a brighter yellow-gold color.
Color can provide an initial sorting clue, but oxidation, plating, surface dirt and alloy variation can make visual identification unreliable.
Because copper content is only one factor in scrap pricing, red brass should not be described as automatically worth more than yellow brass at every yard or under every market condition.
Red Brass vs. Semi-Red Brass
Semi-red brass is a separate commercial alloy and scrap category with lower copper content than many red-brass grades.
ReMA's Composition or Red Brass specification specifically excludes semi-red brass castings containing approximately 78% to 81% copper.
RecyclingMonster tracks Semi-Red Brass Scrap Prices separately from Red Brass Scrap.
Is Red Brass the Same as Gunmetal?
Not necessarily.
The names have sometimes overlapped historically, particularly in international and foundry terminology, but they should not be treated as universal synonyms.
For example, UNS C90500 is formally identified as Gun Metal and is a copper-tin bronze containing substantially more tin than common wrought C23000 Red Brass.
For scrap classification, sellers should identify the actual alloy or commercial yard grade rather than assuming every reddish copper alloy is gunmetal.
Common Sources of Red Brass Scrap
Red Brass Scrap is commonly generated from plumbing, industrial and machinery applications.
Potential sources include:
- Valves and valve bodies
- Water and pump components
- Machinery bearings and bushings
- Industrial castings
- Pipe and plumbing fittings
- Water-system components
- Pump housings and components
- Mechanical equipment
- Manufacturing scrap
- Building renovation and demolition
Not every faucet, fitting or reddish casting automatically qualifies under the ReMA Composition Red Brass specification. The receiving buyer determines the commercial grade.
How Can You Identify Red Brass?
Red brass usually has a reddish-gold or reddish-brown appearance because of its relatively high copper content.
Common characteristics can include:
- A redder color than common yellow brass
- Substantial weight for its size
- No strong magnetic response
- Frequent use in cast valves, bearings and machinery components
A magnet can help identify iron or steel contamination because most red-brass alloys are nonferrous and should not normally respond strongly to a magnet.
However, color and magnet testing cannot determine exact alloy chemistry. Scrap processors may use handheld XRF analyzers or other positive material-identification equipment when accurate alloy separation is important.
Why Does Red Brass Look Red?
The reddish appearance primarily results from its relatively high copper content.
Increasing zinc generally shifts copper alloys toward a more yellow appearance, which is why common yellow brass looks noticeably different from many red-brass alloys.
Surface oxidation, plating and environmental exposure can alter the appearance, so color alone should not be used as a definitive grading test.
Is Red Brass Magnetic?
Red brass itself is generally non-magnetic.
If a component responds strongly to a magnet, it may contain significant iron or steel attachments, inserts or contamination.
That contamination can affect how the scrap yard grades and prices the material.
Does Red Brass Contain Lead?
Some red-brass alloys do contain lead, while others contain very little.
For example, cast C83600 red brass contains approximately 4% to 6% lead, while wrought C23000 Red Brass permits only a very small lead content.
For this reason, sellers should not assume that all red brass is lead-free or that all red brass has the same chemistry.
Industrial buyers may require alloy identification or analysis where lead content affects the intended recycling pathway.
Red Brass Solids vs. Red Brass Turnings
Scrap yards may purchase solid Red Brass and machining turnings under separate grades.
Red Brass Solids can include qualifying castings, valves, bearings and machinery components.
Red Brass Turnings are chips and machining residues generated when red-brass components are cut or machined.
ReMA recommends that red-brass composition turnings be sold subject to sample or analysis because their chemistry can vary.
For current market information, compare RecyclingMonster's Red Brass Scrap Prices and Red Brass Turnings Scrap Prices.
What Can Lower Red Brass Scrap Value?
Material may receive a lower grade when it contains excessive contamination or other alloys.
Potential issues include:
- Iron or steel attachments
- Excessive non-metallic contamination
- Mixed yellow brass
- Semi-red brass mixed into a red-brass load
- High-lead alloys
- Aluminum bronze
- Silicon bronze
- Manganese bronze
- Mixed turnings or machining debris
Scrap yards may maintain separate grades for clean, dirty, contaminated or irony Red Brass.
What Affects Red Brass Scrap Prices?
Red Brass Scrap prices depend on copper content, alloy composition, cleanliness, material form, contamination, quantity, location and buyer demand.
Copper-market conditions are particularly important because copper represents a large portion of most red-brass alloys, but zinc, tin and lead content can also affect downstream value and classification.
For current grade-specific pricing, view RecyclingMonster's Red Brass Scrap Prices.
You can also compare the broader Brass Scrap Prices database and Yellow Brass Scrap Prices.
Always check the material description, location, price unit and last-updated date before comparing quotes.
Is Red Brass Worth More Than Yellow Brass?
Red brass frequently contains more copper than common yellow brass, which can support a different scrap value.
However, there is no permanent price spread between the two grades. Actual yard prices depend on metal markets, alloy composition, contamination, local demand and buyer specifications.
Use current grade-specific price data rather than assuming a fixed premium based only on color.
How to Maximize Red Brass Scrap Value
- Keep Red Brass separate from Yellow Brass.
- Separate semi-red brass where the grade is known.
- Remove iron and steel attachments when economically practical.
- Keep solids separate from turnings and machining chips.
- Remove excessive rubber, plastic and other non-metal contamination.
- Preserve alloy records for industrial quantities when available.
- Use positive material identification for mixed high-value copper-alloy loads.
- Confirm the receiving buyer's Red Brass specification before preparing a large shipment.
Where Can You Sell Red Brass Scrap?
Red Brass is purchased by nonferrous metal recyclers, copper-alloy processors and scrap yards that handle brass and bronze grades.
Use RecyclingMonster's Recycle an Item search and select Red Brass, Red Brass Clean, Red Brass Solids or another applicable grade to locate buyers.
You can also search RecyclingMonster's Metal Recycling Center Directory for nonferrous scrap processors by location.
Have Large Quantities of Red Brass?
Plumbing contractors, industrial plants, machine shops, demolition companies and equipment rebuilders may generate substantial quantities of Red Brass Scrap.
For bulk loads, separate clean solids, contaminated material and turnings before pickup whenever practical.
Ask prospective buyers about alloy analysis, container service, pickup, minimum quantities, size requirements and whether clean, dirty and turning grades receive separate pricing.