Red Metals: Copper, Brass & Bronze Grades, Properties, and Applications

If you've ever worked with copper wiring, brass fittings, or bronze bushings, you've already worked with red metals. Copper, brass, and bronze are named for their distinctive reddish color, and they show up in more places than most people realize. You'll find them in electrical systems, plumbing, industrial machinery, marine hardware, architectural trim, and more.

This guide breaks down what red metals are, how to choose between them, what they cost, and what Boyd Metals stocks and can do with them.

What are Red Metals?

Red metals are a family of copper-based materials. Copper is the foundation. Brass is copper mixed with zinc. Bronze is copper mixed with tin, sometimes with additional elements like aluminum or manganese.

They look similar on the surface, but they behave quite differently depending on what you need. Choosing the wrong one can mean extra cost, premature wear, or the wrong fit for the job.

All three share some key qualities. They resist corrosion well, they conduct electricity and heat better than most metals, and they're built to last. An estimated 80% of all copper ever mined is still in active use today, which is a testament to how durable and recyclable these materials are.

Copper: Best for Conductivity and Corrosion Resistance

Copper is the purest of the three. It can be used directly in its natural state without mixing in other metals, and it is the gold standard for electrical and thermal conductivity, second only to silver.

Where you'll find it:

• Electrical wiring and bus bars
• Plumbing pipe and tubing
• Roofing and exterior cladding
• Heat exchangers and industrial equipment

When Copper Is the Right Choice

Choose copper when the job is primarily about moving electricity or heat, or when corrosion resistance in a wet or outdoor environment is the top priority. Roofing copper weathers over time into a familiar green patina that architects often specify by design.

If the job also needs to be machined, bent, or shaped under high load, brass or bronze will likely serve better. Copper is soft relative to its alloys.

What Boyd Metals Stocks

For engineers and buyers who need the spec detail:

• Copper Bars (Rounds and Squares) - ASTM B 187, Alloy 110, hard temper
• Copper Bus Bar (Flats) - ASTM B 187, Alloy 110, hard temper
• Copper Sheet and Plate - ASTM B 152, Alloy 110
• Roofing Copper Sheet - ASTM B 370
• Copper Tubing - ASTM B 75, Alloy 122
• Copper Pipe - ASTM B 42, Alloy 122, Schedule 40 and Schedule 80

Contact your nearest Boyd Metals location to confirm current availability and sizing.

Brass: Best for Machinability and Versatility

Brass is what you get when you add zinc to copper. More zinc means more strength and a lighter color. Less zinc means a softer, more copper-like appearance. That flexibility is part of what makes brass one of the most commonly used metals across industries.

Brass machines exceptionally well, meaning it cuts cleanly and precisely. That's why it's the go-to choice for fittings, connectors, and precision parts that need tight tolerances.

Where you'll find it:

• Plumbing and valve fittings
• Electrical connectors and terminals
• Architectural hardware and decorative trim
• Marine hardware
• Machined fasteners and components

When Brass Is the Right Choice

Choose brass when parts need to be machined to precise dimensions, when the application involves marine or wet environments, or when the appearance of a warm golden finish matters in architectural or decorative settings.

Brass is a strong, cost-effective upgrade from pure copper when you need better machinability and a bit more structural integrity.

What Boyd Metals Stocks

For engineers and buyers who need the spec detail:

• Brass Bars (Flats, Rounds, Squares, Half Rounds, Hexes) - ASTM B 16, Alloy 360 Free-Cutting Brass
• Brass Sheet - ASTM B 36, Alloy 260
• Commercial Bronze Sheet - ASTM B 36, Alloy 220
• Brass Tubing  - ASTM B 135, Alloy 330, Drawn General Purpose
• Brass Pipe - ASTM B 43, Alloy 230, Schedule 40 and Schedule 80

Additional brass grades available include C353 Leaded Brass, C464 Naval Brass, and C485 Leaded Naval Brass. Verify specific grade and form availability with your Boyd Metals location.

Bronze: Best for Wear Resistance and Heavy Load

Bronze is copper mixed with tin, and sometimes additional elements like aluminum or manganese. The result is a harder, tougher material than either copper or standard brass, one that holds up under sustained friction, heavy loads, and harsh environments.

If you've ever seen a bushing or bearing that's been in service for years without wearing out, there's a good chance it was bearing bronze.

Where you'll find it:

• Bearings and bushings
• Gears and pump components
• Marine hardware and structural components
• Industrial wear parts
• Valve bodies

When Bronze Is the Right Choice

Choose bronze when the part is going to experience repeated contact, friction, or heavy load over time, especially in industrial or marine settings where corrosion resistance also matters. Bearing bronze (C932) is the most commonly specified grade for this type of application. Aluminum bronze (C954) offers even higher strength and corrosion resistance for demanding structural or marine environments.

If you need something that simply won't wear out, bronze is usually the answer.

What Boyd Metals Stocks

For engineers and buyers who need the spec detail:

• Bronze Bars (Flats, Rounds, Squares) - ASTM B 140, Alloy 316, Half-Hard temper
• Aluminum Bronze Sheet - ASTM B 169, Alloy 614
• Bronze Bushing (Solid Rounds and Tube) - ASTM B 505, Alloy 932, SAE 660 Bearing Bronze
• Continuous Cast Aluminum Bronze (Flats, Rounds, Squares) - Alloy 954, ASTM B 505
• Aluminum Bronze Round Tubing - Alloy 954, ASTM B 505

Boyd's bronze inventory includes C674 Manganese Bronze, C932 Bearing Bronze, and C954 Aluminum Bronze. Confirm form and size availability with your Boyd Metals location.

Quick Comparison: Which Red Metal Is Right for Your Job?

Not sure which one you need? This table cuts to the chase.

When Red Metals Aren't the Right Call

Red metals carry a higher price tag than carbon steel and, in some cases, aluminum. If conductivity, corrosion resistance, or machinability aren't driving factors in your project, there may be a more cost-effective option.

Consider alternatives when:

• You need high structural strength at a lower cost. Structural steel grades will outperform copper alloys here.
• Weight reduction is the goal. Aluminum has a better strength-to-weight ratio than most copper alloys.
• The application is basic and doesn't require what red metals specifically bring to the table.

Boyd Metals also stocks carbon steel, stainless steel, and aluminum if you need to compare options or source multiple materials for one project.

What Affects Red Metal Pricing

Copper is a globally traded commodity, and its market price is the single biggest driver of what you pay for copper, brass, and bronze. Here's what else moves the number:

• The copper spot price. When copper prices go up, all three red metals go up with it.
• Alloy type. Specialty bronze alloys like aluminum bronze and phosphor bronze cost more than standard brass.
• Product form. Drawn tubing and precision bar cost more than cast or plate forms.
• Order size. Standard stocked grades (C110, C360, C932) are ready to ship. Specialty grades may require lead time on smaller quantities.

For current pricing, the best move is to contact a Boyd Metals location directly. Pricing changes, and a quick call or quote request will get you an accurate number fast.

How Boyd Metals Can Process Your Red Metals

Boyd Metals isn't just a supplier. We can cut, shear, and form red metals in-house so the material arrives ready to use. That saves you a step and keeps your project moving.

Cut to Length — Sawing Need bar stock or structural forms cut to a specific length? Our CNC saws handle up to 24" square capacity with miter cutting capability, and this service is available at all Boyd Metals locations.

Sheet Cutting — Shearing Copper sheet, brass sheet, and aluminum bronze sheet can all be sheared to size. Our shears handle up to 1/4" thick and 144" long, with CNC-controlled options for tighter tolerances.

Plate Cutting — Plasma For red metal plate and sheet that requires shape cutting, our high-definition plasma systems handle any electrically conductive material, including copper, brass, and bronze. Table capacities are up to 120" wide and 480" long, with thickness capacity up to 1" on the HiDef system. Tolerances of +/- .0625 are possible.

Bending and Forming — Press Brake If your copper or brass sheet needs to be bent to spec, our press brakes can handle it. We run up to 350-ton capacity with Dynamic Thickness Compensation, which automatically adjusts for material thickness variations to keep bends consistent and accurate. 

Get Red Metals from Boyd Metals

Boyd Metals stocks copper, brass, and bronze at our locations in Fort Smith, AR; Little Rock, AR; Joplin, MO; and Oklahoma City, OK. Every location is locally managed and stocked to handle both standard and specialty red metal orders, with cut-to-length and processing available on site.

Whether you need brass bar for a machining run, bearing bronze bushings for industrial maintenance, or copper sheet for an architectural project, we can get you the right material in the right form.

Request a quote or browse our red metal products at boydmetals.com/products/red-metal/.

If it turns out that this wasn't everything you wanted to know and more, check out our FREE Digital Stock Book for all your processing needs by clicking on the image below.

Our indexed and searchable PDF makes it easy to quickly locate the information you need. 

What's Inside?

• Specifications for industry-standard products
• Common conversion charts and guides
• Available processing services by product type

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