How to Identify Different Grades of Scrap Copper

Scrap copper is one of the most valuable metals in the recycling world. Its high demand, excellent conductivity, and ability to be reused without losing quality make it a top-paying material at scrapyards. But here’s the catch: not all copper is worth the same.

Scrapyards classify copper into a variety of grades each with its own characteristics, level of purity, and payout. If you walk in without knowing what you have, you may leave a lot of money on the table.

This guide will walk you through all the major copper grades, how to identify them, what affects their value, and practical tips to maximize your return.

Why Copper Grading Matters

Understanding scrap copper grades is crucial for several reasons:

• Higher profit: Clean, high-grade copper can be worth 2–3 times more than mixed or contaminated copper. 
• Faster processing: Sorting your copper before selling speeds up transactions. 
• Environmental impact: Proper identification improves recycling efficiency and reduces waste. 
• Avoid disputes: Knowing the grades prevents low-ball offers from unscrupulous buyers.

Major Scrap Copper Grades and How to Identify Them

Scrap copper is typically classified into two main categories:

1. Bare Bright & Clean Copper 
2. Copper Wire & Tubing 
3. Copper Alloys and Mixed Grades 

Below is a breakdown of each grade in detail.

1. Bare Bright Copper (Bright & Shiny Copper Wire)

This is the highest-paying copper grade.

How to Identify Bare Bright Copper

• Must be 99.9% pure copper 
• Wire is uncoated, unalloyed, and free of insulation 
• Has a bright, shiny copper color 
• No corrosion, solder, or tarnish 

Common Sources

• Electrical wiring 
• Power cables (after stripping) 
• Building wire 
• Bus bars 

What Hurts This Grade

• Burnt wire (turns black) 
• Any insulation or coating 
• Dirt, paint, oil, or oxidation

2. #1 Copper (Clean Copper Tubing or Wire)

A high-grade copper, but slightly below Bare Bright.

How to Identify #1 Copper

• Clean, uncoated solid copper pieces or tubing 
• Slight tarnish or discoloration is acceptable 
• No solder, paint, or grease 
• No insulation 

Common Sources

• Plumbing pipes 
• HVAC copper tubing 
• Uncoated wire that isn’t shiny enough for Bare Bright 

What Lowers It to #2

• Presence of solder joints 
• Heavy tarnish 
• Paint or residue

3. #2 Copper (Contaminated or Painted Copper)

A mid-level grade with broader criteria.

How to Identify #2 Copper

• Copper that is dirty, painted, oily, or corroded 
• Copper tubing with solder 
• Burnt copper wire 
• Copper with heavy tarnishing or residue 

Common Sources

• Old plumbing pipes with fittings 
• Drip-edge roofing copper 
• Burned wiring from fire damage 
• Copper with enamel coating 

Why It Pays Less

Contaminants require extra processing, reducing the metal’s value.

4. #1 Insulated Copper Wire

This is insulated wire that contains high-purity copper inside.

How to Identify #1 Insulated Wire

• Thick, heavy insulation 
• Copper inside is #1 grade when stripped 
• Copper must be 16 gauge or thicker 

Common Sources

• Communication lines 
• Household wiring 
• Extension cords 
• Thick appliance cables 

Factors That Affect Value

• Copper content percentage 
• Thickness of the copper versus insulation 
• Cleanliness of the wire 

5. #2 Insulated Copper Wire

Lower-grade insulated wire with less copper content.

How to Identify #2 Insulated Wire

• Thin wires with low copper content 
• Copper inside may be #2 grade or mixed metal 
• Common in electronics or appliance cords 

Common Sources

• Speaker wires 
• USB and charging cables 
• Phone cords 
• Computer wires

6. Communication Wire / Data Wire

A subcategory of insulated copper wire.

How to Identify Data Wire

• Very thin copper strands 
• Often found in Ethernet, telephone, or coax cables 
• Low copper percentage leading to low payout

7. Copper Roofing / Flashing

This includes copper sheets used for building protection.

How to Identify Roofing Copper

• Thin copper sheets or rolls 
• Often tarnished green from exposure 
• May contain tar, nails, or roofing cement 

Grade Impact

• Clean pieces may qualify as #1 
• Dirty or glued pieces fall to #2 

8. Copper Pipe With Brass Attachments (Mixed Copper)

Mixed scrap with multiple metals attached.

How to Identify It

• Copper pipe or tubing 
• Ends capped with brass fittings, valves, or connectors 

Tip to Improve Value

Remove brass ends with a pipe cutter to increase grade and payout.

Simple Tests to Identify Copper Grades

1. The Magnet Test

Copper is completely non-magnetic, so a magnet should never stick to it. If the magnet clings to the material even slightly, it’s likely a copper-coated metal such as steel, not pure copper. This simple test helps you quickly separate valuable copper from low-value imposters.

2. The Color Test

Pure copper has a natural reddish-orange color, which makes it easy to identify when clean. Over time, copper can tarnish, turning brown or dark, which is still acceptable for higher grades. However, burnt copper often turns black due to heat damage, and this discoloration causes it to be downgraded to #2 copper. Observing the color gives you a fast visual clue about its quality and grade.

3. The Scratch Test

Using a knife or metal tool, gently scratch the surface of the copper. High-quality copper will show a bright, clean orange streak underneath, indicating purity. If the scratch reveals dull, mixed, or silvery tones, the material may be an alloy or lower-grade copper. This test is especially useful for identifying questionable or heavily tarnished pieces.

4. Insulation Check

Copper wire with heavy or thick insulation contains less recoverable copper, reducing its value. Scrap yards pay based on the amount of copper inside, not the weight of the insulation, so wires with more plastic coating are graded lower. Evaluating the thickness and type of insulation helps you estimate how much copper you’ll actually get paid for.

Tips to Maximize the Value of Your Scrap Copper

1. Remove Brass, Steel, and Solder

Copper that has other metals attached such as brass fittings, steel screws, or soldered joints will be downgraded because it requires extra processing. By removing these attachments before selling, you increase the purity of your copper and ensure it qualifies for a higher grade, which means a better payout at the scrapyard.

2. Avoid Burning Wire

Burning insulation off copper wire might seem like a quick way to clean it, but it actually harms the copper and significantly lowers its value. Burnt copper turns black, becomes brittle, and is immediately downgraded to #2 copper. In many areas, burning wire is also illegal due to environmental and health hazards, so it’s always better to strip it manually or use proper tools.

3. Sort Your Copper Before Going to the Yard

Sorting your copper into categories like bare bright, #1 copper, #2 copper, and insulated wire helps you avoid being paid a mixed or lower-grade price. When you separate your materials ahead of time, the scrapyard can grade them accurately, and you have full control over how each type is valued. This organization can make a noticeable difference in your total payout.

4. Strip Wire Only When Profitable

Not all wire is worth stripping. Thick, heavy-gauge wire contains enough copper to justify the labor or tooling cost of removing insulation, making it profitable. Thin wire, however, often contains so little copper that the effort isn’t worth the return. Knowing when stripping pays off saves you time and ensures you maximize your overall value.

5. Take Photos Before Selling

Taking clear photos of your sorted copper before heading to the scrapyard can protect you if there’s ever a disagreement about grading or weight. Some yards may downgrade materials incorrectly, but having visual proof of the condition and type of copper helps you dispute any errors. It’s a simple step that can safeguard your earnings.

Common Mistakes to Avoid

• Assuming all copper wire is bare bright 
• Burning off insulation 
• Leaving fittings attached 
• Mixing copper with brass or aluminum 
• Not checking local scrap prices before selling

Final Thoughts

Identifying copper grades becomes simple once you know what to look for. With careful sorting and cleaning, you can significantly increase your profits at the scrapyard. Whether you’re a contractor, scrapper, recycler, or simply clearing out old materials, understanding copper grades gives you a valuable advantage.