Frequent question: What grade of copper is in electric motors?

The main grade of copper used for electrical applications is electrolytic-tough pitch (ETP) copper (CW004A or ASTM designation C11040). This copper is at least 99.90% pure and has an electrical conductivity of at least 101% IACS. ETP copper contains a small percentage of oxygen (0.02 to 0.04%).

What kind of copper is in electric motors?

The copper content varies among different types of motors, while small motors have a higher percentage of copper per weight than heavy motors. On average, fractional electric motors are 9-10 percent copper by weight. AC motors average 7-9 percent copper; DC motors have 15-18 percent copper content.

What are the different grades of copper?

Narrowing in on copper

There are four primary categories of copper scrap: Bare bright copper wire is defined as clean, bare, uncoated, unalloyed copper wire, not smaller than No. 16 gauge wire. Bare bright also should be free of copper tubing, burnt copper wire and nonmetallics.28 мая 2014 г.

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What is #1 insulated copper wire?

#1 insulated copper wire consists of wire or cable that is clean, unalloyed, uncoated or untinned. It needs to be plastic insulated, or a gauge thickness of 16 or larger, all ends being cut off, insulation does not need to be stripped.

What is considered number 2 copper?

#2 Copper. Scrap copper that has a dirty appearance falls under the #2 copper grade. … Any unalloyed wire or pipe that has solder, paint, coating and other types of tarnishing falls are classified as #2 copper. Copper fittings with oxidation are generally accepted as long as the damage is not extreme.

What is the difference between bare bright copper and #1 copper?

Bare Bright Copper

It refers exclusively to bare, uncoated and unalloyed wire or cable – no thinner than 16 gauge in thickness – which is of #1 copper quality. … This includes any visible oxidation, and very negligible amounts of patina on the copper are allowable.

How much is an electric motor worth as scrap?

Scrap Metal Recyclers Adelaide Turn Scrap Into Cash.MetalPrice (per kg)Copper Domestic price$5.75 per kgCopper Wire – PVC coated price$2.50 per kgElectric Motors price$0.60 per kgLead price$1.50 per kgЕщё 14 строк

What is the purest form of copper?

Certified oxygen-free high-conductivity copper (Electronic Grade, UNS C10100) contains a minimum of 99.99% Cu, making it the purest metal in common use.

Is it worth stripping copper wire?

If you chose to strip it, you will end up with 90 pounds of copper don’t forget 10 pounds in plastic waste and in today’s market you will get $1.90 per pound for stripped copper wire so your 90 pounds will net you $171.00 difference of $21.00 between stripping it or selling the way it is, just want to mention one thing …

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What is the most common form of copper?


  • Chalcopyrite. Chalcopyrite is copper iron sulfide, and is the most common copper mineral. It has a brassy yellow colour, but tarnishes. …
  • Bornite. Bornite is bluish-purple in color. It is a common copper ore, usually together with chalcopyrite.

What is #2 copper worth today?

CopperCopperPrice/lb.#2 Tubing (paint/solder/burnt wire)$2.60Tin Plated (wire/bus)$2.60Enamel Coated (wire/bus)$2.60Light Copper (used roofing/pots)$2.10Ещё 4 строки

Where can I find thick copper wire in my house?

Here are some of the best places to find and collect this highly sought-after material.

  1. TVs and Monitors. …
  2. Most electronics have insulated wires inside the metal housing, including laptops, printers, radios, and DVD players. …
  3. Desktop towers are a great source for scrapped insulated copper wire. …
  4. Large Appliances.

What is dirty copper worth?

Current PricesSTEELPrices Per PoundCopper Wire 70% (#1 INS)$1.32Copper Wire 60% (#2 INS)$0.84Copper Wire 30% (#3 INS)$0.33Dirty Copper$0.00Ещё 46 строк

Will copper prices go up in 2020?

Bank of America analysts on Friday increased their price forecast for copper in 2020 by 5.4% to $5,621/t, while keeping the 2021 projection unchanged at $6,250/t. BofA metals analysts said that while demand had collapsed due to the coronavirus pandemic, a rebound of activity in China was a positive sign for copper.