Pure Copper & its importance
Given copper's competency and extremely favorable characteristics, it's a metal of choice. No matter however promising properties a metal offers, when it comes to electrical setups, one needs to be extremely considerate that the wire is providing maximum safety and efficiency. Pure copper or electrolytic copper is the one prepared by electrolysis. It's the highest grade of copper (more than 99.95%) and mostly used in making copper wires. This purity delivers maximum conductivity, and even the slightest degradation in purity can hinder the conductivity.
A 0.05% of arsenic impurity in copper can hamper about 15% of its conductivity. That's why GNEE use the best-in-grade copper to manufacture the best quality wires and cables. Pure copper provides exceptional thermal and electrical support to wire and comes with ease of fabrication and great strength.
how do I check purity?
Checking copper wire's purity is important for obvious reasons. If the appliance is performing badly or there's some issue with the output even when you've used a pure copper' wire, then maybe you need to get it checked. You can use different testing methods to determine the purity of copper wire.
Certification
For the starters, check for certification that the wires come with. If it's ISO certified, it speaks volumes about the product. There can be an SGS BV certificate or an ISO 9001: 2000 TS16949 certificate - verify any kind of certificate that comes with it.
Magnetism test
Pure copper is not much magnetic and, when objected to a magnetism test, must demonstrate low magnetic properties. When you hold a magnet against pure copper, it shouldn't attract it (given the magnet isn't too powerful.)
Resistance & conductivity
Copper has a resistance of 1.7 x 10^-8 ohm-meters at room temperature, which is why it has excellent electrical conductivity. You already know that pure copper will not be able to conduct electricity efficiently, so you just need to determine the resistivity of the wire and the copper and compare them. If the wire exhibits higher resistivity than that of copper, then there is something unwanted alloyed in the copper.
Density
Density test is one of the most reliable methods - check if the density of the purchased material is correct. The density of copper is 8.92 grams per milliliter. After checking the density, if there's a discrepancy in the value, there must be some impurity in the pure copper you're unaware of.
About us
GNEE is a leading international trader and supplier specializing in a comprehensive range of high-quality copper and copper alloy products. We serve a global clientele across various industries, including HVAC/R, automotive, electronics, construction, and industrial manufacturing.
Our Extensive Product Portfolio
We boast a vast inventory and robust supply chain for virtually all forms of copper products. Our expertise covers:
Copper Seamless Tube / Capillary Copper Tube
Copper Welded Tube / Copper Air Conditioning Tube
Copper Refrigeration Tube / Copper Water Tube
Deoxidized Copper Tube / Copper Coil Tube
Copper Sheets & Plates&Strips：
Copper Strip / Copper Thin Strip
Copper Heavy Duty Strip / Precision Copper Strip
Copper Foil Sheet / Copper Thin Sheet
Copper Thick Plate / Copper Chequered Plate
Copper Shim Stock / Copper Busbar
Copper Round Bar / Copper Square Bar
Copper Hexagon Bar / Copper Flat Bar
Copper Alloy Rod / C11000 Electrolytic Tough Pitch (ETP) Copper Rod
Copper Wire / Bare Copper Wire
Copper Alloy Wire / Oxygen-Free Copper Wire
Copper Profiles / Copper Fittings
Material Grades & International Standards
We provide materials that conform to major international standards to ensure performance, reliability, and global acceptance. Commonly supplied grades and standards include:
Common Grades:
Pure Copper: C10100 (Oxygen-Free Electronic Copper), C10200 (Oxygen-Free Copper), C11000 (Electrolytic Tough Pitch - ETP Copper)
Copper Alloys:
Brass: C26000 (Cartridge Brass), C27200 (Brass), C36000 (Free-Cutting Brass), C38500 (Architectural Bronze)
Phosphor Bronze: C51000
Aluminum Bronze: C60800
Copper-Nickel: C70600 (CuNi 90/10)
Admiralty Brass: C44300
ASTM Standards:
B68 / B68M: Seamless Copper Tube
B75 / B75M: Seamless Copper Pipe
B111 / B111M: Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock
B152 / B152M: Copper Sheet, Strip, Plate, and Rolled Bar
B187 / B187M: Copper Bus Bar, Rod, and Shapes
B301: Free-Cutting Brass Rod
