Oxygen-free Copper with High Conductivity

Oxygen-free Copper with High Conductivity System 1

Oxygen-free Copper with High Conductivity

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 500 kg

Supply Capability:: 10000 kg/month

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Type	Cu%(WT)	W%(WT)	RWMA	Density	E-conductivity(Min)		heat conduction	thermal expensivity
Class	(Min)	Hardness	((W/mK))
		(Min)
CuW55	45±2	Balance	10	12.30g/cm3	49%IACS	125HB	~260	~11.7(10-6/K)
CuW60	40±2	Balance		12.75g/cm3	47%IACS	140HB
CuW65	35±2	Balance		3.30g/cm3	44%IACS	155HB
CuW70	30±2	Balance		13.80g/cm3	42%IACS	175HB	~240	~9.7(10-6/K)
CuW75	25±2	Balance	11	14.50g/cm3	38%IACS	195HB	200~230	9.0~9.5 (10-6/K)
CuW80	20±2	Balance	12	15.15g/cm3	34%IACS	220HB	190~210	8.0~8.5 (10-6/K)
CuW85	15±2	Balance		15.90g/cm3	30%IACS	240HB	180~200	7.0~7.5(10-6/K)

Production Equipment

750-1500kg main frequency induction copper melting furnace, 80MN water seal extruder, LG60 high speed two-roll cold pilger mill, straight-line wire-drawing machine, copper tube/pipe straightener, polisher, 84′ copper coil winding machine, straightening-cutting & pancake coiling machine, thermoplastic packaging machine, 1.2T continuous bright annealing furnace.

Testing Devices

spectrum analyzer, atomic absorption analyzer, spectrophotometry, analytical balances, metallurgical microscope, eddy current flaw detector, metal tensile testing machine, eddy conductivity instrument.

Process

refined copper — smelting & casting — extrusion — rolling — drawing — straightening-cutting/forming of pancake coil — bright annealing — packaging — finished goods.

Standards

GB/T 1527-2006     Drawn tube of copper and copper alloys
GB/T 16866-2006   Dimensions and tolerances of copper and copper alloy seamless tubes
GB/T 4423-2007     Copper and copper-alloy cold-drawn rod and bar
GB/T 5231-2001    Wrought copper and copper alloys chemical composition limits and forms of wrought products
GB/T 5585.1-2005   Copper or aluminium and its alloy bus bars for electrical purposes—Part 1:Copper andcopper alloy bus bars
GB/T 17791-2007   Seamless copper tube for air conditioner and refrigeration equipment
GB/T 19850-2005   The seamless round copper tubes for electrical purposes
GB/T 26024-2010   Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system
ASTM B280-2008   Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service
EN 12735-1：2001 Copper and copper alloys Seamless,round copper tubes for air-conditioning and refrigeration Part 1:Tubes for piping systems
EN 12735-2：2001 Copper and copper alloy – seamless round copper tube/pipe for air-conditioning and refrigeration system – for equipment
JIS H3300-2009       Seamless copper and copper alloy tube/pipe

Q: For our physics class I need to make an instrument, but we need to be able to predict the frequency (note) that the instrument will make before building it. I think that I am going to make a wind chime out of copper pipe. I have no idea how to calculate the length of the pipe that would be needed to produce a certain note. How would I go about this?: You can simulate your metal pipe using Solidworks, and it can compute the resonant frequency for you. Steel gives a better sound than copper, btw.

Q: My house is approx. 50 yrs old. All of the water lines inside the house are copper. I would guess these copper lines are original to the house. However, when you get to say a toilet or a sink, it turns into a galvanized piece. I'm guessing the copper runs right up to the wall, then they used a galvanized piece through the wall. Why would they do this? I replaced some shutoffs recently and noticed the galvanized was quite corroded inside. Most of the house has very strong water pressure, but a couple of the bathroom sinks are quite a bit weaker.: To restore pressure to the fixtures. Change the nipples to brass with new angle stop valves this should restore the pressure at those fixtures you mentioned. Don't forget to shut off the water at the house shut off valve.

Q: I want to bulk-anneal copper using a kiln. What temp should I program the kiln to?: This Site Might Help You. RE: In regards to metal smithing, what is the optimal annealing temperature of copper? I want to bulk-anneal copper using a kiln. What temp should I program the kiln to?

Q: someone told me my cats rare even though hes a red tabby cuz he has copper colored eyes and i was wondering if its true out of curiosity, i love my baby so much so dont worry its not like i want to sell im just curious: Cats With Copper Eyes

Q: Should I be concerned about this or is it just a normal kind of rust that is happening? The house is only three years old, and this is the only form of green buildup that I see on the copper piping. This pipe, in particular, is one that is open on the end where I see the corrosion, so I‘m assuming it‘s happening from all that draining moisture, but how do I clean it? Thanks for your help, fellow Yahooliganswerers!: Yes, it's just oxidisation. Iron steel rust, aluminium develops a white powdery finish and copper goes green. Nothing to worry about, you might be able just to rub it off or sometimes a scrub with fine wire wool will do it. For a while. If you want to stop it happening again you could lacquer or paint the pipe so air can't get at the metal, or even just wipe it with grease.

Q: Is it normal for air to leak out of a copper pipe on a refrigerator?: Most of the ones you find at the auto store do a respectable job. Just get the cheapest ones you can find. I recently bought 2 for about $10 and they work great. Just make sure you install them correctly, and you're on your way. Good luck!

Q: Copper is usually used to conduct electricity in wires and cables. However the contacts in certain switches and in computer equipment use gold. Explain this.Thanks!: Copper is an excellent conductor, however, with time and heat it will tend to form copper oxide, which is non-conducting. In some switches, just turning them on and off will tend to wipe off this layer as it forms, but this is not always the case. So in certain more critical applications, the contact surfaces will be coated with gold because it does not form an oxide layer and protects the contact surfaces in relays and switches.

Q: is it harmful to touch copper penny with acid eating it: If the acid is eating the penny, it is probably fairly strong. If the penny is a US one minted after 1982, it is zinc on the inside, so most strong acids will dissolve this fairly rapidly when the acids are a few M in concentration. These could be corrosive, so I wouldn't touch. If the penny is solid copper (1981 or before) and still being eaten, get out quickly and don't inhale! Nitric acid is the only common acid that can dissolve copper at room temperature (other compound, such as ferric chloride solution, can as well). When nitric acid dissolves a penny, nitrogen oxides (NO and NO2) are released. These gases are very toxic, but exposure causes no symptoms for a few hours. You may feel fine afterwards, but a few hours later, you could die of pulmonary edema.

Q: seems to be coming from the T connection from dishwasher: Determine if the tee connection is a self tapping connector. These often leak. The best solution is to install an actual tee in the line. Since it is likely that the pipe is in an open area, you could use a compression tee.

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