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copper

Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement.
Copper is one of the few metals that can occur in nature in a directly usable metallic form (native metals). This led to very early human use in several regions, from c. 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, c. 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create bronze, c. 3500 BC.In the Roman era, copper was mined principally on Cyprus, the origin of the name of the metal, from aes сyprium (metal of Cyprus), later corrupted to сuprum (Latin). Coper (Old English) and copper were derived from this, the later spelling first used around 1530.Commonly encountered compounds are copper(II) salts, which often impart blue or green colors to such minerals as azurite, malachite, and turquoise, and have been used widely and historically as pigments.
Copper used in buildings, usually for roofing, oxidizes to form a green verdigris (or patina). Copper is sometimes used in decorative art, both in its elemental metal form and in compounds as pigments. Copper compounds are used as bacteriostatic agents, fungicides, and wood preservatives.
Copper is essential to all living organisms as a trace dietary mineral because it is a key constituent of the respiratory enzyme complex cytochrome c oxidase. In molluscs and crustaceans, copper is a constituent of the blood pigment hemocyanin, replaced by the iron-complexed hemoglobin in fish and other vertebrates. In humans, copper is found mainly in the liver, muscle, and bone. The adult body contains between 1.4 and 2.1 mg of copper per kilogram of body weight.

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  1. A

    galvanised steel reducer to copper

    Hi Guys, I am looking to replace radiator as the old threaded valve is shot on this old building but it is attached to what looks like 1 inch galvanized steel. I was hoping to freeze the pipe at the bottom (see pic) cut and reduce into 15mm copper, any ideas if there is a suitable adaptor out...
  2. J

    Re-routing copper pipe in walls?

    Hi, remodelling a downstairs cloakroom and discovered that the old installation had the water pipe to the toilet through a copper pipe chased directly into the wall (not encased in anything like plastic piping). It's not leaking and the pipe doesn't seem to be corroded, but thinking it might be...
  3. C

    Copper pipes on block and beam

    Hi all. New to this. I Will Try and explain best I can. Large New build (2.5yrs old) with block and beam flooring. Then Membrane Then celotex Then membrane Wet system underfloor heating In approx 2-3” of screed I think Then tiled throughout 15mm Hot and cold copper pipes, felt lagged...
  4. A

    External copper pipe insulation

    I had a combi boiler fitted in the garage recently which has meant a lot of copper pipe external to the house and throughout the garage. Metres of it. None of it has been lagged what should I do and or have expected from the installer.
  5. S

    Drilling into copper HW tank.

    I'll be fitting a couple of Essex [email protected] to my HW tank soon. required hole is 38mm. I know these tanks are quite thin and can rip easily so what's the best way to drill them with a hole cutter?
  6. A

    Extend copper piping

    Hi, i made the daft decision to fit my own new bathroom - like for like replacement of suite, no moving pipes. i have reached thenpoint kf tiling over my shower pipes to fit my new shower and i think they are too short. They only protrude from the tile around 10-15mm and this needs to be at...
  7. S

    URGENT Upgrade gas supply line from galvenised steel to copper?

    I'm wondering if a failed gas line test indicates a gas leak. If so, is it a requirement to upgrade gas supply line from galvanised steel to copper? Would you replace all gas pipes? What would you be looking at in terms of cost in Victoria Australia?
  8. P

    Gas pipe under loft insulation.

    The copper gas pipe to my boiler in the loft runs between joists and sits on the plasterboard. I understand that it should not be covered by insulation. Why? Is it satisfactory to create a dome over the pipe with upside down guttering and then put fibreglass insulation over the top please?
  9. J

    Why hot water copper pipe is 22mm and cold is 15mm?

    Hi All, I have this silly question. Water pressure for hot water is a bit low while cold water has a decent pressure. Why do they put 22mm copper pipes for hot water? It seems detrimental for already low pressure. Best regards
  10. M

    URGENT My t valve seems to be too thick for my shark bite cylinder

    I cannot get my shark bite fitting to fit over the white supposed to be a half inch copper T valve is it because it’s corroded just seem to be too thk
  11. D

    Changing from Plastic to Copper at Shower Valve

    Hopefully a simple question for someone in the know, but why do some plumbers/installers run everything in plastic pushfit (Hep2O or JG) and then swap over to copper for the last bit before a shower etc? I see this being done on installations where there is a pushfit adaptor available for the...
  12. Antony_0

    20mm MDPE to 25MDPE (and 22mm Copper)

    Hi all, we're doing some renovation work to our property and we wanted to install a sauna house (includes shower) in the garden, irrigation system and outside tap. I've ran a 25mm MDPE from the inside utility room where the main stopcock comes into the house. I originally thought that it was a...
  13. B

    Placement of a copper Cylinder for best effect

    I Cannot installa unvented cyclinder because my waterflow rate is too low. I am therefore thinking of using the old attic tank feeding a cylinder system. My query is, Which is the better of two cylinder placements. Water fed to a cylinder in the loft with hot water fed from top of cylinder...
  14. B

    Copper connection on backflow

    Hi, trying to remove copper pipe from sprinkler back flow. Used blow torch to soften solder. Did not melt what ever they used on connection. What could they have used instead of solder ? Thank You . BH
  15. M

    How to join copper drain pipe

    I wish to join a 3" copper drain pipe that runs from roof vent to sewer. Any secret fitting that would make this easy without solder?
  16. N

    Scrap Copper (20 Characters!)

    Over the years I have collected pipes and a few Hot Water Cylinders from my DIY efforts. Having now accumulated enough to become a space problem I really should get rid. Is pipe thats been painted going to be of interest to the scrap metal merchants? Should I be removing the Immersion Heaters...
  17. T

    Copper pipe in wall what is it?

    Help please:) We are in the process of taking down a stud wall between our kitchen and dining room. As we are taking the plastebaord down we have come across a copper pipe (literally situated in the middle of the wall..approx 16mm) All the downstairs radiators are on show and run up the corner...
  18. R

    MDPE to copper lever valve

    I would like to fit a full bore quarter turn valve that takes 25mm MDPE on the inlet and 22mm copper on the other side. I can't seem to find one, but surely they exist - has anyone come across one? I need to replace a seized stopcock on a 25mm blue MDPE supply pipe to 22mm copper internal...
  19. M

    URGENT 22mm copper pipe of 28mm copper pipe, what shall I run?

    Hi all. I'm new to this forum. Please go easy on me👷🏼 I'm currently renovating my house and my house currently runs from old lead pipes then soldered in to 15mm copper pipe. I want to replace the whole piping in the house from to bottom. My question is shall I run 22mm copper pipe then...
  20. T

    Reoccurring copper pipe pinhole leaks

    Hello folks, I am hoping some of you may be able to provide you perspective on what is looks like could be a serious problem. I am a complete novice so please bear with me... Full house renovation with all new pipe work, unvented megaflo cylinder, secondary return, pump, water softer etc. 1...
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