Brass tube is a tube made of non-ferrous metal brass. Brass Pipe - brass representation According to China's "non-ferrous metals and alloys product grade representation method", brass using the code (hanyu pinyin letter) "H" representation. Ordinary brass with "H" plus the basic elements of copper content, such as: 68 copper expressed as h68, 65 copper expressed as H65, H62, the same reason.
Brass pipe with strong, corrosion-resistant properties, and become the modern contractor in all residential commercial housing water piping, heating, cooling piping installation of choice. Brass pipe is the best water supply pipe.
Brass Pipe Characteristics:
Lighter weight, good thermal conductivity, high strength at low temperature. Commonly used in the manufacture of heat exchange equipment (such as condensers, etc.). It is also used for assembling low-temperature piping in oxygen equipment. Small diameter copper tube is commonly used in the transportation of pressurized liquids (such as lubrication system, oil pressure system, etc.) and used as a pressure measuring tube of the instrument.
Brass tube advantages:
1, copper is economic. Because copper pipe is easy to process and connect, make it in the installation, can save material and total cost, has good stability as well as reliability, can save maintenance.
2, copper is lightweight. For the same inner diameter of the stranded threaded pipe, brass pipe does not need the thickness of ferrous metal. When installed, copper pipe transportation costs are smaller, maintenance is easier and takes up less space.
3. Copper can change its shape. Because copper pipe can be bent and deformed, copper pipe it can often be made into elbows and joints, smooth bending allows copper pipe to bend at any angle.
4,Copper is easy to connect.
5, copper is safe. No leakage, no flammability, no toxic gases, corrosion resistance. Copper pipe is hard, not easy to corrode, and resistant to high temperature and high pressure, can be used in a variety of environments.
Mechanical properties of brass tube:
Brand No. State Tensile test Hardness test
Tensile strength Rm / MPa Elongation A / % Vickers hardness a / HV Brinell hardness b / HB
Not less than Not less than
H68 M 280 43 55~85 50~80
M2 350 40 85~120 80~115
Y2 370 25 95~125 90~120
Y 420 - ≥115 ≥110
H65 M 290 43 55~85 50~80
M2 360 25 80~115 75~110
Y2 370 18 90~120 85~115
Y 430 - ≥110 ≥105
H63 M 300 43 60~90 55~85
H62
m2 360 25 75~110 70~105
y2 370 18 85~120 80~115
Y 440 - ≥115 ≥110
Chemical composition of brass tube:
Brand Chemical composition (%)
Name Designation Cu Fe Pb Al Mn Sn Ni Zn Total Impurities
68 brass (tube) H68 67.0~70.0 0.10 0.03 - - - - 0.5 Balance 0.3
65 brass (tube) H65 63.5~68.0 0.10 0.03 - - - - 0.5 balance 0.3
63 brass (tube) H63 62.0~65.0 0.15 0.08 - - - - 0.5 balance 0.5
62 brass (tube) H62 60.5~63.5 0.15 0.08 - - - - 0.5 balance 0.5
Mechanical properties and use of brass in brass tube analysis
Brass is an alloy composed of copper and zinc. If only composed of copper and zinc brass is called ordinary brass. If it is composed of more than two elements of a variety of alloys is called special brass. Such as lead, tin, manganese, nickel, lead, iron, silicon copper alloy. Brass has strong wear resistance. Special brass is also called special brass, which has high strength, hardness and chemical resistance. There are also cutting mechanical properties are more prominent. The seamless copper tube drawn from brass is soft and has strong wear resistance. Seamless brass tubes can be used for heat exchangers and condensers, cryogenic piping, and undersea transportation tubes. Manufacture of sheet, strip, bar, pipe, casting parts and so on. Containing copper in 62% to 68%, strong plasticity, manufacturing pressure-resistant equipment, etc..
According to the different kinds of alloying elements contained in brass, brass is divided into ordinary brass and special brass. Brass for pressure processing is called deformed brass.
Brass is a copper alloy with zinc as the main additive element and has a beautiful yellow color, collectively known as brass. Copper-zinc binary alloys are called ordinary brass or simple brass. Brasses with more than three elements are called special brasses or complex brasses. Brass alloys containing less than 36% zinc are composed of solid solutions with good cold working properties, such as brass containing 30% zinc is commonly used to make cartridge cases, commonly known as cartridge brass or seven-three brass. Brass alloys containing 36 to 42% zinc are composed of and solid solution, the most commonly used is the 40% zinc-containing six-four brass. In order to improve the performance of ordinary brass, often add other elements, such as aluminum, nickel, manganese, tin, silicon, lead and so on. Aluminum can improve the strength, hardness and corrosion resistance of brass, but the plasticity is reduced, suitable for the sea vessel condenser tube and other corrosion-resistant parts. Tin can improve the strength of brass and corrosion resistance to seawater, so called naval brass, used as ship thermal equipment and propellers. Lead can improve the cutting performance of brass; this kind of free-cutting brass is often used for clock and watch parts. Brass castings are often used to make valves and pipe fittings.
