Beryllium Copper Series

Beryllium copper (BeCu), also known as copper beryllium (CuBe), beryllium bronze and spring copper, is a copper alloy with 0.5–3% beryllium and sometimes other elements. Beryllium copper combines high strength with non-magnetic and non-sparking qualities. It has excellent metalworking, forming and machining properties. It has many specialized applications in tools for hazardous environments, musical instruments, precision measurement devices, bullets, and aerospace. Beryllium alloys present a toxic inhalation hazard during manufacture.

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Grade list of copper and copper alloys by country
ClassificationChinaGermanyAmericaJapanEnglandEuropeInternational
oxygen free copperTU12.0076C10200C1020RC103
TU2Cu-OF-H110C11000c1011C101
Vacuum oxygen free copperE-Cu58TU00c10206N
high puritycopper-OFEc10500c10700
Silver copperTAg 0.1CuAg 0.1C10400C1040CuAg 0.1
brassH90CuZn10C22000C2200CZ101CuZn10CW501L
H70CuZn30C26000C2600CZ106CuZn30CW505L
H68C26200C2620CuZn33CW506L
H65CuZn35C27000C2700CZ107CuZn36CW507L
H63CuZn37C27200C2720CZ108CuZn37CW508L
H62CuZn40C28000C2800CZ109CW509L
bronzeQSn4-0.3CuSn4C51100C5111PB101CuSn4CW450K
CuSn5C51000C5101CuSn5CW451K
QSn6.5-0.1CuSn6C51900C5191PB103CuSn6CW452K
QSn8-0.3CuSn8C52100C5210CuSn8CW453K
QSn6.5-0.4
copper-nickelBZn18-18CuNi18Zn20C75200C7521NS106CuNi18Zn20
BZn18-26CuNi18Zn27C77000C7701NS107CuNi18Zn27CW410J
BZn15-20C7541CW409J
BZn18-10C7350
pure copperTU2OF-Cu58C10100C1011C101CW008Acopper oxide
T2SW——copperC11000C1100C101copper - FRHC
TP2SF-CuC12200C1220C106CW024Acopper - DHP
TP1SW-copperC12000C1201CW023Acopper DLP

Beryllium copper is a ductile, weldable, and machinable alloy. Like pure copper, it is resistant to non-oxidizing acids like hydrochloric acid and carbonic acid, to plastic decomposition products, to abrasive wear, and to galling. It can be heat-treated for increased strength, durability, and electrical conductivity. Beryllium copper attains the greatest strength (to 1,400 MPa (200,000 psi)) of any copper-based alloy.[1] It has good thermal conductivity (62 Btu/ft-deg.F-H) 3-5 times more than Tool steel. It has a solid melting point of 1590 degrees Fahrenheit and 1800 degrees Fahrenheit liquid melting point. It has an excellent capacity for being hot formed. C17200 Copper has the strength and hardness similar to that of steel and Rockwell hardness properties in its peaked age condition are in the range of 200 ksi and RC45. C17200 has excellent corrosion resistant properties when exposed to harsh conditions such as sea water, and down-hole environments. It will withstand sulfide or chloride stress corrosion cracking, and will resist the effects of carbon dioxide and hydrogen embrittlement. Copper alloys in general have always been considered non-sparking. C17200 has the strength to withstand the use of a hand and mechanical tools. These non-sparking features are best applied in explosive environments such as in the Oil & Gas and gun powder industries.

Beryllium copper is a non-ferrous alloy used in springs, spring wire, load cells, and other parts that must retain their shape under repeated stress and strain. It has high electrical conductivity, and is used in low-current contacts for batteries and electrical connectors.

Beryllium copper is non-sparking but physically tough and nonmagnetic, fulfilling the requirements of ATEX directive for Zones 0, 1, and 2. Beryllium copper screwdrivers, pliers, wrenches, cold chisels, knives, and hammers are available for environments with explosive hazards, such as oil rigs, coal mines, and grain elevators. An alternative metal sometimes used for non-sparking tools is aluminium bronze. Compared to steel tools, beryllium copper tools are more expensive and not as strong, but the properties of beryllium copper in hazardous environments may outweigh the disadvantages.

Some other uses include:

1.  Some percussion instruments for its consistent tone and resonance, especially tambourines and triangles.

2.  Ultra-low temperature cryogenic equipment, such as dilution refrigerators, because of its mechanical strength and relatively high thermal conductivity in this temperature range.

3.  Moulds for manufacturing plastic containers (including virtually every plastic milk jug), with the blow molding process.

4.  Armour piercing bullets,[3] though such usage is unusual because bullets made from steel alloys are much less expensive and have similar properties.

5.  Measurement-while-drilling (MWD) tools in the directional drilling industry. A non-magnetic alloy is required, as magnetometers are used for field-strength data received from the tool. Also for its high strength combined with anti-galling properties.

6.  Servicing magnetic resonance imaging (mri) machines, where high strength magnetic fields make the use of ferrous tools dangerous, and where magnetic materials in the field can disturb the image.

7.  Gaskets used to create an RF-tight (resistant to radio frequency leakage), electronic seal on doors used with EMC testing and anechoic chambers.

8.  For a time, beryllium copper was used in the manufacture of golf clubs, particularly wedges and putters. Though some golfers prefer the feel of BeCu club heads, regulatory issues and high costs have made BeCu clubs difficult to find in current production.

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Tel: 0086-021-57629806

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