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Beryllium and copper
Beryllium increases hardness and resistance to corrosion when alloyed to aluminium, cobalt, copper ( notably beryllium copper ), iron and nickel.
Beryllium copper ( BeCu ), also known as copper beryllium, beryllium bronze and spring copper, is a copper alloy with 0. 5 — 3 % beryllium and sometimes with other alloying elements.
Beryllium copper combines high strength with non-magnetic and non-sparking qualities.
Beryllium copper is a ductile, weldable, and machinable alloy.
Beryllium copper attains the highest strength ( to ) of any copper-based alloy.
Beryllium copper is a non-ferrous alloy used in springs, spring wire, load cells and other parts that must retain their shapes during periods in which they are subjected to repeated stress and strain.
Beryllium copper fulfills the demands of ATEX directive for use in Zone 0, 1, and 2.
Beryllium copper is frequently used in the manufacture of professional-quality percussion instruments, especially tambourine and triangle, where it is prized for its clear tone and strong resonance.
Beryllium copper has found use in ultra-low temperature cryogenic equipment, such as dilution refrigerators, because of its combination of mechanical strength and relatively high thermal conductivity in this temperature range.
Beryllium copper is used for measurement-while-drilling tools in the directional ( slant drilling ) drilling industry.
Beryllium copper gaskets are used to create an RF-tight ( resistant to radio frequency leakage ), electronic seal on doors used with EMC testing and anechoic chambers.
Beryllium copper wire is produced in many forms: round, square, flat and shaped, in coils, on spools and in straight lengths.
Beryllium copper wire is resistant to non-oxidizing acids ( for example, hydrochloric acid, or carbonic acid ), to plastic decomposition products, to abrasive wear and to galling.
Beryllium copper valve seats, and valve guides are used in high performance four-stroke engines using coated titanium valves.
* Standards and properties-Copper and copper alloy microstructures-Copper Beryllium
Beryllium copper is used in areas of the mold that require fast heat removal or areas that see the most shear heat generated.
The true Halligan is a forged tool, of one piece construction, available in a number of lengths ( typically 18 to 54 inches ( 45. 7 to 137 cm )), and of various materials, including titanium, Beryllium copper or stainless steel.
The combination of good physical properties, fair electrical conductivity and moderate cost make Phosphor Bronze round, square, flat and special shaped wire desirable for many springs and electrical contacts and a wide variety of wire forms where cost of properties does not prescribe Beryllium copper.

Beryllium and has
Beryllium is a steel gray and hard metal that is brittle at room temperature and has a close-packed hexagonal crystal structure.
Beryllium has a large scattering cross section for high-energy neutrons, about 6 barns for energies above ~ 0. 01 MeV.
Beryllium has also been used in some experimental types, and hydrocarbons have been suggested as another possibility.
Beryllium has also been used in some experimental types, and hydrocarbons have been suggested as another possibility.
To date, most research has focused on FLiBe, because Lithium and Beryllium are reasonably effective moderators, and form a eutectic salt mixture with a lower melting point than each of the constituent salts.

Beryllium and used
The first ceramic metal material developed used magnesium oxide ( MgO ), Beryllium oxide ( BeO ), and aluminum oxide ( Al < sub > 2 </ sub > O < sub > 3 </ sub >) for the ceramic part.
This operation was named Chagai-I and all of these nuclear devices used HEU, evidently made from KRL, and had Beryllium reflectors.

Beryllium and for
* National Institute for Occupational Safety and Health – Beryllium Page

Beryllium and any
Beryllium and boron are not significantly produced in stellar fusion processes, because the instability of any < sup > 8 </ sup > Be formed from two < sup > 4 </ sup > He nuclei prevents simple 2-particle reaction building-up of these elements.

Beryllium and is
Beryllium ( ) is the chemical element with the symbol Be and atomic number 4.
Beryllium is corrosive to tissue, and can cause a chronic life-threatening allergic disease called berylliosis in some people.
Beryllium is a toxic metal that can cause immune sensitization, chronic beryllium disease, and cancer, with effects occurring in some people at very low levels of exposure.
* Beryllium is discovered by Johann Bartholomäus Trommsdorff in beryl from Saxony, a new earth ; he calls it Agusterde (" Agust Earth ").
Beryllium, due to its low Z number is highly transparent to X-rays.
Beryllium is unique as being the only monoisotopic element with both an even number of protons and an odd number of neutrons.

Beryllium and from
Lithium and Beryllium, the first elements in group 1 and group 2 respectively, show some properties which are different from other members of their respective groups.
In the United States the Beryllium Case Registry contained 900 records, early cases relating to extraction and fluorescent lamp manufacture, later ones coming from the aerospace, ceramics and metallurgical industries.

Beryllium and are
Beryllium compounds are known human carcinogens when inhaled.

Beryllium and have
Beryllium and aluminium can also have incomplete octets.

Beryllium and .
Beryllium also releases neutrons under bombardment by gamma rays.
* Walsh, KA, Beryllium Chemistry and Processing.
* ATSDR Case Studies in Environmental Medicine: Beryllium Toxicity U. S. Department of Health and Human Services
It was dated using Beryllium based Radiometric dating as living circa.

0.176 seconds.