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instrument grades of beryllium
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Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001086
EISBN: 978-1-62708-162-7
... classification beryllium grades mining powder consolidation methods powder production refining BERYLLIUM is a metal with an unusual combination of physical and mechanical properties that make it particularly effective in optical components, precision instruments, and specialized aerospace applications...
Abstract
Beryllium is a metal with an unusual combination of physical and mechanical properties that make it particularly effective in optical components, precision instruments, and specialized aerospace applications. Almost all of the beryllium in use is a powder metallurgy (P/M) product. Beginning with an overview of the mining and refining processes of beryllium, this article discusses powder production and consolidation methods, beryllium grades and their designations, and the protective measures that have been enacted to reduce exposure to beryllium.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005142
EISBN: 978-1-62708-186-3
... pulverizing a vacuum-cast ingot. The hot pressed block can be warm rolled to the desired sheet thickness. Unalloyed beryllium is available in two grades, I (instrument grade) and S (structural grade). Typical applications for instrument-grade beryllium include gyroscopes, components in inertial guidance...
Abstract
This article describes the effect of temperature, composition, strain rate, and fabrication history on the results obtained in the forming of beryllium as well as the safety measures required. It provides information on the equipment, tooling, dies, and workpieces used for forming beryllium. The article discusses the role of lubrication, blank development, tool designs, and strain rates, in deep drawing. It also provides information on the tooling and applications of three-roll bending, stretch forming, and spinning.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003165
EISBN: 978-1-62708-199-3
... conductivity. The article describes structural, instrument, and optical grade beryllium and the corresponding compositional ranges. It also discusses processing and product forms as well as factors affecting corrosion resistance. The article concludes with a short note on health and safety considerations when...
Abstract
Beryllium possesses an unusual combination of physical and mechanical properties, suiting it for specialized applications where its relatively high cost can be justified. It has very low density, a moderately high melting point, high elastic modulus, and good electrical and thermal conductivity. The article describes structural, instrument, and optical grade beryllium and the corresponding compositional ranges. It also discusses processing and product forms as well as factors affecting corrosion resistance. The article concludes with a short note on health and safety considerations when handling beryllium.
Book: Powder Metallurgy
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006058
EISBN: 978-1-62708-175-7
..., made of inert-gas-atomized powder. Both materials can be used in the as-polished condition, or they can be coated before polishing. Instrument-Grade Beryllium I-220-H has a higher BeO content ( Table 1 ) compared with beryllium structural grades. This composition helps ensure a consistently high...
Abstract
This article briefly describes the production of beryllium powder and beryllium/beryllium oxide metal-matrix powder. It discusses fully dense consolidation methods: vacuum hot pressing, hot isostatic pressing, and cold isostatic pressing. Secondary fabrication operations of beryllium and aluminum-beryllium alloys such as extrusion, rolling, welding, joining, and machining are discussed. The article discusses quality control and provides information on the structural, optical, and high-purity grades of beryllium.
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003770
EISBN: 978-1-62708-177-1
.... Other advantages are produced in gold, zinc, and other base metals. Unalloyed beryllium is used in weapons, spacecraft, nuclear reactor reflector segments, neutron sources, windows for x-ray tubes and radiation detection devices, rocket nozzles, aircraft brake discs, precision instruments, and mirrors...
Abstract
The two major types of beryllium-containing alloys are copper-berylliums and nickel-berylliums. The most widely used beryllium-containing alloys are wrought copper-berylliums, which provide good strength while retaining useful levels of electrical and thermal conductivity. This article provides information on the specimen preparation procedures, macroexamination, microexamination, and microstructures of beryllium, copper-beryllium alloys, as well as nickel-beryllium alloys. It also discusses health and safety measures associated with the specimen preparation of beryllium and beryllium-containing alloys.
Book: Corrosion: Materials
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003827
EISBN: 978-1-62708-183-2
... of beryllium S, structural grade; I, instrument grade; O, optical grade Chemical composition (by weight) S-200F S-65C I-220C O-30 Be, % (min) 98.5 (99.2) 99.0 (99.4) 98.0 (98.5) 99.0 (99.4) BeO, % (max) 1.5 (1.0) 1.0 (0.65) 2.2 (1.85) 0.5 (0.35) Al, ppm (max) 1000 (500) 600 (320...
Abstract
This article describes the four major conditions that can cause beryllium to corrode in air. These include beryllium carbide particles exposed at the surface; surface contaminated with halide, sulfate, or nitrate ions; surface contaminated with other electrolyte fluids; and atmosphere that contains halide, sulfate, or nitrate ions. The article provides information on the behavior of beryllium under the combined effects of high-purity water environment, stress and chemical environment, and high-temperature environment. The compositions of the structural grades for intentionally controlled elements and major impurities are tabulated. The article discusses the in-process problems and procedures that are common but avoidable when processing beryllium and aluminum-beryllium composites. It also describes the types of coatings used on beryllium and aluminum-beryllium. These include chemical conversion coatings, anodized coatings, plated coatings, organic coatings, and plasma-sprayed coatings.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001456
EISBN: 978-1-62708-173-3
... oxide content. It is partially through the control of this oxide that the final properties of the beryllium are achieved. Them are structural, optical, and instrument grades of beryllium to permit design optimization. Other forms of beryllium sheet, plate, or extrusions are fabricated from the block...
Abstract
This article provides a discussion on filler metal selection, brazing procedures, and brazing equipment for brazing refractory metals. These include molybdenum, tungsten, niobium, and tantalum, and reactive metals. Commercially pure and alpha titanium alloys, alpha-beta alloys, zirconium alloys, and beryllium alloys are some reactive metals discussed in the article.
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001731
EISBN: 978-1-62708-178-8
... the quantitative analysis of elements in metals and metal-bearing ores. The instrumentation required for such applications consists of a light source, a filter or wavelength selector, and some type of visual or automated sensing mechanism. The article examines common sensing options and provides helpful...
Abstract
Ultraviolet/visible (UV/VIS) absorption spectroscopy is a powerful yet cost-effective tool that is widely used to identify organic compounds and to measure the concentration of principal and trace constituents in liquid, gas, and solid test samples. This article emphasizes the quantitative analysis of elements in metals and metal-bearing ores. The instrumentation required for such applications consists of a light source, a filter or wavelength selector, and some type of visual or automated sensing mechanism. The article examines common sensing options and provides helpful information on how to set up and run a variety of UV/VIS absorption tests.
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001071
EISBN: 978-1-62708-162-7
... Abstract Addition of beryllium, up to about 2 wt″, produces dramatic effects in copper, nickel, aluminum, magnesium, gold, zinc, and other base metal alloys. This article provides information on the chemical composition, microstructure, heat treatment, fabrication characteristics, production...
Abstract
Addition of beryllium, up to about 2 wt″, produces dramatic effects in copper, nickel, aluminum, magnesium, gold, zinc, and other base metal alloys. This article provides information on the chemical composition, microstructure, heat treatment, fabrication characteristics, production steps and physical metallurgy of beryllium-copper, beryllium-nickel, and beryllium-aluminum alloy, and tabulates their mechanical, electrical and physical properties, and temper designations. It describes the important features of this alloy group, including information on safe handling. Additionally, the article presents examples of the beneficial properties of beryllium-copper alloys and quantifies some of the major reasons for their selection for particular applications.
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003480
EISBN: 978-1-62708-195-5
... 7.0 282 41 10.0 Beryllium Aluminum 210 13.9 179 26 2.1 E-glass fibers Epoxy 0.16–0.26 11–16 16–19 2–3 2.1 Invar Silver 153 6.5 110 16 8.8 Continuous carbon fibers Epoxy 300 −1.1 186 27 1.8 Copper 400 6.5 158 23 7.2 Aluminum 290 6.5 131 19 2.5...
Abstract
This article presents an overview of advanced composites, namely, polymer matrix composites, metal-matrix composites, ceramic-matrix composites, and carbon-matrix composites. It also provides information on the properties and applications of the composites in thermal management and electronic packaging.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005884
EISBN: 978-1-62708-167-2
... body. Medical instruments and some biomaterial implants are made from stainless steel. Stainless steel does not readily degrade inside the human body—a desirable trait for plates and screws used to help bones heal. Martensitic stainless steels, such as grade 410, is used in a range of fasteners, pumps...
Abstract
The warm and hot working of metals provide the ability to shape important materials into component shapes that are useful in a variety of applications requiring strength, toughness, and ductility. This article focuses on a variety of metals that can be hot or warm worked, and describes the characteristics and processing considerations of each metal. It discusses forging because it is a versatile metalworking process and performed at cold, warm, and hot working temperatures. The article also presents the applications of steels, stainless steels, aluminum alloys, titanium alloys, superalloys, and copper alloys.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003211
EISBN: 978-1-62708-199-3
... Table 1 ASTM B 32 specification for tin-lead, Sn-Pb-Sb, Sn-Pb-Ag, and lead-silver solders Alloy grade Composition (a) , % Melting range (b) Solidus Liquidus Sn Pb Sb Ag Cu Cd Al Bi As Fe Zn °C °F °C °F Sn70 69.5–71.5 bal 0.50 0.015 0.08 0.001 0.005 0.25 0.03...
Abstract
Soldering involves heating a joint to a suitable temperature and using a filler metal (solder) that melts below 450 deg C (840 deg F). Beginning with an overview of the specification and standards and applications, this article discusses the principal levels and effects of the most common impurity elements in tin-lead solders. It describes the various processes involved in the successful soldering of joints, including shaping the parts to fit closely together; cleaning and preparing the surfaces to be joined; applying a flux; assembling the parts; and applying the heat and solder.
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002462
EISBN: 978-1-62708-194-8
... Abstract This article focuses on the monolithic form of nonferrous alloys, including aluminum, copper, nickel, cobalt, titanium, zinc, magnesium, and beryllium alloys. Each metal and alloy offers unique combinations of useful physical, chemical, and structural properties that are made available...
Abstract
This article focuses on the monolithic form of nonferrous alloys, including aluminum, copper, nickel, cobalt, titanium, zinc, magnesium, and beryllium alloys. Each metal and alloy offers unique combinations of useful physical, chemical, and structural properties that are made available by its particular composition and the proper choice of processing method. The article describes the composition, designation system, properties, and processing method of these metals and alloys. It discusses the effect of alloying elements in these alloys. The article explains microstructure/property relationships that are used to make specific properties available to the designers of structural applications. It provides examples of phase diagrams that illustrate eutectic and peritectic reactions.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005332
EISBN: 978-1-62708-187-0
..., nickel, beryllium, chromium, and iron. The article discusses minor alloying additions, including antimony, bismuth, selenium, manganese, and phosphorus. Copper alloys can be cast by many processes, including sand casting, permanent mold casting, precision casting, high-pressure die casting, and low...
Abstract
The properties of copper alloys occur in unique combinations found in no other alloy system. This article focuses on the major and minor alloying additions and their impact on the properties of copper. It describes major alloying additions, such as zinc, tin, lead, aluminum, silicon, nickel, beryllium, chromium, and iron. The article discusses minor alloying additions, including antimony, bismuth, selenium, manganese, and phosphorus. Copper alloys can be cast by many processes, including sand casting, permanent mold casting, precision casting, high-pressure die casting, and low-pressure die casting. The article provides information on the types of copper castings and tabulates the nominal chemical composition and mechanical properties of several cast alloys.
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001732
EISBN: 978-1-62708-178-8
... describes the instruments used in the spectroscopy, namely, radiation sources, sample holders, wavelength selectors, detectors, computers, and ratiometric instruments. The practical considerations include solvent effects, corrected spectra, wavelength calibration, temperature, and scattered light...
Abstract
This article provides an introduction to the molecular fluorescence spectroscopy, and discusses the theory of fluorescence and its application to chemical analysis. It provides information on fluorescence that occurs in organic compounds and inorganic atoms and molecules. The article describes the instruments used in the spectroscopy, namely, radiation sources, sample holders, wavelength selectors, detectors, computers, and ratiometric instruments. The practical considerations include solvent effects, corrected spectra, wavelength calibration, temperature, and scattered light. The article also discusses the uses of some special techniques used in molecular fluorescence spectroscopy.
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003754
EISBN: 978-1-62708-177-1
... oblique illumination optical components phase contrast illumination photomicrography polarized light microscopy resolution THE LIGHT OPTICAL MICROSCOPE remains the most important tool for the study of microstructure, despite the evolution of sophisticated electron metallographic instruments...
Abstract
This article provides information on the basic components of a light microscope, including the illumination system, collector lens, and optical and mechanical components. It describes optical performance in terms of image aberrations, resolution, and depth of field. The article discusses the examination of specimen surfaces using polarized light, phase contrast, oblique illumination, dark-field illumination, bright-field illumination, interference-contrast illumination, and phase contrast illumination. Special techniques and devices that may be used with the optical microscope, to obtain additional information, are also described. The article concludes with information on photomicroscopy and macrophotography.
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003005
EISBN: 978-1-62708-200-6
... in instrumentation, process equipment, and data manipulation, which allow high-speed, economical production. This article classifies various engineered materials and reviews their general property characteristics and applications. The synergy between the elements of the materials selection process is briefly...
Abstract
The selection of engineered materials is an integrated process that requires an understanding of the interaction between materials properties, manufacturing characteristics, design considerations, and the total life cycle of the product. This article classifies various engineered materials, including ferrous alloys, nonferrous alloys, ceramics, cermets and cemented carbides, engineering plastics, polymer-matrix composites, metal-matrix composites, ceramic-matrix and carbon-carbon composites, and reviews their general property characteristics and applications. It describes the synergy between the elements of the materials selection process and presents a general comparison of material properties. Finally, the article provides a short note on computer aided materials selection systems, which help in proper archiving of materials selection decisions for future reference.
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001069
EISBN: 978-1-62708-162-7
... Abstract This article is a compilation of property data for standard grades of cast copper alloys. Data are provided for mechanical, physical, thermal, electrical, chemical, nuclear, optical, and magnetic properties. The list for each alloy includes its common name, chemical composition...
Abstract
This article is a compilation of property data for standard grades of cast copper alloys. Data are provided for mechanical, physical, thermal, electrical, chemical, nuclear, optical, and magnetic properties. The list for each alloy includes its common name, chemical composition, applications, mass characteristics, and fabrication characteristics.
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002161
EISBN: 978-1-62708-188-7
... removal rate at 1000 A g/cm 3 lb/in. 3 cm 3 /min in. 3 /min Aluminum 3 2.67 0.098 2.06 0.126 Beryllium 2 1.85 0.067 1.50 0.092 Chromium 2 7.19 0.260 2.25 0.137 3 7.19 0.260 1.51 0.092 6 7.19 0.260 0.75 0.046 Cobalt 2 8.85 0.322 2.05 0.125 3 8.85...
Abstract
This article describes the various characteristics of electrochemical grinding (ECG). It discusses grinding methods that can be performed with ECG components, namely, the electrolyte delivery and circulating system, the electrolyte, the DC power supply, grinding wheel, and the workpiece. Grinding, surface grinding, internal grinding, form grinding, and cylindrical grinding are discussed. The article also lists the advantages, disadvantages, and applications of ECG.
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001098
EISBN: 978-1-62708-162-7
... discusses thermocouple circuits and instrumentation, calibration methods, insulation requirements, operating ranges, measurement errors, and maintenance procedures. It also provides property data and emf curves for common metals and thermocouple types, and contains information on color coding used around...
Abstract
This article provides an in-depth review of thermocouples and the metals from which they are made. It explains how dissimilar metal conductors in contact at opposite ends can generate an electromotive force if the junctions are heated or cooled to different temperatures. The article discusses thermocouple circuits and instrumentation, calibration methods, insulation requirements, operating ranges, measurement errors, and maintenance procedures. It also provides property data and emf curves for common metals and thermocouple types, and contains information on color coding used around the world.
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