DOCSLIB.ORG

40 CFR Ch. I (7–1–14 Edition) Pt. 300, App. B

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
40 CFR Ch. I (7–1–14 Edition) Pt. 300, App. B Pt. 300, App. B 40 CFR Ch. I (7–1–14 Edition) gamma-emitting radionuclides in surface and nonradioactive hazardous substances materials. separately. Compare the concentration of Select the benchmark(s) applicable to the each radionuclide and each nonradioactive pathway (or threat) being evaluated. Com- hazardous substance from the sampling loca- pare the concentration of each radionuclide tion to its respective benchmark concentra- from the sampling location to its benchmark tion(s). Use only those samples and only concentration(s) for that pathway (or those substances in the sample that meet the threat). Use only those samples and only criteria for an observed release (or observed those radionuclides in the sample that meet contamination) for the pathway except: tis- the criteria for an observed release (or ob- sue samples from aquatic human food chain served contamination) for the pathway, ex- organisms may be used as specified in sec- cept: tissue samples from aquatic human tions 4.1.3.3 and 4.2.3.3. If the concentration food chain organisms may be used as speci- of one or more applicable radionuclides or fied in sections 4.1.3.3 and 4.2.3.3. If the con- other hazardous substances from any sample centration of any applicable radionuclide equals or exceeds its benchmark concentra- from any sample equals or exceeds its bench- tion, consider the sampling location to be mark concentration, consider the sampling subject to Level I concentrations. If more location to be subject to Level I concentra- than one benchmark applies to a radio- tions for that pathway (or threat). If more nuclide or other hazardous substance, assign than one benchmark applies to the radio- Level I if the concentration of the radio- nuclide, assign Level I if the radionuclide nuclide or other hazardous substance equals concentration equals or exceeds the lowest or exceeds its lowest applicable benchmark applicable benchmark concentration. In ad- concentration. dition, for the soil exposure pathway, assign If no radionuclide or other hazardous sub- Level I concentrations at the sampling loca- stance individually exceed a benchmark con- tion if measured gamma radiation exposure centration, but more than one radionuclide rates equal or exceed 2 times the background or other hazardous substance either meets level (see section 7.1.1). the criteria for an observed release (or ob- If no radionuclide individually equals or served contamination) for the sample or is exceeds its benchmark concentration, but eligible to be evaluated for a tissue sample, more than one radionuclide either meets the calculate an index I for both types of sub- criteria for an observed release (or observed stances as specified in section 2.5.2. Sum the contamination) for the sample or is eligible index I values for the two types of sub- to be evaluated for a tissue sample (see sec- stances. If the value, individually or com- tions 4.1.3.3 and 4.2.3.3), calculate a value for bined, equals or exceeds 1, assign Level I to index I for these radionuclides as specified in the sample location. If it is less than 1, cal- section 2.5.2. If I equals or exceeds 1, assign culate an index J for the nonradioactive haz- Level I to the sampling location. If I is less ardous substances as specified in section than 1, assign Level II. 2.5.2. If J equals or exceeds 1, assign Level I At sites containing mixed radioactive and to the sampling location. If J is less than 1, other hazardous substances, establish the assign Level II. level of contamination for each sampling lo- cation considering radioactive substances [55 FR 51583, Dec. 14, 1990] APPENDIX B TO PART 300—NATIONAL PRIORITIES LIST TABLE 1—GENERAL SUPERFUND SECTION State Site name City/County Notes(a) AK ........................ Salt Chuck Mine .................................................................... Outer Ketchikan County. AL ........................ Alabama Plating Company, Inc. ............................................ Vincent. AL ........................ American Brass ..................................................................... Headland. AL ........................ Ciba-Geigy Corp. (McIntosh Plant) ....................................... McIntosh. AL ........................ Interstate Lead Co. (ILCO) .................................................... Leeds. AL ........................ Olin Corp. (McIntosh Plant) ................................................... McIntosh. AL ........................ Perdido Ground Water Contamination .................................. Perdido. AL ........................ Redwing Carriers, Inc. (Saraland) ......................................... Saraland. AL ........................ Stauffer Chemical Co. (Cold Creek Plant) ............................ Bucks. AL ........................ Stauffer Chemical Co. (LeMoyne Plant) ................................ Axis. AL ........................ T.H. Agriculture & Nutrition (Montgomery) ............................ Montgomery. AL ........................ Triana/Tennessee River ........................................................ Limestone/Morgan. AR ....................... Arkwood, Inc .......................................................................... Omaha. AR ....................... Cedar Chemical Corporation ................................................. West Helena .......................... S AR ....................... MacMillan Ring Free Oil ........................................................ Norphlet. AR ....................... Mid-South Wood Products ..................................................... Mena. AR ....................... Midland Products ................................................................... Ola/Birta. AR ....................... Monroe Auto Equipment (Paragould Pit) .............................. Paragould. 206 VerDate Mar<15>2010 13:39 Aug 21, 2014 Jkt 232176 PO 00000 Frm 00216 Fmt 8010 Sfmt 8002 Y:\SGML\232176.XXX 232176 pmangrum on DSK3VPTVN1PROD with CFR Environmental Protection Agency Pt. 300, App. B TABLE 1—GENERAL SUPERFUND SECTION—Continued State Site name City/County Notes(a) AR ....................... Mountain Pine Pressure Treating, Inc ................................... Plainview. AR ....................... Ouachita Nevada Wood Treater ............................................ Reader.. AR ....................... Popile, Inc .............................................................................. El Dorado. AR ....................... Vertac, Inc. ............................................................................. Jacksonville. AZ ........................ Apache Powder Co. ............................................................... St. David. AZ ........................ Hassayampa Landfill ............................................................. Hassayampa. AZ ........................ Indian Bend Wash Area ........................................................ Scottsdale/Tempe/Phoenix .... P AZ ........................ Iron King Mine—Humboldt Smelter ....................................... Dewey-Humboldt. AZ ........................ Litchfield Airport Area ............................................................ Goodyear/Avondale. AZ ........................ Motorola, Inc. (52nd Street Plant) ......................................... Phoenix. AZ ........................ Tucson International Airport Area .......................................... Tucson. CA ....................... Advanced Micro Devices, Inc ................................................ Sunnyvale. CA ....................... Advanced Micro Devices, Inc. (Bldg. 915) ............................ Sunnyvale. CA ....................... Aerojet General Corp ............................................................. Rancho Cordova. CA ....................... Alark Hard Chrome ................................................................ Riverside. CA ....................... AMCO Chemical .................................................................... Oakland. CA ....................... Applied Materials ................................................................... Santa Clara. CA ....................... Atlas Asbestos Mine .............................................................. Fresno County. CA ....................... Beckman Instruments (Porterville Plant) ............................... Porterville. CA ....................... Blue Ledge Mine .................................................................... Rogue River—Siskiyou Na- tional Forest. CA ....................... Brown & Bryant, Inc (Arvin Plant) ......................................... Arvin. CA ....................... CTS Printex, Inc. ................................................................... Mountain View. CA ....................... Casmalia Resources .............................................................. Casmalia. CA ....................... Coast Wood Preserving ......................................................... Ukiah. CA ....................... Cooper Drum Company ......................................................... South Gate.. CA ....................... Crazy Horse Sanitary Landfill ................................................ Salinas. CA ....................... Del Amo ................................................................................. Los Angeles. CA ....................... Fairchild Semiconductor Corp. (Mt View) .............................. Mountain View. CA ....................... Fairchild Semiconductor Corp. (S San Jose)
Load more

Recommended publications
  • Investment Casting Or the Lost Wax Process
    Investment Casting or The Lost Wax Process Apecs Investment Castings was founded in 1963 and is now situated in the Melbourne suburb of Burwood where we have been since we outgrew our Canterbury factory in August 1987. The company name (APECS), stands for Anthony Philip Eccles Casting Service. Investment is a type of plaster that we use in our process of reproducing multiple copies of an original master pattern which is usually supplied to us by our customers. This is a classic 18ct yellow gold emerald and diamond ring taken from the Apecs catalogue. The next series of photos will show the steps involved in producing multiple copies of this ring. An original master pattern is designed and fabricated by our customers and supplied to us to reproduce in the quantities and metals of their choice. It is important to ensure that the master is made as accurately as possible and to pay particular attention to the finish of the master pattern. The better the quality of the master pattern the better the casting result. The finished master pattern ready for the caster. A picture of the master pattern is drawn and a mould number is allocated for identification. When the customer wants to reorder he quotes the mould number for the pattern he wants. A sprue is soldered onto the pattern. This sprue enables the pattern to be easily located in the mould and will provide the path for the wax to be injected into the rubber mould. To make a mould the master pattern is placed between sheets of uncured vulcanising rubber.
    [Show full text]
  • The Lost-Wax Casting Process—Down to Basics by Eddie Bell, Founder, Santa Fe Symposium
    The Lost-Wax Casting Process—Down To Basics By Eddie Bell, Founder, Santa Fe Symposium. Lost-wax casting is a ancient technique that is used today in essentially the same manner as it was first used more than 5,000 years ago. As they say, there's no messing with success. Today, of course, technology has vastly expanded the technique and produced powerful equipment that makes the process faster, easier and more productive than ever, but the basic steps remain the same. The steps below represent a simple overview and are intended to provide a beginning understanding of the casting process. Concept This is obviously where the design is initally conceived, discussed,evolved, and captured on paper—or on computer; CAD (computer aided design) software is increasingly popular among designers. You create the design you envision using the computer tool and the software creates a file that can be uploaded into a CNC mill or 3D printer. Model Build a model, either by hand-carving, guided by the paper rendering, or by uploading the CAD file into a computer controlled milling machine or a 3D printing machine. Models are made using carving wax, resin or similar material. This process can also be done in metal by a goldsmith or silversmith. Note: If a 3D printer or other rapid prototyping equipment is used, it is possible to skip the molding and wax-injection steps by using one of the resins that are specially made to go directly to the treeing process. Molding Create a mold from your master model, placing it in one of a variety of rubber or silicone materials, curing the material, then removing the model from the finished mold.
    [Show full text]
  • St Luke's Farnworth BELL CASTING
    St Luke’s Farnworth BELL CASTING by Geoffrey Poole In the earliest days they were cast in different sizes to produce different notes but no attempt was made to tune bells until the 16th Century with the advent of change ringing. In those times bells were roughly tuned – where the inside of the bell or the edge of the lip was chipped away with a hammer and chisel – eight bells could be tuned to an octave of eight notes. Some deprived communities used a hagiosideron, a shaped piece of metal which was struck in a similar way to a bell. Also again due to lack of money bellcotes were used instead of costly towers. A bell-cot, bell-cote or bellcote is a small framework and shelter for one or more bells. Bellcotes are most common in church architecture but are also seen on institutions such as schools. The bellcote may be carried on brackets projecting from a wall or built on the roof of chapels or churches that have no towers. The bellcote often holds the Sanctus bell that is rung at the consecration of the Eucharist. Bellcote is a compound noun of the words bell and cot or cote. Bell is self-explanatory. The word cot or cote is Old English, from the Germanic. It means a shelter of some kind, especially for birds or animals (see dovecote), a shed, or stall. Examples of bellcotes In order St Luke’s Farnworth Bell-cot at St Edmund's Church, Church Road, Wootton, Isle of Wight, England Church of England parish church of St Alban the Martyr, CharlesStreet, Oxford.
    [Show full text]
  • Influence of High-Temperature Treatment of Melt on the Composition and Structure of Aluminum Alloy
    ARCHIVES of ISSN (2299-2944) FOUNDRY ENGINEERING Volume 17 DOI: 10.1515/afe-2017-0131 Issue 4/2017 Published quarterly as the organ of the Foundry Commission of the Polish Academy of Sciences 61 – 66 Influence of High-Temperature Treatment of Melt on the Composition and Structure of Aluminum Alloy V.A. Grachev a, *, N.D. Turakhodjaev b a A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 29 Bldg 1, Bolshaya Ordynka St., Suite # 104, 119017 Moscow, Russia b Tashkent State Technical University, Faculty of Mechanical University 2,Tashkent 100095, Republic of Uzbekistan, * Corresponding author. E-mail address: [email protected] Received 12.04.2017; accepted in revised form 23.06.2017 Abstract The aim of the current study was to examine the structure of an alloy treated at various temperatures up to 2,000–2,100 °C. Among research techniques for studying alloy structure there were the electron and optical microstructure, X-ray structure, and spectral analysis, and for studying the developed furnace geometric parameters the authors employed mathematical modeling method. The research was performed using aluminum smelting gas-fired furnaces and electric arc furnaces. The objects of the study were aluminum alloys of the brand AK7p and AK6, as well as hydrogen and aluminum oxide in the melt. For determining the hydrogen content in the aluminum alloy, the vacuum extraction method was selected. Authors have established that treatment of molten aluminum alloy in contact with carbon melt at high temperatures of 2,000–2,100 °C has resulted in facilitating reduction of hydrogen and aluminum oxide content in the melt by 40- 43% and 50-58%, respectively, which is important because hydrogen and aluminum oxide adversely affect the structure and properties of the alloy.
    [Show full text]
  • Metal Casting Terms and Definitions
    Metal Casting Terms and Definitions Table of Contents A .................................................................................................................................................................... 2 B .................................................................................................................................................................... 2 C .................................................................................................................................................................... 2 D .................................................................................................................................................................... 4 E .................................................................................................................................................................... 5 F ..................................................................................................................................................................... 5 G .................................................................................................................................................................... 5 H .................................................................................................................................................................... 6 I ....................................................................................................................................................................
    [Show full text]
  • Etch Overview for Microsystems Learning Module
    EEttcchh OOvveerrvviieeww ffoorr MMiiccrroossyysstteemmss Learning Module Map Knowledge Probe Etch Overview Activities (3) Final Assessments Instructor Guide www.scme-nm.org What is a SCO? A SCO is a "shareable-content object" or, what we like to call, a "self-contained object". The term SCO comes from the Shareable Content Object Reference Model (SCORM), first conceived by the Department of Defense in 1999 as part of the Advanced Distributed Learning Initiative (Gonzales, 2005; Advanced Distributed Learning, 2008). A SCO covers no more than 3 objectives that pertain to one specific topic (e.g., Material Safety Data Sheets or MEMS Applications). A SCO can be used by itself or with other SCOs with common or complementary objectives. We have grouped SCOs that support common objectives into a Learning Module. Learning Module Organization Each Learning Module (LM) contains at least one of the following three types of SCOs: Primary Knowledge (PK) - Each LM contains at least one PK which contains the basic information supporting the objectives. Most PKs have a supporting PowerPoint presentation. Activity (AC) – Each LM can contain one or more activities that provide interactive or hands-on learning that supports the objectives. Assessment (KP, FA, AA) – Each LM contains one or more assessments that determines the student's existing knowledge (Knowledge Probe (KP) or pretest) or knowledge gained relative to a particular AC, the PK or both. (Activity Assessment (AA), Final Assessment (FA)). Each SCO contains an Instructor Guide (IG) and Participant Guide (PG). Each SCO is self-contained; therefore any one SCO in the Learning Module can be used without the other SCOs, depending upon the needs of the student and the instructor.
    [Show full text]
  • Introduction to Casting for 3D Printed Jewelry Patterns the Way Jewelers Work Is Changing, and Castable Photopolymer Resins Are Leading the Way
    Introduction to Casting for 3D Printed Jewelry Patterns The way jewelers work is changing, and castable photopolymer resins are leading the way. From independent designers concepting and prototyping in their studios, to casting houses increasing capacity and diversifying their offerings, digital fabrication techniques are increasingly key to growing a successful jewelry business. In this guide, learn how to cast fine jewelry pieces from patterns 3D printed on the Form 2. Request a Sample Part 3D Printed in Castable Wax Resin › Learn About Casting and Jewelry Production from Formlabs › July 2019 | formlabs.com What Is Direct Investment Casting? Direct investment casting, or lost wax casting, is a popular moldmaking technique that can be used to fabricate small and large parts in a wide variety of metals. Originating over 5,000 years ago, casting enables creators to work with a wide variety of materials and is one of the easiest ways to make metal parts. In investment casting, a hollow mold is created from a hand-sculpted or 3D printed master pattern. The master is immersed in a refractory casting material (or “investment”), which dries and hardens. The wax or 3D printed pattern is burned out, leaving a negative mold of the design. Metal is poured into this hollow cavity to create the final part. Wax patterns for intricate jewelry are complicated to produce by hand, and in a world driven by high demand and fast fashion, it can be difficult for hand-crafted pieces to keep pace. Advanced materials and affordable in-house 3D printers like the Form 2 are changing the way jewelry manufacturers and designers work, bringing industrial quality to the desktop and making it easier to produce and fit complicated geometries that once required hours of meticulous labor.
    [Show full text]
  • Emerging Technologies in Metal Working Fluids and Compatibility with Refrigeration Systems Richard Butler [email protected]
    Purdue University Purdue e-Pubs International Refrigeration and Air Conditioning School of Mechanical Engineering Conference 2016 Emerging Technologies in Metal Working Fluids and Compatibility with Refrigeration Systems Richard Butler [email protected] Mike Foster [email protected] Neil Turner CPI Fluid Engineering, [email protected] Follow this and additional works at: http://docs.lib.purdue.edu/iracc Butler, Richard; Foster, Mike; and Turner, Neil, "Emerging Technologies in Metal Working Fluids and Compatibility with Refrigeration Systems" (2016). International Refrigeration and Air Conditioning Conference. Paper 1617. http://docs.lib.purdue.edu/iracc/1617 This document has been made available through Purdue e-Pubs, a service of the Purdue University Libraries. Please contact [email protected] for additional information. Complete proceedings may be acquired in print and on CD-ROM directly from the Ray W. Herrick Laboratories at https://engineering.purdue.edu/ Herrick/Events/orderlit.html 2127, Page 1 Emerging Technologies in Metal Working Fluids and Compatibility with Refrigeration Systems International Refrigeration and Air Conditioning Conference at Purdue 2016 Richard Butler1*, Neil Turner2, Nicholas Bujouves3 1Chemtool, Inc., R&D Laboratory, Rockton, Illinois, U.S.A. ([email protected]) 2CPI Fluid Engineering, R&D Laboratory, Midland, Michigan, U.S.A. ([email protected]) 3CPI Fluid Engineering, R&D Laboratory, Midland, Michigan, U.S.A. ([email protected]) * Corresponding Author ABSTRACT Metal working fluids (MWF) are basically two types, metal removal (chip making) and metal forming (chip-less). MWF are used in all aspects of production fabrication of refrigeration systems. Metal removal applications typically include turning followed by finish lapping of crankshafts and piston connecting rods, also milling and finish grinding of screw compressor vanes.
    [Show full text]
  • How to Make Rubber Jewelry Molds
    Excerpted from the book “ Modeling in Wax for Jewelry and Sculpture, 2nd Edition” published by Krause Publications of 700 E. State Street, Iola, Wisconsin. Used by permission of the author, artist and copyright holder. Rubber Molds For the purpose of reproducing a number of pieces from a single original model, rubber is the ideal material. The specially formulated rubber used in mold-making is able to hold an impression of even the most delicate detail work. It is also pliable, so that wax reproductions may easily be pulled from it. It is able to withstand the heat of the molten wax; and it is long lasting, so that many reproductions are possible from a single rubber mold. The rubber comes in strips, sheets, or rolls, and is individually cut to the correct size. It also comes in a variety of grades and in a sizable range of qualities. It is upon the grade and quality of the rubber that the shrinkage factor depends; the denser the rubber, the less it will contract after vulcanizing. But here too, discretion and economics must play a part. A grade-A quality rubber, which might be ideal for a highly detailed and precise model, would be a waste of money on a roughhewn silver bead, whereas a spongier rubber would never do justice to the finer model. So first the piece must be appraised by the mold- maker, not only for the quality of the rubber it demands, but also for the approach he will eventually take to cut it from the vulcanized mold.
    [Show full text]
  • Introduction to Casting for 3D Printed Jewelry Patterns
    Introduction to Casting for 3D Printed Jewelry Patterns The way jewelers work is changing, and castable photopolymer resins are leading the way. From independent designers concepting and prototyping in their studios, to casting houses increasing capacity and diversifying their offerings, digital fabrication techniques are increasingly key to growing a successful jewelry business. In this guide, learn how to cast fine jewelry pieces from patterns 3D printed on the Form 3. Request a Sample Part 3D Printed in Castable Wax Resin › Learn About Casting and Jewelry Production from Formlabs › July 2019 | formlabs.com What Is Direct Investment Casting? Direct investment casting, or lost wax casting, is a popular moldmaking technique that can be used to fabricate small and large parts in a wide variety of metals. Originating over 5,000 years ago, casting enables creators to work with a wide variety of materials and is one of the easiest ways to make metal parts. In investment casting, a hollow mold is created from a hand-sculpted or 3D printed master pattern. The master is immersed in a refractory casting material (or “investment”), which dries and hardens. The wax or 3D printed pattern is burned out, leaving a negative mold of the design. Metal is poured into this hollow cavity to create the final part. Wax patterns for intricate jewelry are complicated to produce by hand, and in a world driven by high demand and fast fashion, it can be difficult for hand-crafted pieces to keep pace. Advanced materials and affordable in-house 3D printers like the Form 2 are changing the way jewelry manufacturers and designers work, bringing industrial quality to the desktop and making it easier to produce and fit complicated geometries that once required hours of meticulous labor.
    [Show full text]
  • A Study of Metal Founding and Its Practices and Applications for Information Purposes in Industrial Arts Education
    Eastern Illinois University The Keep Plan B Papers Student Theses & Publications 1-1-1965 A Study of Metal Founding and its Practices and Applications for Information Purposes in Industrial Arts Education Jack Fuelle Follow this and additional works at: https://thekeep.eiu.edu/plan_b Recommended Citation Fuelle, Jack, "A Study of Metal Founding and its Practices and Applications for Information Purposes in Industrial Arts Education" (1965). Plan B Papers. 418. https://thekeep.eiu.edu/plan_b/418 This Dissertation/Thesis is brought to you for free and open access by the Student Theses & Publications at The Keep. It has been accepted for inclusion in Plan B Papers by an authorized administrator of The Keep. For more information, please contact [email protected]. A S'11UDY O:J:t"' NLE'rAL :B'OUNDING AND I'l1 S PRAC'rICES AND APPLICATIONS FOR INFOHMA'EION PURPOSES IN IlIDUSTHIAL At{rS ELJUUATION (TITLE) BY JacK .1melle PLAN B PAPER SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE MASTER OF SCIENCE IN EDUCATION AND PREPARED IN COURSE industrial Arts J75 IN THE GRADUATE SCHOOL, EASTERN ILLINOIS UNIVERSITY, CHARLESTON, ILLINOIS YEAR I HEREBY RECOMMEND THIS PLAN B PAPER BE ACCEPTED AS FULFILLING THIS PART OF THE DEGREE, M.S. IN ED. ----~'7fa6,ls ---~--~---- -~-~~- DATE ADVISER TABLE OF CONTENTS Chaplier Page I INTRODUCTION ••••••••••••••••••••••••••••••••• 1 Purpose Signiricance or tne Stua.y 'I'er.m.1no.logy II BRIEF HISTORY OF THE FOUNDHY ••••••••••••••••• b Ear.Lies1i Beginnings 5000 B. C• .lbOO B. C. Weapons in Ea:c.Ly Found.1.·y Work Guns.miths in Early Foundry Work Current Developments in Founding III FOUNDRY EQ,U.1Pl~'l'.
    [Show full text]
  • Aluminum Foundry Products
    ASM Handbook, Volume 2: Properties and Selection: Nonferrous Alloys and Special-Purpose Materials Copyright © 1990 ASM International® ASM Handbook Committee, p 123-151 All rights reserved. DOI: 10.1361/asmhba0001061 www.asminternational.org Aluminum Foundry Products Revised by A. Kearney, Avery Kearney & Company Elwin L. Rooy, Aluminum Company of America ALUMINUM CASTING ALLOYS are wrought alloys. Aluminum casting alloys cast aluminum alloys are grouped according the most versatile of all common foundry must contain, in addition to strengthening to composition limits registered with the alloys and generally have the highest cast- elements, sufficient amounts of eutectic- Aluminum Association (see Table 3 in the ability ratings. As casting materials, alumi- forming elements (usually silicon) in order article "Alloy and Temper Designation Sys- num alloys have the following favorable to have adequate fluidity to feed the shrink- tems for Aluminum and Aluminum Al- characteristics: age that occurs in all but the simplest cast- loys"). Comprehensive listings are also • Good fluidity for filling thin sections ings. maintained by general procurement specifi- The phase behavior of aluminum-silicon • Low melting point relative to those re- cations issued through government agencies compositions (Fig. 1) provides a simple quired for many other metals (federal, military, and so on) and by techni- • Rapid heat transfer from the molten alu- eutectic-forming system, which makes pos- cal societies such as the American Society sible the commercial viability of most high- minum to the mold, providing shorter for Testing and Materials and the Society of casting cycles volume aluminum casting. Silicon contents, Automotive Engineers (see Table 1 for ex- • Hydrogen is the only gas with apprecia- ranging from about 4% to the eutectic level amples).
    [Show full text]