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ASTM B275-14

(Practice)

Standard Practice for Codification of Certain Zinc, Tin and Lead Die Castings (Withdrawn 2020)

Standard Practice for Codification of Certain Zinc, Tin and Lead Die Castings (Withdrawn 2020)

ABSTRACT
This practice covers a system for designating cast and wrought nonferrous metals and alloys. It was originally adopted for light metals and alloys that are cast and wrought and later extended to heavier base-metal die-casting alloys. Chemical composition limits serve as the basis for the Unified Numbering System (UNS) designations. The temper designations used for all metal forms, except for ingots, follow the alloy designation.
SCOPE
1.1 This practice covers a system for designating die casting alloys of zinc, tin and lead. Those designations currently being used in specifications under the jurisdiction of Committees B02 on Nonferrous Metals are listed in Table X2.1 in Appendix X2.
Note 1: The alloy designations now being used in Committee B07 specifications for aluminum and aluminum-alloy wrought and cast products conform to ANSI H35.1. Alloys formerly codified by this practice and the corresponding ANSI designations are shown in Tables X3.1 and X3.2 of Appendix X3 for legacy purposes.
Note 2: The alloy designations now being used in Committee B07 specifications for magnesium and magnesium-alloy wrought and cast products conform to Practice B951, as indicated in Appendix X4. Alloy designations formerly codified by this practice are no longer relevant.  
1.2 The equivalent Unified Numbering System (UNS) alloy designations shown in the appendixes are in accordance with Practice E527.
WITHDRAWN RATIONALE
This practice covers a system for designating die casting alloys of zinc, tin and lead.
Formerly under the jurisdiction of Committee B02 on Nonferrous Metals and Alloys, this practice was withdrawn in April 2020. This standard is being withdrawn without replacement because the alloy designations established by the standard are no longer in use.

General Information

Status
Withdrawn
Publication Date
30-Sep-2014
Withdrawal Date
14-Apr-2020
ICS
77.150.01 - Products of non-ferrous metals in general
Technical Committee
B02 - Nonferrous Metals and Alloys
Drafting Committee
B02.04 - Zinc and Cadmium
Current Stage
Ref Project

Relations

Referred By
ASTM B327-21 - Standard Specification for Master Alloys Used in Making Zinc Die Casting Alloys
Effective Date
01-Oct-2014
Referred By
ASTM B908-22 - Standard Practice for the Use of Color Codes for Zinc Casting Alloy Ingot
Effective Date
01-Oct-2014
Referred By
ASTM B240-22 - Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloys in Ingot Form for Foundry and Die Castings
Effective Date
01-Oct-2014
Referred By
ASTM B86-22 - Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings
Effective Date
01-Oct-2014
Referred By
ASTM B26/B26M-18e1 - Standard Specification for Aluminum-Alloy Sand Castings
Effective Date
01-Oct-2014
Referred By
ASTM B917/B917M-12(2020) - Standard Practice for Heat Treatment of Aluminum-Alloy Castings From All Processes
Effective Date
01-Oct-2014
Referred By
ASTM B618/B618M-18e1 - Standard Specification for Aluminum-Alloy Investment Castings
Effective Date
01-Oct-2014
Referred By
ASTM B108/B108M-19 - Standard Specification for Aluminum-Alloy Permanent Mold Castings
Effective Date
01-Oct-2014
Referred By
ASTM B969/B969M-18e1 - Standard Specification for Aluminum-Alloy Castings Produced by Squeeze Casting, and the Semi-Solid Thixocast and Rheocast Casting Processes
Effective Date
01-Oct-2014
Referred By
ASTM B955/B955M-18 - Standard Specification for Aluminum-Alloy Centrifugal Castings
Effective Date
01-Oct-2014
Referred By
ASTM B85/B85M-18e1 - Standard Specification for Aluminum-Alloy Die Castings
Effective Date
01-Oct-2014
Referred By
ASTM B686/B686M-18 - Standard Specification for Aluminum Alloy Castings, High-Strength
Effective Date
01-Oct-2014

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ASTM B275-14 - Standard Practice for Codification of Certain Zinc, Tin and Lead Die Castings (Withdrawn 2020)ASTM B275-14 - Standard Practice for Codification of Certain Zinc, Tin and Lead Die Castings (Withdrawn 2020)
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ASTM B275-14 - Standard Practice for Codification of Certain Zinc, Tin and Lead Die Castings (Withdrawn 2020)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B275 −14
Standard Practice for
1
Codification of Certain Zinc, Tin and Lead Die Castings
This standard is issued under the fixed designation B275; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* Magnesium-Alloys, Cast and Wrought
E527 Practice for Numbering Metals and Alloys in the
1.1 Thispracticecoversasystemfordesignatingdiecasting
Unified Numbering System (UNS)
alloys of zinc, tin and lead. Those designations currently being
4
2.3 ANSI Standard:
usedinspecificationsunderthejurisdictionofCommitteesB02
H35.1 Alloy and Temper Designation Systems for Alumi-
on Nonferrous Metals are listed in Table X2.1 in Appendix
num
X2.
NOTE 1—The alloy designations now being used in Committee B07
specifications for aluminum and aluminum-alloy wrought and cast prod- 3. Basis of Codification
uctsconformtoANSIH35.1.Alloysformerlycodifiedbythispracticeand
3.1 The designations for alloys and unalloyed metals are
the correspondingANSI designations are shown in Tables X3.1 and X3.2
based on their chemical composition limits.
of Appendix X3 for legacy purposes.
NOTE 2—The alloy designations now being used in Committee B07
3.2 Designations shall be assigned, revised, and cancelled
specifications for magnesium and magnesium-alloy wrought and cast
by Subcommittee B02.04 of ASTM Committee B02 on Non-
products conform to Practice B951, as indicated in Appendix X4. Alloy
ferrous Metals and Alloys on written requests to its chairman.
designations formerly codified by this practice are no longer relevant.
Complete chemical composition limits shall be submitted with
1.2 The equivalent Unified Numbering System (UNS) alloy
request for assignment or revision of designations. Arbitrary
designations shown in the appendixes are in accordance with
assignments by other subcommittees or committees will not be
Practice E527.
recognized.
2. Referenced Documents
4. Alloys
2.1 The following documents form a part of this practice to
4.1 Designationforalloysshallconsistofnotmorethantwo
the extent referenced herein:
letters representing the alloying elements (Note 3) specified in
2
2.2 ASTM Standards:
the greatest amount, arranged in order of decreasing
B86 Specification for Zinc and Zinc-Aluminum (ZA) Alloy
percentages, or in alphabetical order if of equal percentages,
Foundry and Die Castings
followed by the respective percentages rounded off to whole
B102 Specification for Lead- and Tin-Alloy Die Castings
numbers and a serial letter (Notes 4 and 5). The full name of
3
(Withdrawn 2011)
the base metal precedes the designation, but it is omitted for
B240 Specification for Zinc and Zinc-Aluminum (ZA) Al-
brevity when the base metal being referred to is obvious.
loys in Ingot Form for Foundry and Die Castings
NOTE 3—For codification, an alloying element is defined as an element
B327 Specification for Master Alloys Used in Making Zinc
(other than the base metal) having a minimum content greater than zero
Die Casting Alloys
either directly specified or computed in accordance with the percentages
B951 PracticeforCodificationofUnalloyedMagnesiumand
specified.
NOTE 4—The serial letter is arbitrarily assigned in alphabetical se-
quencestartingwith“A”(omitting“I”and“O”)andservestodifferentiate
1
This practice is under the jurisdiction ofASTM Committee B02 on Nonferrous otherwise identical designations. A serial letter is necessary to complete
Metals andAlloys and is the direct responsibility of Subcommittee B02.04 on Zinc each designation.
and Cadmium.
NOTE 5—The designation of a casting alloy in ingot form is derived
Current edition approved Oct. 1, 2014. Published October 2014. Originally
from the composition specified for the corresponding alloy in the form of
ε1
approved in 1962. Last previous edition approved in 2013 as B275 – 13 . DOI:
castings. Thus, a casting ingot designation may consist of an alloy
10.1520/B0275-14.
designation having one or more serial letters, one for each product
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
composition, or it may consist of one or more alloy designations.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
The last approved version of this historical standard is referenced on Available in the Related Materials section (gray pages) of the Annual Book of
www.astm.org. ASTM Standards, Vol 02.02.
*A Summary of Changes section appears at the end of this standard
Copyright ©
...

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ASTM
ASTM D6281-23(Test Method)
Standard Test Method for Airborne Asbestos Concentration in Ambient and Indoor Atmospheres as Determined by Transmission Electron Microscopy Direct Transfer (TEM)

SIGNIFICANCE AND USE
5.1 This test method is applicable to the measurement of airborne asbestos in a wide range of ambient air situations and for detailed evaluation of any atmosphere for asbestos structures. Most fibers in ambient atmospheres are not asbestos, and therefore, there is a requirement for fibers to be identified. Most of the airborne asbestos fibers in ambient atmospheres have diameters below the resolution limit of the light microscope. This test method is based on transmission electron microscopy, which has adequate resolution to allow detection of small thin fibers and is currently the only technique capable of unequivocal identification of the majority of individual fibers of asbestos. Asbestos is often found, not as single fibers, but as very complex, aggregated structures, which may or may not also be aggregated with other particles. The fibers found suspended in an ambient atmosphere can often be identified unequivocally if sufficient measurement effort is expended. However, if each fiber were to be identified in this way, the analysis would become prohibitively expensive. Because of instrumental deficiencies or because of the nature of the particulate matter, some fibers cannot be positively identified as asbestos even though the measurements all indicate that they could be asbestos. Therefore, subjective factors contribute to this measurement, and consequently, a very precise definition of the procedure for identification and enumeration of asbestos fibers is required. The method defined in this test method is designed to provide a description of the nature, numerical concentration, and sizes of asbestos-containing particles found in an air sample. The test method is necessarily complex because the structures observed are frequently very complex. The method of data recording specified in the test method is designed to allow reevaluation of the structure-counting data as new applications for measurements are developed. All of the feasible specimen preparation techn...
SCOPE
1.1 This test method2 is an analytical procedure using transmission electron microscopy (TEM) for the determination of the concentration of asbestos structures in ambient atmospheres and includes measurement of the dimension of structures and of the asbestos fibers found in the structures from which aspect ratios are calculated.  
1.1.1 This test method allows determination of the type(s) of asbestos fibers present.  
1.1.2 This test method cannot always discriminate between individual fibers of the asbestos and non-asbestos analogues of the same amphibole mineral.  
1.2 This test method is suitable for determination of asbestos in both ambient (outdoor) and building atmospheres.  
1.2.1 This test method is defined for polycarbonate capillary-pore filters or cellulose ester (either mixed esters of cellulose or cellulose nitrate) filters through which a known volume of air has been drawn and for blank filters.  
1.3 The upper range of concentrations that can be determined by this test method is 7000 s/mm2. The air concentration represented by this value is a function of the volume of air sampled.  
1.3.1 There is no lower limit to the dimensions of asbestos fibers that can be detected. In practice, microscopists vary in their ability to detect very small asbestos fibers. Therefore, a minimum length of 0.5 μm has been defined as the shortest fiber to be incorporated in the reported results.  
1.4 The direct analytical method cannot be used if the general particulate matter loading of the sample collection filter as analyzed exceeds approximately 10 % coverage of the collection filter by particulate matter.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropri...

  • Standard
    33 pages
    English language
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  • Standard
    33 pages
    English language
    sale 15% off