ASTM E1916-97

Standard Guide for Identification and/or Segregation of Mixed Lots of Metals

SCOPE
1.1 This guide covers the identification or segregation, or both, of mixed metal lots under plant condition using trained plant personnel.

General Information

• Status: Historical
• Publication Date: 09-Nov-1997
• ICS: 77.040.99 - Other methods of testing of metals
• Technical Committee: E01 - Analytical Chemistry for Metals, Ores, and Related Materials
• Drafting Committee: E01.20 - Fundamental Practices

Relations

• Replaced By: ASTM E1916-97(2004) - Standard Guide for Identification and/or Segregation of Mixed Lots of Metals
• Effective Date: 01-May-2004
• Referred By: ASTM A961/A961M-23 - Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
• Effective Date: 10-Nov-1997
• Referred By: ASTM A788/A788M-23 - Standard Specification for Steel Forgings, General Requirements
• Effective Date: 10-Nov-1997
• Referred By: ASTM B462-18e1 - Standard Specification for Forged or Rolled Nickel Alloy Pipe Flanges, Forged Fittings, and Valves and Parts for Corrosive High-Temperature Service
• Effective Date: 10-Nov-1997
• Referred By: ASTM A962/A962M-23a - Standard Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
• Effective Date: 10-Nov-1997
• Referred By: ASTM B366/B366M-23 - Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
• Effective Date: 10-Nov-1997
• Referred By: ASTM A960/A960M-23 - Standard Specification for Common Requirements for Wrought Steel Piping Fittings
• Effective Date: 10-Nov-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: E 1916 – 97
Standard Guide for
Identification and/or Segregation of Mixed Lots of Metals
This standard is issued under the fixed designation E 1916; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 The equipment and procedures described in this guide
may also be suitable for identifying or segregating, or both,
1.1 This guide covers the identification or segregation, or
scrap metals.
both, of mixed metal lots under plant condition using trained
plant personnel.
4. Equipment
1.2 The identification is not intended to have the accuracy
4.1 Optical Emission Spectroscopic or Spectrometric
and reliability of procedures performed in a laboratory using
Equipment:
laboratory equipment under optimum conditions, and per-
4.1.1 Bench type spectroscopes generally with two sample
formed by trained chemists or technicians. The identification is
tables and a split viewing field where the spectrum of the
not intended to establish whether a given piece or lot of metal
unknown piece can be visually and directly compared to that of
meets specifications.
a piece of identified metal.
1.3 Segregation of certain metal combinations is not always
4.1.2 Mobile spectrometric equipment with a remote sam-
possible with procedures provided in this guide and can be
pling device. Two types of such units are described in 4.1.2.1
subject to errors.
and 4.1.2.2.
1.4 This standard does not purport to address all of the
4.1.2.1 Units where the particles removed by an arc or spark
safety concerns, if any, associated with its use. It is the
in the remote sampling device are conveyed to the main unit in
responsibility of the user of this standard to establish appro-
a stream of inert gas and analyzed in the unit in a conventional
priate safety and health practices and determine the applica-
way with an arc, spark, or plasma.
bility of regulatory limitations prior to use.
4.1.2.2 Units where the light generated from the arc or spark
2. Referenced Documents at the remote sampling device is conveyed to the main unit
with fiberoptics, where it is analyzed in the conventional way.
2.1 ASTM Standards:
(a) These units generally are programmed to produce an
E 50 Practices for Apparatus, Reagents, and Safety Precau-
output that: (1) shows the designation of the alloy, (2) gives the
tions for Chemical Analysis of Metals
approximate elemental composition of the alloy, or (3) gives a
E 977 Practice for Thermoelectric Sorting of Electrically
“go” or “no-go” indication based on parameters programmed
Conductive Materials
by the operator.
2.2 Other ASTM Documents and Publications:
(b) These units require careful calibration and depend on the
STP 98 Symposium for Rapid Identification of Metal, June
quality and range of the reference materials used for the
28, 1949
calibration.
3. Significance and Use 4.2 X-ray Fluorescence Spectrometric Equipment:
4.2.1 The portable and mobile units are supplied with a
3.1 Equipment and procedures described in this guide are
source of radiation that can be an X-ray tube or radioactive
comparative methods and are intended for identification or
isotopes, generally a mixture of two or more isotopes to
segregation, or both, of pieces or lots of metals that were mixed
provide a larger spectrum coverage.
or lost their identity during certain manufacturing operations. It
4.2.1.1 These units are generally programmed to produce an
is presumed that all pieces or lots of metal have been
output that: (1) shows the designation of the alloy, (2) gives the
previously checked and did meet applicable specifications.
approximate elemental composition of the alloy, or (3) gives a
“go” or “no-go” indication based on parameters programmed
This guide is under the jurisdiction of ASTM Committee E-1 on Analytical
by the operator (see 4.1.2.2(b)).
Chemistry of Metals, Ores and Related Materials and is the direct responsibility of
4.3 Miscellaneous Sorting Instruments:
Subcommittee E01.20 on Fundamental Practices and Measurement Traceability.
4.3.1 All instruments based on comparative methods require
Current edition approved November 10, 1997. Published June 1998.
Annual Book of ASTM Standards, Vol 03.05. careful calibration with appropriate reference materials.
Annual Book of ASTM Standards, Vol 03.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E 1916
4.3.2 Thermoelectric Comparators—Instruments are based 6.4 Reference materials should also be used for chemical
on the Seeback Effect. These instruments are not for identifi- spot checks. They should have a considerable surface area, and
cation of alloys, but for segregation of one metal alloy from the surface finish should match that of the pieces to be tested.
another (See Practice E 977 and Materials Research and
7. Hazards
Standards ).
7.1 When using grinding wheels, regardless of whether they
4.3.3 Eddy-current Instrumentation—These instruments are
are used for surface preparation or for identification of metals
not for identification of alloys, but for segregation of identical
by spark testing, proper eye protection should be used at all
pieces of metal of identical shape and size based on their
times.
metallurgical condition or alloy composition under certain
7.2 Manufacturer’s safety instructions regarding spectro-
circumstances.
scopic, spectrometric, and other equipment using electric
4.4 Non-Instrumental Sorting Equipment:
current should be carefully followed.
4.4.1 Grinder—High speed bench or portable grindstones
7.2.1 Proper grounding is especially important for electrical
are frequently used for rough identification and sorting of
equipment used under plant conditions.
metals by observation of the shape and color of the generated
7.2.2 Wet floor conditions should be considered.
spark.
4.4.2 Drill Press—for identification of drill cuttings by 7.3 Reagents involved in spot tests can be highly reactive,
and proper
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