ASTM B562-95(1999)
(Specification)Standard Specification for Refined Gold
Standard Specification for Refined Gold
SCOPE
1.1 This specification covers refined gold in cast bar form (Note 1).
1.1.1 Grade 99.5 -Gold having a minimum fineness of 995.
1.1.2 Grade 99.95 -Gold having a minimum fineness of 999.5.
1.1.3 Grade 99.99 -Gold having a minimum fineness of 999.9.
1.1.4 Grade 99.995 -Gold having a minimum fineness of 999.95. Note 1-Other forms of unfabricated gold of commerce are not to be excluded under this specification.
1.2 The values stated in inch-pound units are to be regarded as the standard.
1.3 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: B 562 – 95 (Reapproved 1999)
Standard Specification for
Refined Gold
This standard is issued under the fixed designation B 562; 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 4. Chemical Composition
1.1 This specification covers refined gold in cast bar form 4.1 The refined gold shall conform to the chemical compo-
(Note 1). sition prescribed in Table 1.
1.1.1 Grade99.5—Goldhavingaminimumfinenessof995.
NOTE 2—For purposes of determining conformance with this specifi-
1.1.2 Grade 99.95— Gold having a minimum fineness of
cation, an observed value obtained from analysis shall be rounded to the
999.5.
nearest unit in the last right-hand place of figures used in expressing the
1.1.3 Grade 99.99— Gold having a minimum fineness of limiting value, in accordance with the rounding method of Practice E 29.
999.9.
5. Sampling
1.1.4 Grade 99.995— Gold having a minimum fineness of
999.95. 5.1 On agreement between the manufacturer and the pur-
chaser, a sample may be taken from the melt before pouring
NOTE 1—Other forms of unfabricated gold of commerce are not to be
(Note 3). The sample shall be in the form of shot or pins (Note
excluded under this specification.
4 and Note 5).
1.2 The values stated in inch-pound units are to be regarded
NOTE 3—Asingle melt or bar(s) cast from a single melt shall constitute
as the standard.
a lot for sampling.
1.3 This standard does not purport to address all of the
NOTE 4—Pins of ⁄8 in. (9.5 mm) or other suitable diameter may be cast
safety concerns, if any, associated with its use. It is the
into graphite molds or drawn into evacuated glass tubes. In some cases it
responsibility of the user of this standard to establish appro-
may be necessary to draw the glass tube pins through 60-grit emery paper
priate safety and health practices and determine the applica-
before acid leaching to remove adhering glass particles.
bility of regulatory limitations prior to use. NOTE 5—In order to avoid surface contamination, the sample, irrespec-
tive of its nature, is to be leached in hot 1 + 1 HCl for 5 min, washed in
2. Referenced Documents water, rinsed twice in alcohol or acetone, and dried in a muffle at 110°C
before portions are taken for analysis.
2.1 ASTM Standards:
5.2 On agreement between manufacturer and purchaser an
E 29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications alternative sampling procedure may be used.
5.3 The amount of sample taken shall be sufficient to supply
E 1446 Test Method for ChemicalAnalysis of Refined Gold
by Direct Current Plasma Emission Spectroscopy three portions for analysis; the mass of each portion shall be
sufficient to permit the determination of its composition as set
3. Materials and Manufacture
forth in Table 1.
3.1 The metal may be produced by any process that yields a 5.4 After mixing thoroughly, the sample shall be divided
product capable of meeting the requirements of this specifica- into three parts, each placed in a package and sealed; one for
tion. The purchaser, upon request, shall be informed of the the manufacturer, one for the purchaser, and one for the
refining process used. umpire.
3.2 The bars shall be of a quality generally acceptable to the 5.5 All tools required are to be reserved exclusively for this
trade. work.
6. Method ofAnalysis
This specification is under the jurisdiction of ASTM Committee B-2 on
6.1 Chemical composition of the materials set forth in this
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
specification shall be determined, in case of disagreement, in
B02.05 on Precious Metals.
accordance with Test Method E 1446. The selection of test
Current edition approved Feb. 15, 1995. Published April 1995. Originally
published as B 562 – 72. Last previous edition B 562 – 86.
methods for the determination of elements not covered by that
Annual Book of ASTM Standards, Vol 14.02.
Annual Book of ASTM Standards, Vol. 03.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B 562 – 95 (1999)
TABLE 1 Chemical Requirements
Composition,%
A
Element
Grade 99.5 Grade 99.95 Grade 99.99 Grade 99.995
Gold, min 99.5 . . .
Gold, min (by difference) . 99.95 99.99 99.995
Silver + copper, max . 0.04 . .
Silver, max . 0.035 0.009 0.001
Copper, max . 0.02 0.005 0.001
Palladium, max . 0.02 0.005 0.001
Iron, max . 0.005 0.002 0.001
Lead, max . 0.005 0.002 0.001
Silicon, max . . 0.005 0.001
Magnesium, max . . 0.003 0.001
Arsenic, max . . 0.003 .
Bismuth, max . . 0.002 0.001
Tin, max . . 0.001 0.001
Chromium, max . . 0.0003 0.0003
Nickel, max . . 0.0003 .
Manganese, max . . 0.0003 0.0003
A
By agreement between manufacturer and purchaser analyses may be required and limits established for elements not specified in this table.
test method shall be a matter of agreement between the the purchaser, and one for an umpire, if necessary. The
manufacturer and the purchaser. manufacturer and the purchaser shall each make an analysis,
6.2 Chemical composition of materials required for Grade and if the results do not establish or dismiss the claim to the
99.5 refined gold shall be determined by a test method similar satisfaction of both parties, the third sample shall be submitted
to the fire assay test method listed in the appendix. to a mutually agreeable umpire, who shall determine the
question of fact, and whose determination shall be final.
7. Rejection and Rehearing
8. Settlement of Claims
7.1 Rejection:
7.1.1 Claims to be considered shall be made to the manu- 8.1 The expenses of the manufacturer’s representative and
facturer in writing within 30 days of receipt of the material at oftheumpireshallbepaidbytheloserordividedinproportion
the purchaser’s plant, and the results of tests made by the to the concession made in case of compromise. In the case of
purchaser shall accompany such claims. The manufacturer
rejection being established, the damages shall be limited to the
shall be given one week from the date of receipt of the payment of transportation charges both ways by the manufac-
complaint to investigate his records, and shall then agree either
turer for substitution of an equivalent weight of gold conform-
to satisfy the claim or to submit samples to an umpire. No ing to this specification.
claim shall be considered unless a portion of the original gold
9. Product Marking
bars can be shown to t
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