ASTM A146-04(2009)
(Specification)Standard Specification for Molybdenum Oxide Products
Standard Specification for Molybdenum Oxide Products
ABSTRACT
This specification covers four grades of molybdenum oxide, designates as A, B1, B2, and molybdic oxide briquets. The various grades shall conform to the required chemical compositions of molybdenum, sulfur, and copper. The materials shall be sampled and shall undergo correction of the sample to dry net weight.
SCOPE
1.1 This specification covers four grades of molybdenum oxide, designated as A, B1, B2, and molybdic oxide briquets.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:A146 −04(Reapproved 2009)
Standard Specification for
Molybdenum Oxide Products
This standard is issued under the fixed designation A146; 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.
1. Scope and the combined content of these bags shall be reduced and
analyzed as a separate sample. When a shipment cannot be
1.1 This specification covers four grades of molybdenum
divided by lot numbers, one twentieth of the total number of
oxide, designated as A, B1, B2, and molybdic oxide briquets.
bags constituting the shipment shall be selected and treated as
1.2 The values stated in inch-pound units are to be regarded
one sample. The material forming a sample shall be crushed if
as standard. The values given in parentheses are mathematical
necessary, and in any event passed through a No. 10 (2.00-mm)
conversions to SI units that are provided for information only
sieve. The sample after sieving shall be thoroughly mixed by
and are not considered standard.
coning and then reduced to about 2 lb (0.9 kg) by quartering or
2. Referenced Documents by means of a riffle sampler. The reduced sample shall then be
2 crushed and passed through a No. 60 (250-µm) sieve. The
2.1 ASTM Standards:
sample after sieving shall again be mixed by coning and then
A1025 Specification for Ferroalloys and Other Alloying
divided through a riffle, preferably a Jones divider, into the
Materials, General Requirements
required number of analytical samples.
3. General Conditions for Delivery
5.2 Sampling Large Containers—When packed in drums or
3.1 Materials furnished to this specification shall conform to
largebagsorcartons,thematerialshallbesampledbyselecting
therequirementsofSpecificationA1025,includinganysupple-
about one twentieth of the content of each package that may
mentary requirements that are indicated in the purchase order.
bear the same manufacturing lot number, and the combined
Failure to comply with the general requirements of Specifica-
material selected shall be reduced and analyzed as a separate
tion A1025 constitutes nonconformance with this specification.
sample. When a shipment cannot be divided by lot numbers,
In case of conflict between the requirements of this specifica-
about one twentieth of the content of each package in the
tion and Specification A1025, this specification shall prevail.
shipment shall be selected, and the combined material selected
shall be treated as one sample. The material comprising a
4. Chemical Requirements
sample shall be thoroughly mixed by coning and reduced by
4.1 The various grades shall conform to the requirements as
half-shoveling, alternating the operations until the residual
to chemical composition specified in Table 1.
weight reaches about 40 lb (18.1 kg). Segregation of sizes shall
4.2 The manufacturer shall furnish an analysis of each
be carefully avoided. The sample thus reduced shall be
shipment showing the percentage of each element specified.
crushed, if necessary, to pass through a No. 10 (2.00-mm)
sieve, and the subsequent sampling procedure shall be as
5. Sampling
prescribed in 5.1 .
5.1 Sampling Small Bags—When packed in the standard-
5.3 Correcting Sample to Dry Net Weight—Absorption of
ized small packages, each holding contained molybdenum, the
material shall be sampled by selec
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