ASTM A481-05(2020)
(Specification)Standard Specification for Chromium Metal
Standard Specification for Chromium Metal
ABSTRACT
This specification covers the standard requirements for several grades of chromium metal. Materials shall undergo chemical analysis procedures and shall adhere to specified chemical composition requirements. The metals shall also adhere to standard sizes, tolerances, and friability ratings according their grades.
SCOPE
1.1 This specification covers several grades of chromium metal.
1.2 The values stated in inch-pound units are to be regarded as the standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:A481 −05 (Reapproved 2020)
Standard Specification for
Chromium Metal
This standard is issued under the fixed designation A481; 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 4. Chemical Composition
1.1 This specification covers several grades of chromium 4.1 The various grades shall conform to the requirements as
metal. to chemical composition specified in Tables 1 and 2.
1.2 The values stated in inch-pound units are to be regarded 4.2 The manufacturer shall furnish an analysis of each
as the standard. shipment showing the elements specified in Table 1.
1.3 This international standard was developed in accor-
4.3 The values shown in Table 2 are expected maximums.
dance with internationally recognized principles on standard-
Upon request of the purchaser, the manufacturer shall furnish
ization established in the Decision on Principles for the
an analysis for any of these elements on a cumulative basis
Development of International Standards, Guides and Recom-
over a period mutually agreed upon between the manufacturer
mendations issued by the World Trade Organization Technical
and the purchaser.
Barriers to Trade (TBT) Committee.
5. Size
2. Referenced Documents
5.1 The various grades are available in sizes as listed in
2.1 ASTM Standards:
Table 3.
A1025/A1025M Specification for Ferroalloys and Other Al-
5.2 The sizes listed in Table 3 are typical as shipped from
loying Materials, General Requirements
the manufacturer’s plant. These alloys exhibit varying degrees
E11 Specification for Woven Wire Test Sieve Cloth and Test
of friability; therefore, some attrition may be expected in
Sieves
transit, storage, and handling. A quantitative test is not avail-
E363 Test Methods for ChemicalAnalysis of Chromium and
able for rating relative friability of ferroalloys. A code system
Ferrochromium
has been developed, therefore, for this purpose, and a number
rating each product type is shown in the last column of Table
3. General Conditions for Delivery
3. Definitions applicable to these code numbers are given in
3.1 Materials furnished to this specification shall conform to
Specification A1025/A1025M.
the requirements of Specification A1025/A1025M, including
any supplementary requirements that are indicated in the
6. Chemical Analysis
purchase order. Failure to comply with the general require-
6.1 The chemical analysis of the material shall be made in
ments of Specification A1025/A1025M constitutes nonconfor-
accordance with the procedure for the ferroalloys as described
mance with this specification. In case of conflict between the
in Test Methods E363 or alternative methods, agreed upon by
requirements of this specification and Specification A1025/
the purchaser and supplier, that will yield equivalent results.
A1025M, this specification shall prevail.
6.2 If alternative methods of analysis are used, in case of
discrepancy, Test Methods E363 shall be used for referee.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
6.3 Where no method is given in Test Methods E363 for the
A01.18 on Castings.
analysis for a particular element, the analysis shall be made in
Current edition approved March 1,
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