ASTM A101-04(2019)
(Specification)Standard Specification for Ferrochromium
Standard Specification for Ferrochromium
ABSTRACT
This specification covers two types of ferrochromium designated as high carbon and low carbon, the latter including nitrogen-bearing and vacuum grades. The grades which are available in different sizes shall conform to the required chemical composition for chromium, carbon, silicon, sulfur, phosphorus, and nitrogen.
SCOPE
1.1 This specification covers two types of ferrochromium designated as high carbon and low carbon, the latter including nitrogen-bearing and vacuum grades.
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.
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: A101 −04 (Reapproved 2019)
Standard Specification for
Ferrochromium
This standard is issued under the fixed designation A101; 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 any supplementary requirements that are indicated in the
purchase order. Failure to comply with the general require-
1.1 This specification covers two types of ferrochromium
ments of Specification A1025/A1025M constitutes nonconfor-
designated as high carbon and low carbon, the latter including
mance with this specification. In case of conflict between the
nitrogen-bearing and vacuum grades.
requirements of this specification and Specification A1025/
1.2 The values stated in inch-pound units are to be regarded
A1025M, this specification shall prevail.
as standard. The values given in parentheses are mathematical
4. Chemical Composition
conversions to SI units that are provided for information only
and are not considered standard.
4.1 The grades shall conform to the requirements as to
chemical composition specified in Table 1. The manufacturer
1.3 This international standard was developed in accor-
shall furnish an analysis of each shipment showing the ele-
dance with internationally recognized principles on standard-
ments specified in Table 1.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5. Size
mendations issued by the World Trade Organization Technical
5.1 The various grades are available in sizes as listed in
Barriers to Trade (TBT) Committee.
Table 2.
2. Referenced Documents
5.2 The sizes listed in Table 2 are typical, as shipped from
2.1 ASTM Standards:
the manufacturer’s plant. These alloys exhibit varying degrees
A1025/A1025M Specification for Ferroalloys and Other Al-
of friability; therefore, some attrition may be expected in
loying Materials, General Requirements
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 for each product type is shown in the last column of
3. General Conditions for Delivery
Table 2. Definitions applicable to these code numbers are given
3.1 Materials furnished to this specification shall conform to
in Specification A1025/A1025M.
the requirements of Specification A1025/A1025M, including
6. Chemical Analysis
6.1 The chemical analysis method shall be agreed upon by
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
the purchaser and supplier.
A01.18 on Castings.
6.2 In cases of discrepancy, Test Methods E363 shall be
Current edition approved Nov. 1, 2019. Published November 2019. Originally
approved in 1925. Last previous edition approved in 2014 as A101 – 04 (2014).
used for referee purposes.
DOI: 10.1520/A0101-04R19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Keywords
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 ferroalloys; ferrochromium; high carbon; low carbon;
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. nitrogen-bearing; vacuum low carbon
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A101 − 04 (2019)
TABLE 1 Chemical Requirements
Composition, %
Type Ferrochromium
Sulfur, Phosphorus,
Grade Chromium Carbon Silicon Nitrogen
max max
High carbon A 51.0–56.0 6.0–8.0 6.0 max 0.040 0.030 .
B 56.0–62.0 6.0–8.0 8.0–14.0 0.050 0.030 .
C 62.0 min 6.0–8.0 3.0 max 0.050 0.030 .
Low carbon A 60.0–67.0 0.025 max 1.0–8.0 0.025 0.030 . . .
B 67.0–75.0 0.025 max 1.0 max 0.025 0.030 . . .
C 67.0–75.0 0.050 max 1.0 max 0.025 0.030 . . .
D 67.0–75.0 0.75 max 1.0 max 0.025 0.030 . . .
Vacuum low carbon E 66.0–70.0
...
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