ASTM A101-04(2014)e1
(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.
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´1
Designation:A101 −04 (Reapproved 2014)
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.
ε NOTE—Editorial changes were made to Table 2 in April 2016.
1. Scope In case of conflict between the requirements of this specifica-
tion and Specification A1025, this specification shall prevail.
1.1 This specification covers two types of ferrochromium
designated as high carbon and low carbon, the latter including
4. Chemical Composition
nitrogen-bearing and vacuum grades.
4.1 The grades shall conform to the requirements as to
1.2 The values stated in inch-pound units are to be regarded
chemical composition specified in Table 1. The manufacturer
as standard. The values given in parentheses are mathematical
shall furnish an analysis of each shipment showing the ele-
conversions to SI units that are provided for information only
ments specified in Table 1.
and are not considered standard.
5. Size
2. Referenced Documents
5.1 The various grades are available in sizes as listed in
2.1 ASTM Standards:
Table 2.
A1025 Specification for Ferroalloys and Other Alloying
5.2 The sizes listed in Table 2 are typical, as shipped from
Materials, General Requirements
the manufacturer’s plant. These alloys exhibit varying degrees
E363 Test Methods for ChemicalAnalysis of Chromium and
of friability; therefore, some attrition may be expected in
Ferrochromium
transit, storage, and handling. A quantitative test is not avail-
3. General Conditions for Delivery
able for rating relative friability of ferroalloys. A code system
has been developed, therefore, for this purpose, and a number
3.1 Materials furnished to this specification shall conform to
rating for each product type is shown in the last column of
therequirementsofSpecificationA1025,includinganysupple-
Table 2. Definitions applicable to these code numbers are given
mentary requirements that are indicated in the purchase order.
in Specification A1025.
Failure to comply with the general requirements of Specifica-
tion A1025 constitutes nonconformance with this specification.
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,
the purchaser and supplier.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
6.2 In cases of discrepancy, Test Methods E363 shall be
Current edition approved Oct. 1, 2014. Published October 2014. Originally
used for referee purposes.
approved in 1925. Last previous edition approved in 2009 as A101 – 04(2009).
DOI: 10.1520/A0101-04R14E01.
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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
A101−04 (2014)
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 0.015 max 2.0 max 0.030 0.030 .
G 63.0–68.0 0.050 max 2.0 max 0.030 0.030 5.0–6.5
Nitrogen bearing 62.0–70.0 0.10 max 1.0 max 0.025 0.030 1.0–5.0
TABLE 2 Standard Sizes and Tolerances
Friability
Product Standard Sizes Tolerances
Ratings
Ferr
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: A101 − 04 (Reapproved 2014) A101 − 04 (Reapproved 2014)
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.
ε NOTE—Editorial changes were made to Table 2 in April 2016.
1. 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.
2. Referenced Documents
2.1 ASTM Standards:
A1025 Specification for Ferroalloys and Other Alloying Materials, General Requirements
E363 Test Methods for Chemical Analysis of Chromium and Ferrochromium
3. General Conditions for Delivery
3.1 Materials furnished to this specification shall conform to the requirements of Specification A1025, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
Specification A1025 constitutes nonconformance with this specification. In case of conflict between the requirements of this
specification and Specification A1025, this specification shall prevail.
4. Chemical Composition
4.1 The grades shall conform to the requirements as to chemical composition specified in Table 1. The manufacturer shall
furnish an analysis of each shipment showing the elements specified in Table 1.
5. Size
5.1 The various grades are available in sizes as listed in Table 2.
5.2 The sizes listed in Table 2 are typical, as shipped from the manufacturer’s plant. These alloys exhibit varying degrees of
friability; therefore, some attrition may be expected in transit, storage, and handling. A quantitative test is not available for rating
relative friability of ferroalloys. A code system has been developed, therefore, for this purpose, and a number rating for each
product type is shown in the last column of Table 2. Definitions applicable to these code numbers are given in Specification A1025.
6. Chemical Analysis
6.1 The chemical analysis method shall be agreed upon by the purchaser and supplier.
6.2 In cases of discrepancy, Test Methods E363 shall be used for referee purposes.
7. Keywords
7.1 ferroalloys; ferrochromium; high carbon; low carbon; nitrogen-bearing; vacuum low carbon
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.18
on Castings.
Current edition approved Oct. 1, 2014. Published October 2014. Originally approved in 1925. Last previous edition approved in 2009 as A101 – 04(2009). DOI:
10.1520/A0101-04R14.10.1520/A0101-04R14E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
A101 − 04 (2014)
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 0.015 max 2.0 max 0.030 0.030 . . .
G 63.0–68.0 0.050 max 2.0 max 0.030 0.030 5.0–6.5
Nitrogen bearing 62.0–70.0 0.10 max 1.0 max 0.025 0.030 1.0–5.0
...
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