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ASTM A550-06(2010)

(Specification)

Standard Specification for Ferrocolumbium

Standard Specification for Ferrocolumbium

ABSTRACT
This specification covers three grades of ferrocolumbium, designated low-alloy steel grade, alloy and stainless steel grade, and high-purity grade. The material shall conform to the requirements as to chemical composition. Also, the ferrocolumbium shall be available in the sizes and tolerances specified.
SCOPE
1.1 This specification covers three grades of ferrocolumbium, designated Low-Alloy Steel Grade, Alloy and Stainless Steel Grade, and High-Purity Grade.  
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.

General Information

Status
Historical
Publication Date
30-Sep-2010
ICS
77.100 - Ferroalloys
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.18 - Castings
Current Stage
Ref Project

Relations

Replaces
ASTM A550-06 - Standard Specification for Ferrocolumbium
Effective Date
01-Oct-2010
Replaced By
ASTM A550-06(2015) - Standard Specification for Ferrocolumbium
Effective Date
15-Nov-2015
Referred By
ASTM E367-22 - Standard Test Methods for Chemical Analysis of Ferroniobium
Effective Date
01-Oct-2010
Referred By
ASTM A1025/A1025M-10(2020) - Standard Specification for Ferroalloys and Other Alloying Materials, General Requirements
Effective Date
01-Oct-2010

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ASTM A550-06(2010) - Standard Specification for Ferrocolumbium
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A550 −06(Reapproved 2010)
Standard Specification for
Ferrocolumbium
This standard is issued under the fixed designation A550; 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* 3. General Conditions for Delivery
1.1 This specification covers three grades of
3.1 Materialsfurnishedtothisspecificationshallconformto
ferrocolumbium,designatedLow-AlloySteelGrade,Alloyand
therequirementsofSpecificationA1025,includinganysupple-
Stainless Steel Grade, and High-Purity Grade.
mentary requirements that are indicated in the purchase order.
Failure to comply with the general requirements of Specifica-
1.2 The values stated in inch-pound units are to be regarded
tion A1025 constitutes nonconformance with this specification.
as standard. The values given in parentheses are mathematical
In case of conflict between the requirements of this specifica-
conversions to SI units that are provided for information only
tion and Specification A1025, this specification shall prevail.
and are not considered standard.
2. Referenced Documents
4. Chemical Composition
2.1 ASTM Standards:
4.1 The material shall conform to the requirements as to
A1025 Specification for Ferroalloys and Other Alloying
chemical composition specified in Tables 1 and 2. The manu-
Materials, General Requirements
facturer shall furnish an analysis of each shipment showing the
E11 Specification for Woven Wire Test Sieve Cloth and Test
percentage of each element specified in Table 1.
Sieves
4.2 For elements specified in Table 2 an analysis of each lot
is not required. Upon request of the purchaser, the manufac-
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
turer shall supply the results of an analysis for the elements
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
specified in Table 2 on a cumulative basis over a period
A01.18 on Castings.
Current edition approved Oct. 1, 2010. Published December 2010. Originally
mutually agreed upon by the manufacturer and the purchaser.
approved in 1965. Last previous edition approved in 2006 as A550 – 06. DOI:
10.1520/A0550-06R10.
5. Sizing
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
5.1 Ferrocolumbium is available in sizes and to tolerances
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. shown in Table 3.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A550−06(Reapproved 2010)
6. Keywords
6.1 columbium; ferrocolumbium; tantalum
A550−06 (2010)
TABLE 1 Chemical Requirements
Element Composition, %
Low-Alloy Steel Alloy and Stainless High-Purity
Grade Steel Grade Grade
A
Columbium 60.0–70.0 60.0–70.0 60.0–70.0
B
Tantalum, max 5.0 2.0 0.50
Carbon, max 0.5 0.3 0.10
Manganese, max 3.0 2.0 0.50
Silicon, max 4.0 2.5 0.40
C C D
Aluminum, max 3.0 2.0 2.0
T
...

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