ASTM A550-06

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 the standard.

General Information

• Status: Historical
• Publication Date: 30-Jun-2006
• ICS: 77.100 - Ferroalloys
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaces: ASTM A550-78(2000) - Standard Specification for Ferrocolumbium
• Effective Date: 01-Jul-2006
• Replaced By: ASTM A550-06(2010) - Standard Specification for Ferrocolumbium
• 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-Jul-2006
• Referred By: ASTM E367-22 - Standard Test Methods for Chemical Analysis of Ferroniobium
• Effective Date: 01-Jul-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Standard Specification for
1
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.
TABLE 1 Chemical Requirements
1. Scope*
Element Composition, %
1.1 This specification covers three grades of ferrocolum-
Low-Alloy Steel Alloy and Stainless High-Purity
bium, designated Low-Alloy Steel Grade, Alloy and Stainless
Grade Steel Grade Grade
Steel Grade, and High-Purity Grade.
A
Columbium 60.0–70.0 60.0–70.0 60.0–70.0
1.2 The values stated in inch-pound units are to be regarded
B
Tantalum, max 5.0 2.0 0.50
as the standard.
Carbon, max 0.5 0.3 0.10
Manganese, max 3.0 2.0 0.50
2. Referenced Documents Silicon, max 4.0 2.5 0.40
C C D
Aluminum, max 3.0 2.0 2.0
2
2.1 ASTM Standards:
Tin, max 0.25 0.15 0.02
Phosphorus, max 0.10 0.05 0.02
A1025 Specification for Ferroalloys and Other Alloying
Sulfur, max 0.10 0.05 0.02
Materials, General Requirements
A
the columbium content of any shipment shall be reported to the nearest 0.1 %.
E11 SpecificationforWovenWireTestSieveClothandTest
B
Or 0.25 % maximum as agreed between purchaser and seller.
Sieves
C
Or 1.50 % maximum as agreed between purchaser and seller.
D
Or 1.0 maximum as agreed between purchaser and seller.
3. General Conditions for Delivery
3.1 Materialsfurnishedtothisspecificationshallconformto
turer shall supply the results of an analysis for the elements
therequirementsofSpecificationA1025,includinganysupple-
specified in Table 2 on a cumulative basis over a period
mentary requirements that are indicated in the purchase order.
mutually agreed upon by the manufacturer and the purchaser.
Failure to comply with the general requirements of Specifica-
tionA1025 constitutes nonconformance with this specification.
5. Sizing
In case of conflict between the requirements of this specifica-
5.1 Ferrocolumbium is available in sizes and to tolerances
tion and Specification A1025, this specification shall prevail.
shown in Table 3.
4. Chemical Composition
6. Keywords
4.1 The material shall conform to the requirements as to
6.1 columbium; ferrocolumbium; tantalum
chemical composition specified in Tables 1 and 2. The manu-
facturer shall furnish an analysis of each shipment showing the
TABLE 2 Supplemental Chemical Requirements
percentage of each element specified in Table 1.
A
4.2 For elements specified in Table 2 an analysis of each lot
NOTE—These are maximum limits allowable unless otherwise stated.
is not required. Upon request of the purchaser, the manufac-
A
Element Composition, %
Low-Alloy Alloy and Stainless High-Purity
Steel Grade Steel Grade Grade
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee Chromium 1.00 1.00 0.10
Tungsten 1.00 0.5 0.05
A 01.18 on Castings.
Titanium 1.00 1.0 0.10
Current edition approved July 1, 2006. Published July 2006. Originally approved
Le
...

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.
Designation: A 550 – 06
Standard Specification for
1
Ferrocolumbium
This standard is issued under the fixed designation A 550; 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 (e) indicates an editorial change since the last revision or reapproval.
1. 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 the standard.
2. Referenced Documents
2
2.1 ASTM Standards:
A 1025 Specification for Ferroalloys and Other Alloying Materials, General Requirements
E 11 Specification for Wire Cloth and Sieves for Testing Purposes
3. General Conditions for Delivery
3.1 Materials furnished to this specification shall conform to the requirements of Specification A 1025, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
Specification A 1025 constitutes nonconformance with this specification. In case of conflict between the requirements of this
specification and Specification A 1025, this specification shall prevail.
4. Chemical Composition
4.1 The material shall conform to the requirements as to chemical composition specified in Tables 1 and 2. The manufacturer
shall furnish an analysis of each shipment showing the percentage of each element specified in Table 1.
4.2 For elements specified in Table 2 an analysis of each lot is not required. Upon request of the purchaser, the manufacturer
shall supply the results of an analysis for the elements specified in Table 2 on a cumulative basis over a period mutually agreed
upon by the manufacturer and the purchaser.
5. Sizing
5.1 Ferrocolumbium is available in sizes and to tolerances shown in Table 3.
6. Keywords
6.1 columbium; ferrocolumbium; tantalum
1
ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteel,andRelatedAlloysandisthedirectresponsibilityofSubcommitteeA 01.18
on Castings.
Current edition approved July 1, 2006. Published July 2006. Originally approved in 1965. Last previous edition approved in 2000 as A 550 – 78 (2000).
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*ASummary 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.
1

---------------------- Page: 1 ----------------------
A 550–06
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 0.5
...