Standard Specification for Steel Wire, Chromium-Silicon Alloy Valve Spring Quality

ABSTRACT
This specification covers the highest quality of round chromium-silicon alloy steel valve spring wires, uniform in quality and temper, intended for the manufacture of valve springs and other springs requiring high-fatigue properties when used at moderately elevated temperatures. This wire shall be either in the annealed and cold-drawn or oil-tempered condition. The steel may be made by any commercially accepted steel making process, shall be continuously cast, and shall be free from detrimental pipe and undue segregation and surface imperfections. Heat analysis, tensile testing, wrap testing, and surface inspection by magnetic or eddy current defect analysis shall be done. Both heat and product analysis shall conform to the chemical composition requirements specified for carbon, manganese, phosphorus, sulfur, silicon, and chromium. The mechanical requirements for the steel wire including cooling, heat treatment, and tensile strength, and the metallurgical requirements including etched surface testing, decarburization, and inclusion content are detailed.
SCOPE
1.1 This specification covers the highest quality of round chromium-silicon alloy steel valve spring wire, uniform in quality and temper, intended for the manufacture of valve springs and other springs requiring high-fatigue properties when used at moderately elevated temperatures. This wire shall be either in the annealed and cold-drawn or oil-tempered condition as specified by purchaser.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other.

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28-Feb-2005
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ASTM A877/A877M-05 - Standard Specification for Steel Wire, Chromium-Silicon Alloy Valve Spring Quality
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A877/A877M – 05
Standard Specification for
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Steel Wire, Chromium-Silicon Alloy Valve Spring Quality
This standard is issued under the fixed designationA877/A877M; 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.
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1. Scope* 2.4 AIAG Standard:
AIAG B-5 02.00 Primary Metals Identification Tag Appli-
1.1 This specification covers the highest quality of round
cation Standard
chromium-silicon alloy steel valve spring wire, uniform in
quality and temper, intended for the manufacture of valve
3. Ordering Information
springs and other springs requiring high-fatigue properties
3.1 Orders for material under this specification shall include
whenusedatmoderatelyelevatedtemperatures.Thiswireshall
the following information for each ordered item:
be either in the annealed and cold-drawn or oil-tempered
3.1.1 Quantity (mass),
condition as specified by purchaser.
3.1.2 Name of material (chromium-silicon alloy steel valve
1.2 The values stated in either SI units or inch-pound units
spring quality wire),
are to be regarded separately as standard. Within the text, the
3.1.3 Dimensions (Table 1 and Section 8),
inch-pound units are shown in brackets. The values stated in
3.1.4 Condition (Section 6),
each system are not exact equivalents; therefore, each system
3.1.5 Packaging (Section 14),
must be used independent of the other.
3.1.6 Heat analysis report, if requested (5.2),
2. Referenced Documents 3.1.7 Certification or test report, or both, if specified (Sec-
2
tion 13), and
2.1 ASTM Standards:
3.1.8 ASTM designation and year of issue.
A370 Test Methods and Definitions for Mechanical Testing
of Steel Products
NOTE 1—A typical ordering description is as follows: 20 000-kg
A700 PracticesforPackaging,Marking,andLoadingMeth-
oil-tempered chromium-silicon alloy steel valve spring quality wire, size
6.00 mm in 150-kg coils toASTM ___ dated ___, or for inch-pound units,
ods for Steel Products for Shipment
40 000-lb oil-tempered chromium-silicon alloy steel valve spring quality
A751 Test Methods, Practices, andTerminology for Chemi-
wire, size 0.250 in. in 350-lb coils to ASTM ___ dated ___ .
cal Analysis of Steel Products
E29 Practice for Using Significant Digits in Test Data to
4. Materials and Manufacture
Determine Conformance with Specifications
4.1 The steel may be made by any commercially accepted
E45 Test Methods for Determining the Inclusion Content of
steel making process. The steel shall be continuously cast.
Steel
4.2 The finished wire shall be free from detrimental pipe
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2.2 Federal Standard:
and undue segregation.
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
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2.3 Military Standard:
5. Chemical Composition
MIL-STD-163 Steel Mill Products, Preparation for Ship-
5.1 Thesteelshallconformtotherequirementsforchemical
ment and Storage
composition specified in Table 2.
5.2 Heat Analysis—Each heat of steel shall be analyzed by
the manufacturer to determine the percentage of elements
prescribed in Table 2. This analysis shall be made from a test
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, specimen preferably taken during the pouring of the heat.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
When requested, this shall be reported to the purchaser and
A01.03 on Steel Rod and Wire.
shall conform to the requirements of Table 2.
Current edition approved March 1, 2005. Published March 2005. Originally
5.3 Product Analysis—An analysis may be made by the
approved in 1987. Last previous edition approved in 1999 as A877/A877M – 99.
DOI: 10.1520/A0877_A0877M-05.
purchaser from finished wire representing each heat of steel.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
The average of all the separate determinations made shall be
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.
3 4
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Available fromAutomotive IndustryAction Group (AIAG), 26200 Lahser Rd.,
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098 Suite 200, Southfield, MI 48034.
*A Summary of Changes section appears at the end of this standard.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
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A877/A877M – 05
A A
TABLE 1 Permissible Variations in Wire Diameter TABLE 3 Tensile Requirements
SI Units
SI Units
Diameter, MPa, MPa, Min
B
Diameter, mm Permiss
...

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