ASTM A877/A877M-10e1

Standard Specification for Steel Wire, Chromium-Silicon Alloy, Chrome-Silicon-Vanadium 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 and shaped 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. It is similar to the grade VD (referenced in EN 10270-2) intended for high fatigue levels. This wire shall be either in the annealed and cold-drawn or quenched and 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. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

General Information

• Status: Historical
• Publication Date: 30-Sep-2010
• ICS: 77.140.25 - Spring steels
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.03 - Steel Rod and Wire

Relations

• Replaces: ASTM A877/A877M-10 - Standard Specification for Steel Wire, Chromium-Silicon Alloy, Chrome-Silicon-Vanadium Alloy Valve Spring Quality
• Effective Date: 01-Oct-2010
• Replaced By: ASTM A877/A877M-16 - Standard Specification for Steel Wire, Chromium-Silicon Alloys, Chrome-Silicon-Vanadium Alloy Valve Spring Quality
• Effective Date: 01-May-2016
• Referred By: ASTM A401/A401M-18 - Standard Specification for Steel Wire, Chromium-Silicon Alloy
• Effective Date: 01-Oct-2010
• Referred By: ASTM A1000/A1000M-17(2023) - Standard Specification for Steel Wire, Carbon and Alloy Specialty Spring Quality
• Effective Date: 01-Oct-2010

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
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Designation:A877/A877M −10
StandardSpecification for
Steel Wire, Chromium-Silicon Alloy, Chrome-Silicon-
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Vanadium 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.Anumber 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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ε NOTE—Table 4 was editorially corrected in April 2012.
1. Scope* 2.2 European Standard:
EN 10270-2Steel Wire for Mechanical Springs Part 2:
1.1 This specification covers the highest quality of round
Oil-Hardened and Tempered Springsteel Wire of Unal-
and shaped chromium-silicon alloy steel valve spring wire,
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loyed and Alloyed Steels.
uniform in quality and temper, intended for the manufacture of
valve springs and other springs requiring high-fatigue proper-
3. Ordering Information
ties when used at moderately elevated temperatures. It is
3.1 It shall be the responsibility of the purchaser to specify
similar to the grade VD (referenced in EN 10270-2) intended
all requirements that are necessary for material under this
forhighfatiguelevels.Thiswireshallbeeitherintheannealed
specification. Such requirements are permitted to include, but
and cold-drawn or quenched and tempered condition as speci-
are not limited to the following:
fied by purchaser.
3.1.1 Quantity (mass),
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. The values stated in
3.1.3 Dimensions (Table 1 and Section 8),
each system may not be exact equivalents; therefore, each
3.1.4 Condition (Section 6),
system shall be used independently of the other. Combining
3.1.5 Packaging (Section 14),
values from the two systems may result in non-conformance
3.1.6 Heat analysis report, if requested (5.2),
with the standard.
3.1.7 Certification or test report, or both, if specified (Sec-
tion 13), and
2. Referenced Documents
3.1.8 ASTM designation and year of issue.
2
2.1 ASTM Standards:
NOTE 1—A typical ordering description is as follows: 20000-kg
A370Test Methods and Definitions for Mechanical Testing
quenched and tempered chromium-silicon alloy steel valve spring quality
of Steel Products
wire, size 6.00 mm in 150-kg coils to A877/A877M dated ___, or for
A700Guide for Packaging, Marking, and Loading Methods
inch-pound units, 40000-lb quenched and tempered chromium-silicon
alloy steel valve spring quality wire, size 0.250 in. in 350-lb coils to
for Steel Products for Shipment
A877/A877M dated ___.
A751Test Methods, Practices, and Terminology for Chemi-
cal Analysis of Steel Products
4. Materials and Manufacture
E29Practice for Using Significant Digits in Test Data to
4.1 The steel may be made by any commercially accepted
Determine Conformance with Specifications
steel making process. The steel shall be continuously cast.
E45Test Methods for Determining the Inclusion Content of
Steel
4.2 The finished wire shall be free from detrimental pipe
and undue segregation.
5. Chemical Composition
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This specification is under the jurisdiction ofASTM Committee A01 on Steel,
5.1 Thesteelshallconformtotherequirementsforchemical
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.03 on Steel Rod and Wire.
composition specified in Table 2.
Current edition approved Oct. 1, 2010. Published November 2010. Originally
5.2 Heat Analysis—Each heat of steel shall be analyzed by
approved in 1987. Last previous edition approved in 2005 as A877/A877M–05.
DOI: 10.1520/A0877_A0877M-10.
the manufacturer to determine the percentage of elements
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Available from European Committee for Standardization, rue di Stassart 36,
the ASTM website. B-1050 Brussels, Belgium.
*A Summary of Changes section appears at the end of this standard
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A877/A877M−10
A A
TABLE 1 Permissible Variations in Wire Diameter TABLE 3 Tensile and %RA Requirements
SI Units (Chrome Silicon)
Diameter, mm Permissible Varia- Permissible Out-of SI Units
tions, ±mm Round, mm
Diameter, MPa, MPa, Min
B
mm min max % R.A.
0.5 to 2.0, incl 0.02 0.02
Over 2.0 to 4.0, incl 0.03 0.03
0.5 2100 2280 β
Over 4.0 to 9.5, incl 0.04 0.04
1.0 2070 2240 β
Inch-Pound Units
1.5 2030 2210 β
Diameter, in. Permissible Varia- Permissibl
...