ASTM A877/A877M-10

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Designation: A877/A877M – 10
Standard Specification 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. 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* loyed and Alloyed Steels.
1.1 This specification covers the highest quality of round
3. Ordering Information
and shaped chromium-silicon alloy steel valve spring wire,
3.1 It shall be the responsibility of the purchaser to specify
uniform in quality and temper, intended for the manufacture of
all requirements that are necessary for material under this
valve springs and other springs requiring high-fatigue proper-
specification. Such requirements are permitted to include, but
ties when used at moderately elevated temperatures. It is
are not limited to the following:
similar to the grade VD (referenced in EN 10270-2) intended
3.1.1 Quantity (mass),
for high fatigue levels.This wire shall be either in the annealed
3.1.2 Name of material (chromium-silicon alloy steel valve
and cold-drawn or quenched and tempered condition as speci-
spring quality wire),
fied by purchaser.
3.1.3 Dimensions (Table 1 and Section 8),
1.2 The values stated in either SI units or inch-pound units
3.1.4 Condition (Section 6),
are to be regarded separately as standard. The values stated in
3.1.5 Packaging (Section 14),
each system may not be exact equivalents; therefore, each
3.1.6 Heat analysis report, if requested (5.2),
system shall be used independently of the other. Combining
3.1.7 Certification or test report, or both, if specified (Sec-
values from the two systems may result in non-conformance
tion 13), and
with the standard.
3.1.8 ASTM designation and year of issue.
2. Referenced Documents
NOTE 1—A typical ordering description is as follows: 20 000-kg
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2.1 ASTM Standards:
quenched and tempered chromium-silicon alloy steel valve spring quality
A370 Test Methods and Definitions for Mechanical Testing wire, size 6.00 mm in 150-kg coils to A877/A877M dated ___, or for
inch-pound units, 40 000-lb quenched and tempered chromium-silicon
of Steel Products
alloy steel valve spring quality wire, size 0.250 in. in 350-lb coils to
A700 PracticesforPackaging,Marking,andLoadingMeth-
A877/A877M dated ___ .
ods for Steel Products for Shipment
A751 Test Methods, Practices, andTerminology for Chemi-
4. Materials and Manufacture
cal Analysis of Steel Products
4.1 The steel may be made by any commercially accepted
E29 Practice for Using Significant Digits in Test Data to
steel making process. The steel shall be continuously cast.
Determine Conformance with Specifications
4.2 The finished wire shall be free from detrimental pipe
E45 Test Methods for Determining the Inclusion Content of
and undue segregation.
Steel
2.2 European Standard:
5. Chemical Composition
EN 10270-2 Steel Wire for Mechanical Springs Part 2:
5.1 Thesteelshallconformtotherequirementsforchemical
Oil-Hardened and Tempered Springsteel Wire of Unal-
composition specified in Table 2.
5.2 Heat Analysis—Each heat of steel shall be analyzed by
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the manufacturer to determine the percentage of elements
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee prescribed in Table 2. This analysis shall be made from a test
A01.03 on Steel Rod and Wire.
specimen preferably taken during the pouring of the heat.
Current edition approved Oct. 1, 2010. Published November 2010. Originally
When requested, this shall be reported to the purchaser and
approved in 1987. Last previous edition approved in 2005 as A877/A877M – 05.
shall conform to the requirements of Table 2.
DOI: 10.1520/A0877_A0877M-10.
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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
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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.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
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A877/A877M – 10
A A
TABLE 1 Permissible Variations in Wire Diameter TABLE 3 Tensile and %RA Requirements
(Chrome Silicon)
SI Units
SI Units
Diameter, mm Permissible Varia- Permissible Out-of
Diameter, MPa, MPa, Min
tions, 6mm Round, mm
B
mm min max % R.A.
0.5 t
...