ASTM A877/A877M-99
(Specification)Standard Specification for Steel Wire, Chromium-Silicon Alloy Valve Spring Quality
Standard Specification for Steel Wire, Chromium-Silicon Alloy Valve Spring Quality
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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Designation: A 877/A877M – 99
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope AIAGB-5 02.00 Primary Metals Identification TagApplica-
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tion Standard
1.1 This specification covers the highest quality of round
chromium-silicon alloy steel valve spring wire, uniform in
3. Ordering Information
quality and temper, intended for the manufacture of valve
3.1 Orders for material under this specification shall include
springs and other springs requiring high-fatigue properties
the following information for each ordered item:
whenusedatmoderatelyelevatedtemperatures.Thiswireshall
3.1.1 Quantity (mass),
be either in the annealed and cold-drawn or oil-tempered
3.1.2 Name of material (chromium-silicon alloy steel valve
condition as specified by purchaser.
spring quality wire),
1.2 The values stated in either SI units or inch-pound units
3.1.3 Dimensions (Table 1 and Section 8),
are to be regarded separately as standard. Within the text, the
3.1.4 Condition (Section 6),
inch-pound units are shown in brackets. The values stated in
3.1.5 Packaging (Section 14),
each system are not exact equivalents; therefore, each system
3.1.6 Heat analysis report, if requested (5.2),
must be used independent of the other.
3.1.7 Certification or test report, or both, if specified (Sec-
2. Referenced Documents tion 13), and
3.1.8 ASTM designation and year of issue.
2.1 ASTM Standards:
A 370 Test Methods and Definitions for MechanicalTesting
NOTE 1—A typical ordering description is as follows: 20 000-kg
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of Steel Products oiltempered chromium-silicon alloy steel valve spring quality wire, size
6.00 mm in 150-kg coils toASTM ___ dated ___, or for inch-pound units,
A 700 Practices for Packaging, Marking, and Loading
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40 000-lb oil-tempered chromium-silicon alloy steel valve spring quality
Methods for Steel Products for Domestic Shipment
wire, size 0.250 in. in 350-lb coils to ASTM ___ dated ___ .
A 751 Test Methods, Practices, and Terminology for
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Chemical Analysis of Steel Products
4. Materials and Manufacture
E 29 Practice for Using Significant Digits in Test Data to
4.1 The steel may be made by any commercially accepted
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Determine Conformance with Specifications
steel making process. The steel may be either ingot cast or
E 45 Practice for Determining the Inclusion Content of
strand cast.
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Steel
4.2 The finished wire shall be free from detrimental pipe
2.2 Federal Standard:
and undue segregation.
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
2.3 Military Standard:
5. Chemical Composition
MIL-STD-163 Steel Mill Products, Preparation for Ship-
5.1 Thesteelshallconformtotherequirementsforchemical
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ment and Storage
composition specified in Table 2.
2.4 AIAG Standard:
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 A-1 on Steel,
specimen preferably taken during the pouring of the heat.
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
A01.03 on Steel Rod and Wire. When requested, this shall be reported to the purchaser and
Current edition approved March 10, 1999. Published May 1999. Originally
shall conform to the requirements of Table 2.
published as A 877/A 877M – 87. Last previous edition A 877/A 877M – 98.
5.3 Product Analysis—An analysis may be made by the
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Annual Book of ASTM Standards, Vol 01.03.
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purchaser from finished wire representing each heat of steel.
Annual Book of ASTM Standards, Vol 01.05.
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Annual Book of ASTM Standards, Vol 14.02.
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Annual Book of ASTM Standards, Vol 03.01.
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AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700 Available from the Automotive Industry Action Group, 26200 Lahser, Suite
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. 200, Southfield, MI 48034.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
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A 877/A877M – 99
A A
TABLE 1 Permissible Variations in Wire Diameter TABLE 3 Tensile Requirements
SI Units SI Units
Diameter, mm Permissible Varia- Permissible Out-of Diameter, mm MPa, min MPa, max
tions, 6mm Round, mm
0.5 2100 2280
0.5 to 2.0, incl 0.02 0.02 1.0 2070 2240
Over 2.0 to 4.0, incl 0.03 0.03 1.5 2030 2210
Over 4.0 to 9.5, incl 0.04 0.04 2.0 2000 2140
3.0 1930
...
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