ASTM A232/A232M-05

Standard Specification for Chromium-Vanadium Alloy Steel Valve Spring Quality Wire

ABSTRACT
This specification covers the highest quality of round chromium-vanadium alloy steel wires for manufacture of valve springs and other springs with high-fatigue properties under moderately elevated temperatures. The wires shall be annealed, cold-drawn, or oil-tempered. The material shall conform to specified carbon, manganese, phosphorus, sulfur, silicon, chromium, and vanadium contents. Guidelines for mechanical testing are given. Values for tensile requirements are provided. Material decarburization shall be examined. Attention is also given to workmanship, finish, and appearance of the product, and as well as its inspection, rejection, rehearing, and certification. Packaging, marking, and loading for shipment is also described.
SCOPE
1.1 This specification covers the highest quality of round chromium-vanadium 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 the 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.

General Information

• Status: Historical
• Publication Date: 28-Feb-2005
• 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 A232/A232M-99 - Standard Specification for Chromium-Vanadium Alloy Steel Valve Spring Quality Wire
• Effective Date: 01-Mar-2005
• Replaced By: ASTM A232/A232M-05(2011)e1 - Standard Specification for Chromium-Vanadium Alloy Steel Valve Spring Quality Wire
• Effective Date: 01-Jul-2011
• Referred By: ASTM A1000/A1000M-17(2023) - Standard Specification for Steel Wire, Carbon and Alloy Specialty Spring Quality
• Effective Date: 01-Mar-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A232/A232M – 05
Standard Specification for
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Chromium-Vanadium Alloy Steel Valve Spring Quality Wire
This standard is issued under the fixed designationA232/A232M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* MIL-STD-163 Steel Mill Products, Preparation for Ship-
ment and Storage
1.1 This specification covers the highest quality of round
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2.5 AIAG Standard:
chromium-vanadium alloy steel valve spring wire, uniform in
AIAG B-5 02.00 Primary Metals Identification Tag Appli-
quality and temper, intended for the manufacture of valve
cation Standard
springs and other springs requiring high-fatigue properties
whenusedatmoderatelyelevatedtemperatures.Thiswireshall
3. Ordering Information
be either in the annealed and cold-drawn or oil-tempered
3.1 Orders for material under this specification should
condition as specified by the purchaser.
include the following information for each ordered item:
1.2 The values stated in either SI units or inch-pound units
3.1.1 Quantity (mass),
are to be regarded separately as standard. Within the text, the
3.1.2 Name of material (chromium-vanadium alloy steel
inch-pound units are shown in brackets. The values stated in
valve spring quality wire),
each system are not exact equivalents; therefore, each system
3.1.3 Dimensions (Table 1 and Section 8),
must be used independent of the other.
3.1.4 Condition (Section 6),
2. Referenced Documents 3.1.5 Packaging (Section 14),
2
3.1.6 Heat analysis report, if requested (5.2),
2.1 ASTM Standards:
3.1.7 Certification or test report, or both, if specified (Sec-
A370 Test Methods and Definitions for Mechanical Testing
tion 13), and
of Steel Products
3.1.8 ASTM designation and year of issue.
A700 PracticesforPackaging,Marking,andLoadingMeth-
ods for Steel Products for Shipment
NOTE 1—A typical ordering description is as follows: 20 000 kg
A751 Test Methods, Practices, andTerminology for Chemi-
oil-tempered chromium-vanadium alloy steel valve spring quality wire,
size 6.00 mm in 150 kg coils to ASTM A232/A232M dated _______, or
cal Analysis of Steel Products
for inch-pound units, 40 000 lb oil-tempered chromium-vanadium alloy
E29 Practice for Using Significant Digits in Test Data to
steel valve spring quality wire, size 0.250 in. in 350-lb coils to ASTM
Determine Conformance with Specifications
A232/A232M dated ______.
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2.2 ANSI Standard:
B 32.4 Preferred Metric Sizes for Round, Square, Rect-
4. Materials and Manufacture
angle, and Hexagon Metal Products
4.1 The steel may be made by any commercially accepted
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2.3 Federal Standard:
steel making process. The steel shall be continuously cast.
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
4.2 The finished wire shall be free from detrimental pipe
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2.4 Military Standard:
and undue segregation.
5. Chemical Composition
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5.1 Thesteelshallconformtotherequirementsforchemical
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
composition specified in Table 2.
A1.03 on Steel Rod and Wire.
5.2 Heat Analysis—Each heat of steel shall be analyzed by
Current edition approved March 1, 2005. Published March 2005. Originally
approved in 1939. Last previous edition approved in 1999 as A232/A232M – 99.
the manufacturer to determine the percentage of elements
DOI: 10.1520/A0232_A0232M-05.
prescribed in Table 2. This analysis shall be made from a test
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specimen preferably taken during the pouring of the heat.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
When requested, this shall be reported to the purchaser and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
shall conform to the requirements of Table 2.
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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.
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A232/A232M – 05
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TABLE 1 Tensile Requirements
5.3 Product Analysis
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