ASTM A401/A401M-03

Standard Specification for Steel Wire, Chromium-Silicon Alloy

ABSTRACT
This specification covers round chromium-silicon alloy steel spring wire having properties and quality intended for the manufacture of springs resistant to set when used at moderately elevated temperatures. This product is not meant to be used for high cycle fatigue applications. Either ingot or strand cast steel may be made by any commercially accepted steel making process. The steel shall conform on heat and product analysis to the chemical composition requirements prescribed for carbon, manganese, phosphorus, sulfur, silicon, and chromium. Annealed and cold drawn or oil-tempered wires shall conform to the specified mechanical properties including tensile strength. Requirements for tension and wrap tests as well as metallurgical requirements for etched surface testing and decarburization are detailed.
SCOPE
1.1 This specification covers round chromium-silicon alloy steel spring wire having properties and quality intended for the manufacture of springs resistant to set when used at moderately elevated temperatures. This product is not meant to be used for high cycle fatique applications (see Specification A 877/A 877M). This wire shall be provided 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: 09-Sep-2003
• ICS: 77.140.65 - Steel wire, wire ropes and link chains
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.03 - Steel Rod and Wire

Relations

• Replaces: ASTM A401/A401M-98 - Standard Specification for Steel Wire, Chromium-Silicon Alloy
• Effective Date: 10-Sep-2003
• Replaced By: ASTM A401/A401M-10 - Standard Specification for Steel Wire, Chromium-Silicon Alloy
• Effective Date: 01-May-2010
• Referred By: ASTM A1000/A1000M-17(2023) - Standard Specification for Steel Wire, Carbon and Alloy Specialty Spring Quality
• Effective Date: 10-Sep-2003

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A401/A401M – 03
Standard Specification for
1
Steel Wire, Chromium-Silicon Alloy
This standard is issued under the fixed designationA401/A401M; 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* Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
2.4 Military Standard:
1.1 This specification covers round chromium-silicon alloy
MIL-STD-163 Steel Mill Products, Preparation for Ship-
steel spring wire having properties and quality intended for the
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ment and Storage
manufactureofspringsresistanttosetwhenusedatmoderately
2.5 AIAG Standard:
elevated temperatures.This product is not meant to be used for
AIAG B-5 02.00 Primary Metals Identification Tag Appli-
high cycle fatique applications (see Specification A877/
7
cation Standard
A877M).Thiswireshallbeprovidedeitherintheannealedand
cold-drawn or oil-tempered condition as specified by the
3. Ordering Information
purchaser.
3.1 It shall be the responsibility of the purchaser to specify
1.2 The values stated in either SI units or inch-pound units
all requirements that are necessary for material under this
are to be regarded separately as standard. Within the text, the
specification. Such requirements may include, but are not
inch-pound units are shown in brackets. The values stated in
limited to, the following:
each system are not exact equivalents; therefore, each system
3.1.1 Quantity (mass),
must be used independent of the other.
3.1.2 Name of material (chromium-silicon alloy steel wire),
2. Referenced Documents 3.1.3 Dimensions (Table 1 and Section 8),
2
3.1.4 Condition (Section 6),
2.1 ASTM Standards:
3.1.5 Packaging (Section 14),
A370 Test Methods and Definitions for Mechanical Testing
3
3.1.6 Heat analysis report, if requested (5.2),
of Steel Products
3.1.7 Certification or test report, or both, if specified (Sec-
A700 PracticesforPackaging,Marking,andLoadingMeth-
2
tion 13), and
ods for Steel Products for Shipment
3.1.8 ASTM designation and year of issue.
A751 Test Methods, Practices, andTerminology for Chemi-
2
cal Analysis of Steel Products
NOTE 1—A typical ordering description is as follows: 20 000-kg,
A752 Specification for General Requirements for Wire
oil-tempered chromium-silicon alloy steel wire, size 6.00 mm in 150 kg
2
coils to ASTM A401/A401Mdated ____, or for inch-pound units,
Rods and Coarse Round Wire, Alloy Steel
40 000-lb oil-tempered chromium-silicon alloy steel spring wire, size
A877/A877M Specification for Steel Wire, Chromium-
4 0.250 in. in 350-lb coils to ASTM A401/A401Mdated ____.
Silicon Alloy Valve Spring Quality
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
2.2 ANSI Standard:
steel making process. The steel may be either ingot cast or
B 32.4 Preferred Metric Sizes for Round, Square, Rectangle
strand cast.
5
and Hexagon Metal Products
4.2 The finished wire shall be free from detrimental pipe
2.3 Federal Standards:
and undue segregation.
1 5. Chemical Composition
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
5.1 The steel shall conform to the requirements of Grade
A01.03 on Steel Rod and Wire.
9254 for chemical composition specified in Table 2.
Current edition approved Sept. 10, 2003. Published Sept. 2003. Originally
approved in 1956. Last previous edition approved in 1998 as A401/A401M – 98.
DOI: 10.1520/A0401_A0401M-03.
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Annual Book of ASTM Standards, Vol 01.03.
3 6
Annual Book of ASTM Standards, Vol 01.05. AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
4
Annual Book of ASTM Standards, Vol 14.02. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
5 7
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., Available fromAutomotive IndustryAction Group (AIAG), 26200 Lahser Rd.,
4th Floor, New York, NY 10036. 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, PA 19428-2959, United States.
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A401/A401M – 03
A
TABLE 1 Tensile Requirements TABLE 2 Chemical Requirements
SI Units
UNS Designation G9254 Grade No. 9254
B
Diameter, Reduction of Ranges and Limits, %
MPa, min MPa, max
mm Area, min, %
Phosphorus, Sulfur,
Carbon Manganese Silicon Chromium
C
0.80 2080 2260 max max
C
0.90 2070 2250
0.51–0.59 0.60–0.80 0.035 0.040 1.20–1.60 0.60–0.8
...