ASTM B1011/B1011M-22

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B1011/B1011M − 19 B1011/B1011M − 22
Standard Specification for
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Cobalt Alloy Spring Wire
This standard is issued under the fixed designation B1011/B1011M; 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.
1. Scope
1.1 This specification covers cold-drawn cobalt alloy spring wire intended especially for the manufacture of springs.
1.1.1 This specification requires capability properties after age hardening test samples of the cold worked spring wire to ensure
final mechanical properties are satisfied. The spring is typically age hardened after fabrication to increase its strength. However,
mechanical properties cannot be obtained from finished springs.
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.
1.3 Unless the order specifies an “M” designation, the material shall be furnished to inch-pound units.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
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2.1 ASTM Standards:
B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys
E8E8/E8M Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M
E18 Test Methods for Rockwell Hardness of Metallic Materials
E92 Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials
E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and
Cobalt Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
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2.2 SAE Standard:
J 1086 Numbering Metals and Alloys
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This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.07 on Refined
Nickel and Cobalt and Their Alloys.
Current edition approved Nov. 1, 2019April 1, 2022. Published December 2019April 2022. Originally approved in 2019. Last previous edition approved in 2019 as
B1011/B1011M – 19. DOI: 10.1520/B1011_B1011M-19.10.1520/B1011_B1011M-22.
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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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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B1011/B1011M − 22
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2.2 NACE International Standard:
NACE MR0175/ISO 15156 Petroleum and natural gas industries—Materials for use in H2S-containing environments in oil and
gas production
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2.3 SAE Standard:
J 1086 Numbering Metals and Alloys
3. Ordering Information
3.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this
specification. Such requirements may include, but are not limited to the following:
3.1.1 Quantity (weight or number of pieces),
3.1.2 Name of material,
3.1.3 Melt method (see 5.1),
3.1.4 Finish (see 5.4),
3.1.5 Dimension(s) with tolerance(s),
3.1.6 UNS designation (Table 1),
3.1.7 ASTM designation and date of issue,
3.1.8 Special requirements and any supplementary requirements (such as S1 for NACE MR0175/ISO 15156 service), and
3.1.9 Packaging (see 5.5).
NOTE 1—A typical ordering description is as follows:
2000 lb [900 kg] Cobalt Alloy Spring Wire, cold-drawn and stearate coated, 0.032-in. [0.82 mm] diameter, in 100-lb [45 kg] 16-in. [0.4 m] coils, UNS
R30035, to ASTM B1011/B1011M, dated ____.
NOTE 1—A typical ordering description is as follows:
2000 lb [900 kg] Cobalt Alloy Spring Wire, cold-drawn and stearate coated, 0.032-in. [0.82 mm] diameter, in 100-lb [45 kg] 16-in. [0.4 m] coils, UNS
R30035, to ASTM B1011/B1011M, dated ____.
4. General Requirements for Delivery
...