ASTM A1114/A1114M-20

Standard Specification for Low-Relaxation, Seven-Wire, Grade 240 [1655], Stainless Steel Strand for Prestressed Concrete

SCOPE
1.1 This specification covers low-relaxation, seven-wire, Grade 240 [1655], stainless steel strand for use in prestressed concrete construction. Grade 240 [1655] has a minimum tensile strength of 240 ksi [1655 MPa] based on the nominal area of the strand.  
1.2 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables) shall not be considered as requirements of the specification.  
1.3 This specification is applicable for orders in either inch-pound units (as Specification A1114) or in SI units (as Specification A1114M).  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with this specification, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 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.

General Information

• Status: Published
• Publication Date: 29-Feb-2020
• ICS: 77.140.15 - Steels for reinforcement of concrete
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.05 - Steel Reinforcement

Relations

• Refers: ASTM A1061/A1061M-20 - Standard Test Methods for Testing Multi-Wire Steel Prestressing Strand
• Effective Date: 01-May-2020

Standards Content (Sample)

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.
Designation:A1114/A1114M −20
Standard Specification for
Low-Relaxation, Seven-Wire, Grade 240 [1655], Stainless
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Steel Strand for Prestressed Concrete
ThisstandardisissuedunderthefixeddesignationA1114/A1114M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This specification covers low-relaxation, seven-wire,
Grade 240 [1655], stainless steel strand for use in prestressed A1061/A1061M Test Methods for Testing Multi-Wire Steel
Prestressing Strand
concrete construction. Grade 240 [1655] has a minimum
tensile strength of 240 ksi [1655 MPa] based on the nominal A416/A416M Specification for Low-Relaxation, Seven-
Wire Steel Strand for Prestressed Concrete
area of the strand.
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2.2 U.S. Military Standard:
1.2 The text of this specification references notes and
MIL-STD-129 Marking for Shipment and Storage
footnotes which provide explanatory material. These notes and
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2.3 U.S. Federal Standard:
footnotes (excluding those in tables) shall not be considered as
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
requirements of the specification.
3. Terminology
1.3 This specification is applicable for orders in either
inch-pound units (as Specification A1114) or in SI units (as
3.1 Definitions of Terms Specific to This Specification:
Specification A1114M).
3.1.1 lay length, n—the axial distance required to make one
complete revolution of any outer wire of a strand.
1.4 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3.1.2 strand, n—a group of wires having a center wire
each system are not necessarily exact equivalents; therefore, to
enclosed tightly by six helically placed outer wires.
ensure conformance with this specification, each system shall
3.1.2.1 Discussion—The direction of lay is either right-
be used independently of the other, and values from the two
handed or left-handed.
systems shall not be combined.
3.1.3 strand splice, n—a production connection between
1.5 This standard does not purport to address all of the two separate lengths of strand that is not intended to resist
safety concerns, if any, associated with its use. It is the prestressing forces.
responsibility of the user of this standard to establish appro-
3.1.4 wire weld, n—a resistance butt-weld joining two
priate safety, health, and environmental practices and deter-
separate lengths of wire after wire drawing and before the wire
mine the applicability of regulatory limitations prior to use.
is formed into strand.
1.6 This international standard was developed in accor-
4. Ordering Information
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 Orders for low-relaxation, seven-wire, Grade 240
Development of International Standards, Guides and Recom-
[1655], stainless steel strand under this specification shall
mendations issued by the World Trade Organization Technical
contain the following information:
Barriers to Trade (TBT) Committee.
4.1.1 Quantity (feet [metres]),
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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This specification is under the jurisdiction ofASTM Committee A01 on Steel, contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
A01.05 on Steel Reinforcement. the ASTM website.
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Current edition approved March 1, 2020. Published March 2020. DOI: 10.1520/ Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
A1114_A1114M-20. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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A1114/A1114M−20
TABLE 1 Breaking Strength Requirements
from the thermal-mechanical treatment are considered normal
Minimum Weight [Mass] of for the finished appearance of this strand.
Nominal Diameter Steel Area of
Breaking Strength Strand,
of Strand, Strand,
of Strand, lb/1000 ft [kg/
2 2
6. Mechanical Property Requirements
in. [mm] in. [mm ]
lbf [kN] 1000 m]
6.1 Tests for mechanical properties shall be conducted in
Grade 240 [1655]
0.520 [13.2] 40 100 [179] 0.167 [108] 570 [840]
accordance with Test Methods A106
...