ASTM A416/A416M-10

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
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:A416/A416M–06 Designation: A416/A416M – 10
Standard Specification for
Steel Strand, Uncoated Seven-Wire for Prestressed
1
Concrete
This standard is issued under the fixed designationA416/A416M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber 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*
1.1 This specification covers two types and two grades of seven-wire, uncoated steel strand for use in pretensioned and
post-tensioned prestressed concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-
relaxation). Low-relaxation strand shall be regarded as the standard type. Stress-relieved (normal-relaxation) strand will not be
furnished unless specifically ordered, or by arrangement between purchaser and supplier. Grade 1725 [250] and Grade 1860 [270]
have minimum ultimate strengths of 1725 MPa [250 ksi] and 1860 MPa [270 ksi], respectively, based on the nominal area of the
strand.
1.2 The values stated in either inch-pound units or SI units are to be regarded 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
independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.3 ThesupplementaryrequirementsinS1shallbespecifiedfor15.2-mm[0.600-in.]diameteruncoatedseven-wiresteelstrand
if needed for applications in prestressed ground anchors.
2. Referenced Documents
2
2.1 ASTM Standards:
A370Test Methods and Definitions for Mechanical Testing of Steel Products
A981 Test Method for Evaluating Bond Strength for 15.2 mm (0.6 in.) Diameter Prestressing Steel Strand, Grade 270,
Uncoated, Used in Prestressed Ground Anchors
E328Test Methods for Stress Relaxation for Materials and Structures
1
ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.05
on Steel Reinforcement.
Current edition approvedApril 1, 2006.2010. PublishedApril 2006.July 2010. Originally approved in 1957. Last previous edition approved in 20052006 asA416–056.
DOI: 10.1520/A0416_A0416M-106.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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.
1

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A416/A416M – 10
A1061/A1061M Test Methods for Testing Multi-Wire Steel Strand
2

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A416/A416M – 10
3
2.2 U.S. Military Standards:
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
3
2.3 U.S. Federal Standard:
3
Fed. Std. No. 123 Marking for Shipments (Civil Agencies) Fed.Std.No.123 Marking for Shipments (Civil Agencies)
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 strand, n—a group of wires having a center wire enclosed tightly by six helically placed outer wires with uniform pitch
of not less than 12 and not more than 16 times the nominal diameter of the strand.
3.1.1.1 Discussion—The direction of lay may be either right- or left-hand, however, strands of different lays should not be
spliced together.
4. Ordering Information
4.1 Ordersforseven-wirelow-relaxationorstress-relieved(normal-relaxation)strandunderthisspecificationshouldincludethe
following information:
4.1.1Quantity (meters [feet]),
4.1.1 Quantity (metres [feet]),
4.1.2 Diameter of strand,
4.1.3 Grade of strand,
4.1.4 Type of strand,
4.1.5 Packaging,
4.1.6 ASTM designation and year of issue, and
4.1.7 Special requirements, if any.
NOTE 1—A typical ordering description is as follows: 25600 m [84000 ft], 13 mm [0.5 in.], Grade 1860 [270] low-relaxation strand, in 3600-m
[12000-ft] reelless packs to ASTM A416/A416M–_________.
5. Materials and Manufacture
5.1 Base Metal—The base metal shall be carbon steel of such quality that when drawn to wire, fabricated into strand, and then
thermally tre
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
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:A416/A416M–06 Designation: A416/A416M – 10
Standard Specification for
Steel Strand, Uncoated Seven-Wire for Prestressed
1
Concrete
This standard is issued under the fixed designationA416/A416M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber 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*
1.1 This specification covers two types and two grades of seven-wire, uncoated steel strand for use in pretensioned and
post-tensioned prestressed concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-
relaxation). Low-relaxation strand shall be regarded as the standard type. Stress-relieved (normal-relaxation) strand will not be
furnished unless specifically ordered, or by arrangement between purchaser and supplier. Grade 1725 [250] and Grade 1860 [270]
have minimum ultimate strengths of 1725 MPa [250 ksi] and 1860 MPa [270 ksi], respectively, based on the nominal area of the
strand.
1.2 The values stated in either inch-pound units or SI units are to be regarded 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
independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.3 ThesupplementaryrequirementsinS1shallbespecifiedfor15.2-mm[0.600-in.]diameteruncoatedseven-wiresteelstrand
if needed for applications in prestressed ground anchors.
2. Referenced Documents
2
2.1 ASTM Standards:
A370Test Methods and Definitions for Mechanical Testing of Steel Products
A981 Test Method for Evaluating Bond Strength for 15.2 mm (0.6 in.) Diameter Prestressing Steel Strand, Grade 270,
Uncoated, Used in Prestressed Ground Anchors
E328Test Methods for Stress Relaxation for Materials and Structures
1
ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.05
on Steel Reinforcement.
Current edition approvedApril 1, 2006.2010. PublishedApril 2006.July 2010. Originally approved in 1957. Last previous edition approved in 20052006 asA416–056.
DOI: 10.1520/A0416_A0416M-106.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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.
1

---------------------- Page: 1 ----------------------
A416/A416M – 10
A1061/A1061M Test Methods for Testing Multi-Wire Steel Strand
2

---------------------- Page: 2 ----------------------
A416/A416M – 10
3
2.2 U.S. Military Standards:
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
3
2.3 U.S. Federal Standard:
3
Fed. Std. No. 123 Marking for Shipments (Civil Agencies) Fed.Std.No.123 Marking for Shipments (Civil Agencies)
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 strand, n—a group of wires having a center wire enclosed tightly by six helically placed outer wires with uniform pitch
of not less than 12 and not more than 16 times the nominal diameter of the strand.
3.1.1.1 Discussion—The direction of lay may be either right- or left-hand, however, strands of different lays should not be
spliced together.
4. Ordering Information
4.1 Ordersforseven-wirelow-relaxationorstress-relieved(normal-relaxation)strandunderthisspecificationshouldincludethe
following information:
4.1.1Quantity (meters [feet]),
4.1.1 Quantity (metres [feet]),
4.1.2 Diameter of strand,
4.1.3 Grade of strand,
4.1.4 Type of strand,
4.1.5 Packaging,
4.1.6 ASTM designation and year of issue, and
4.1.7 Special requirements, if any.
NOTE 1—A typical ordering description is as follows: 25600 m [84000 ft], 13 mm [0.5 in.], Grade 1860 [270] low-relaxation strand, in 3600-m
[12000-ft] reelless packs to ASTM A416/A416M–_________.
5. Materials and Manufacture
5.1 Base Metal—The base metal shall be carbon steel of such quality that when drawn to wire, fabricated into strand, and then
thermally tre
...