ASTM A1066/A1066M-11(2015)e2

Standard Specification for High-Strength Low-Alloy Structural Steel Plate Produced by Thermo-Mechanical Controlled Process (TMCP)

ABSTRACT
This specification covers high-strength low-alloy structural steel plates that were produced by the thermo-mechanical controlled process (TMCP). This method consists of rolling reductions and cooling rate controls, which result in mechanical properties in the finished plate that are equivalent to those attained using conventional rolling and heat treatment processes.
SCOPE
1.1 This specification covers steel plates produced by the thermo-mechanical controlled process (TMCP). Five grades are defined by the yield strength: 50 [345], 60 [415], 65 [450], 70 [485], and 80 [550]. The plates are intended primarily for use in welded steel structures.  
1.2 The TMCP method consists of rolling reductions and cooling rate controls that result in mechanical properties in the finished plate that are equivalent to those attained using conventional rolling and heat treatment processes, which entail reheating after rolling. A description of the TMCP method is given in Appendix X1.  
1.3 The maximum thicknesses available in the grades covered by this specification are shown in Table 1. (A) When Supplementary Requirement S75 is ordered the carbon content is 0.16 % max.(B) By agreement the steel may be produced with titanium, in which case the minimum aluminum content shall not apply. When this option is exercised, the titanium content, by heat analysis, shall be 0.006 % to 0.02 %, and the actual titanium content shall be reported on the test report.  
1.4 Due to the special combination of mechanical and thermal treatment inducing lower rolling temperatures than for conventional hot rolling the plates can not be formed at elevated temperatures without sustaining significant losses in strength and toughness. The plates may be formed and post-weld heat-treated at temperatures not exceeding 1050°F [560°C]. Higher temperatures may be possible if proven that minimum mechanical characteristics are retained after tests with specimens in the post-weld heat treatment (PWHT) condition. For flame straightening higher temperatures can be used in accordance with the steel manufacturer’s recommendations.  
1.5 If the steel is to be welded, a welding procedure suitable for the grade of steel and intended use or service is to be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.  
1.6 Supplementary requirements are available but shall apply only if specified in the purchase order.  
1.7 The values stated in either inch-pound-units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system is to be used independently of the other, without combining values in any way.  
1.8 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: Historical
• Publication Date: 31-Aug-2015
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.02 - Structural Steel for Bridges, Buildings, Rolling Stock and Ships

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
´2
Designation:A1066/A1066M −11 (Reapproved 2015)
Standard Specification for
High-Strength Low-Alloy Structural Steel Plate Produced by
Thermo-Mechanical Controlled Process (TMCP)
This standard is issued under the fixed designation A1066/A1066M; 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.
ε NOTE—Editorial corrections were made to Table 1 in September 2015.
ε NOTE—Editorial corrections were made throughout in November 2017.
1. Scope 1.7 The values stated in either inch-pound-units or SI units
are to be regarded separately as standard. Within the text, the
1.1 This specification covers steel plates produced by the
SI units are shown in brackets. The values stated in each
thermo-mechanical controlled process (TMCP). Five grades
system are not exact equivalents; therefore, each system is to
are defined by the yield strength: 50 [345], 60 [415], 65 [450],
be used independently of the other, without combining values
70 [485], and 80 [550]. The plates are intended primarily for
in any way.
use in welded steel structures.
1.8 This international standard was developed in accor-
1.2 The TMCP method consists of rolling reductions and
dance with internationally recognized principles on standard-
cooling rate controls that result in mechanical properties in the
ization established in the Decision on Principles for the
finished plate that are equivalent to those attained using
Development of International Standards, Guides and Recom-
conventional rolling and heat treatment processes, which entail
mendations issued by the World Trade Organization Technical
reheating after rolling. A description of the TMCP method is
Barriers to Trade (TBT) Committee.
given in Appendix X1.
1.3 The maximum thicknesses available in the grades cov-
2. Referenced Documents
ered by this specification are shown in Table 1.
2.1 ASTM Standards:
1.4 Due to the special combination of mechanical and
A6/A6M Specification for General Requirements for Rolled
thermal treatment inducing lower rolling temperatures than for
Structural Steel Bars, Plates, Shapes, and Sheet Piling
conventional hot rolling the plates can not be formed at
A673/A673M Specification for Sampling Procedure for Im-
elevated temperatures without sustaining significant losses in
pact Testing of Structural Steel
strength and toughness. The plates may be formed and post-
weld heat-treated at temperatures not exceeding 1050°F
3. General Requirements for Delivery
[560°C]. Higher temperatures may be possible if proven that
3.1 Material furnished under this specification shall con-
minimum mechanical characteristics are retained after tests
form to the applicable requirements of the current edition of
with specimens in the post-weld heat treatment (PWHT)
Specification A6/A6M.
condition. For flame straightening higher temperatures can be
used in accordance with the steel manufacturer’s recommen-
4. Materials and Manufacture
dations.
4.1 The steel shall be killed.
1.5 If the steel is to be welded, a welding procedure suitable
4.2 The plates shall be produced by the thermo-mechanical
for the grade of steel and intended use or service is to be
controlled process.
utilized. See Appendix X3 of Specification A6/A6M for
information on weldability.
5. Chemical Composition
1.6 Supplementary requirements are available but shall
5.1 The chemical composition on heat analysis shall con-
apply only if specified in the purchase order.
form to the requirements given in Table 1.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2015. Published September 2015. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 2011. Last previous edition approved in 2011 as A1066/A1066M – 11. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A1066_A1066M-11R15E02. the ASTM website.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
´2
A1066/A1066M−11 (2015)
TABLE 1 Chemical Requirements (Heat Analysis)
Content in [%]
Element
Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]
Max 4 in. Max 4 in. Max 3 in. Max 2 in. Max 1 in.
Thickness
[100 mm] [100 mm] [75 mm] [50 mm] [25 mm]
A
Carbon, max 0.14 0.16 0.16 0.16 0.16
Manganese 0.70–1.60 0.80–1.70 0.80–1.70 0.80–1.70 1.00–2.00
Phosphorus, max 0.030 0.030 0.030 0.030 0.030
Sulfur, max 0.020 0.020 0.020 0.020 0.020
Silicon 0.15–0.50 0.15–0.50 0.15–0.50 0.15–0.50 0.15–0.50
Copper, max 0.35 0.35 0.35 0.35 0.35
Nickel, max 0.30 0.70 0.70 0.70 0.70
Chromium, max 0.30 0.30 0.30 0.35 0.40
Molybdenum, max† 0.10 0.20 0.25 0.30 0.40
Columbium, max 0.05 0.05 0.05 0.05 0.10
Vanadium, max 0.08 0.08† 0.08 0.09 0.09
Aluminium, min 0.020 total or 0.020 total or 0.020 total or 0.020 total or 0.020 total or
B B B B B
0.015 soluble 0.015 soluble 0.015 soluble 0.015 soluble 0.015 soluble
Boron, max 0.002 0.002 0.002 0.002 0.002
† Editorially corrected.
A
When Supplementary Requirement S75 is ordered the carbon content is 0.16% max.
B
Byagreementthesteelmaybeproducedwithtitanium,inwhichcasetheminimumaluminumcontentshallnotapply.Whenthisoptionisexercised,thetitaniumcontent,
by heat analysis, shall be 0.006% to 0.02%, and the actual titanium content shall be reported on the test report.
TABLE 2 Maximum Carbon Equivalent (Heat Analysis)
Maximum Carbon Equivalent in [%]
Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]
Max 4 in. Max 4 in. Max 3 in. Max24in. Max 1 in.
Thickness
[100 mm] [100 mm] [75 mm] [50 mm] [25 mm]
CE 0.40 0.43 0.45 0.47 0.50
TABLE 3 Tensile Requirements
Yield Point, min Tensile Strength, min Elongation, min
Grade
ksi [MPa] ksi [MP
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
´2
Designation: A1066/A1066M − 11 (Reapproved 2015) A1066/A1066M − 11 (Reapproved
´2
2015)
Standard Specification for
High-Strength Low-Alloy Structural Steel Plate Produced by
Thermo-Mechanical Controlled Process (TMCP)
This standard is issued under the fixed designation A1066/A1066M; 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.
ε NOTE—Editorial corrections were made to Table 1 in September 2015.
ε NOTE—Editorial corrections were made throughout in November 2017.
1. Scope
1.1 This specification covers steel plates produced by the thermo-mechanical controlled process (TMCP). Five grades are
defined by the yield strength: 50 [345], 60 [415], 65 [450], 70 [485], and 80 [550]. The plates are intended primarily for use in
welded steel structures.
1.2 The TMCP method consists of rolling reductions and cooling rate controls that result in mechanical properties in the finished
plate that are equivalent to those attained using conventional rolling and heat treatment processes, which entail reheating after
rolling. A description of the TMCP method is given in Appendix X1.
1.3 The maximum thicknesses available in the grades covered by this specification are shown in Table 1.
1.4 Due to the special combination of mechanical and thermal treatment inducing lower rolling temperatures than for
conventional hot rolling the plates can not be formed at elevated temperatures without sustaining significant losses in strength and
toughness. The plates may be formed and post-weld heat-treated at temperatures not exceeding 1050°F [560°C]. Higher
temperatures may be possible if proven that minimum mechanical characteristics are retained after tests with specimens in the
post-weld heat treatment (PWHT) condition. For flame straightening higher temperatures can be used in accordance with the steel
manufacturer’s recommendations.
1.5 If the steel is to be welded, a welding procedure suitable for the grade of steel and intended use or service is to be utilized.
See Appendix X3 of Specification A6/A6M for information on weldability.
1.6 Supplementary requirements are available but shall apply only if specified in the purchase order.
1.7 The values stated in either inch-pound-units or SI units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system is to be used
independently of the other, without combining values in any way.
1.8 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
2.1 ASTM Standards:
A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A673/A673M Specification for Sampling Procedure for Impact Testing of Structural Steel
3. General Requirements for Delivery
3.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of
Specification A6/A6M.
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.02
on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.
Current edition approved Sept. 1, 2015. Published September 2015. Originally approved in 2011. Last previous edition approved in 2011 as A1066A1066/A1066M – 11.
DOI: 10.1520/A1066_A1066M-11R15E01.10.1520/A1066_A1066M-11R15E02.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´2
A1066/A1066M − 11 (2015)
TABLE 1 Chemical Requirements (Heat Analysis)
Content in [%]
Element
Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]
Max 4 in. Max 4 in. Max 3 in. Max 2 in. Max 1 in.
Thickness
[100 mm] [100 mm] [75 mm] [50 mm] [25 mm]
Content in [%]
Element
Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]
Max 4 in. Max 4 in. Max 3 in. Max 2 in. Max 1 in.
Thickness
[100 mm] [100 mm] [75 mm] [50 mm] [25 mm]
A
Carbon, max 0.14 0.16 0.16 0.16 0.16
Manganese 0.70–1.60 0.80–1.70 0.80–1.70 0.80–1.70 1.00–2.00
Phosphorus, max 0.030 0.030 0.030 0.030 0.030
Sulfur, max 0.020 0.020 0.020 0.020 0.020
Silicon 0.15–0.50 0.15–0.50 0.15–0.50 0.15–0.50 0.15–0.50
Copper, max 0.35 0.35 0.35 0.35 0.35
Nickel, max 0.30 0.70 0.70 0.70 0.70
Chromium, max 0.30 0.30 0.30 0.35 0.40
Molybdenum 0.10 0.20 0.25 0.30 0.40
Molybdenum, max† 0.10 0.20 0.25 0.30 0.40
Columbium, max 0.05 0.05 0.05 0.05 0.10
Vanadium, max 0.08 0.08† 0.08 0.09 0.09
Aluminium, min 0.020 total or 0.020 total or 0.020 total or 0.020 total or 0.020 total or
B B B B B
0.015 soluble 0.015 soluble 0.015 soluble 0.015 soluble 0.015 soluble
Boron, max 0.002 0.002 0.002 0.002 0.002
† Editorially corrected.
A
When Supplementary Requirement S75 is ordered the carbon content is 0.16 % max.
B
By agreement the steel may be produced with titanium, in which case the minimum aluminum content shall not apply. When this option is exercised, the titanium content,
by heat analysis, shall be 0.006 % to 0.02 %, and the actual titanium content shall be reported on the test report.
TABLE 2 Maximum Carbon Equivalent (Heat Analysis)
Maximum Carbon Equivalent in [%]
Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]
Max 4 in. Max 4 in. Max 3 in. Max 2 4 in. Max 1 in.
Thickness
[100 mm] [100 mm] [75 mm] [50 mm] [25 mm]
Maximum Carbon Equivalent in [%]
Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]
Max 4 in. Max 4 in. Max 3 in. Max 2 4 in. Max 1 in.
Thickness
[100 mm] [100 mm] [75 mm] [50 mm] [25 mm]
CE 0.40 0.43 0.45 0.47 0.50
TABLE 3 Tensile Requirements
Yield Point, min Tensile Strength, min Elongation, min
Grade
ksi [MPa] ksi [MP
...