ASTM A770/A770M-03(2012)e1

Standard Specification for Through-Thickness Tension Testing of Steel Plates for Special Applications

ABSTRACT
This specification covers procedures and acceptance standards for the determination of reduction of area using steel plates as tension test specimen. The tension testing method shall provide a measure of the resistance of a steel plate to lamellar tearing. Alternative test specimen may be used in place of the standard test specimen. Several types of test specimen shall have specified values of plate thickness, diameter, minimum radius, and length of reduced section.
SCOPE
1.1 This specification2 covers the procedures and acceptance standards for the determination of reduction of area using a tension test specimen whose axis is perpendicular to the rolled surfaces of steel plates 1 in. [25 mm] and greater in thickness. The principal purpose of the testing is to provide a measure of the resistance of a steel plate to lamellar tearing. (See Appendix X1.)  
1.2 The values stated in either inch-pound units or SI units are to be regarded 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 must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.3 This specification is expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.

General Information

• Status: Historical
• Publication Date: 29-Feb-2012
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.11 - Steel Plates for Boilers and Pressure Vessels

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
´1
Designation: A770/A770M −03 (Reapproved 2012)
Standard Specification for
Through-Thickness Tension Testing of Steel Plates for
Special Applications
This standard is issued under the fixed designationA770/A770M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
ε NOTE—Table 2 was corrected editorially in October 2016.
1. Scope 3.1.1 Supplementary requirements that are available to meet
2 end use requirements (see S1 through S5).
1.1 This specification covers the procedures and accep-
3.1.2 Special requirements agreed upon between the manu-
tancestandardsforthedeterminationofreductionofareausing
facturer and the purchaser.
a tension test specimen whose axis is perpendicular to the
rolled surfaces of steel plates 1 in. [25 mm] and greater in
4. Tension Tests
thickness. The principal purpose of the testing is to provide a
measure of the resistance of a steel plate to lamellar tearing.
4.1 Number of Tests:
(See Appendix X1.)
4.1.1 Two tests shall be required from each plate-as-rolled,
except for plates subjected to heat treatment by quenching and
1.2 The values stated in either inch-pound units or SI units
tempering. Two tests shall be required from each quenched-
are to be regarded as standard. Within the text, the SI units are
and-tempered plate. The tests shall be representative of the
shown in brackets. The values stated in each system are not
plate in its final condition.
exact equivalents; therefore, each system must be used inde-
4.1.2 When plates are furnished by the manufacturer in an
pendentlyoftheother.Combiningvaluesfromthetwosystems
unheat-treated condition and qualified by heat-treated speci-
may result in nonconformance with the specification.
mens (including normalized, normalized and tempered, and
1.3 This specification is expressed in both inch-pound and
quenched and tempered), two tests shall be required from each
SI units. However, unless the order specifies the applicable
plate-as-rolled.
“M” specification designation (SI units), the material shall be
furnished to inch-pound units. NOTE 1—The term “plate-as-rolled” refers to the unit plate rolled from
a slab or directly from an ingot. It does not refer to the condition of the
plate.
2. Referenced Documents
4.2 LocationofTestCoupons—Take one test coupon at each
2.1 ASTM Standards:
end of each plate as defined in 4.1. Take the test coupons from
A370 Test Methods and Definitions for Mechanical Testing
the center of the plate width.
of Steel Products
4.3 OrientationofTestSpecimens—The longitudinal axis of
3. Ordering Information
thereducedsectionofthetestspecimensshallbeperpendicular
3.1 The inquiry and order shall include the following, if to the rolled surface of the plate.
required:
4.4 Preparation of Test Specimens:
4.4.1 Welded Prolongations—When required, join welded
prolongations to the surface(s) of the plate being tested. The
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
joining method used shall be one which results in a minimal
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels. heat-affected zone in the portion of the plate to be tested.
Current edition approved March 1, 2012. Published April 2012. Originally
Shielded metal arc, friction, stud, or electron-beam welding
approved in 1980. Last previous edition approved in 2007 as A770/
methods have proven to be suitable.
A770M – 03 (2007). DOI: 10.1520/A0770_A0770M-03R12E01.
4.4.2 Standard Test Specimens:
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
cation SA-770/SA-770M in Section II of that Code.
4.4.2.1 Threetypesofstandardroundtensiontestspecimens
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
are shown in Fig. 1 and Table 1. For Types 1 and 2 specimens,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
locate the center of the length of the reduced section at the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. approximate mid-point of the plate thickness. For Type 3
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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A770/A770M − 03 (2012)
NOTE 1—For Type 3 only one welded prolongation may be needed,
depending upon plate thickness.
FIG. 1 Standard Round Tension Test Specimens
TABLE 1 Schedule of Standard Test Specimens,
A
Inches [Millimetres]
Specimen Type
Plate thickness (t)1# t# 1 ⁄4 1< t#22< t
FIG. 2 Alternative Tension Test Specimens
Diameter (D) 0.350 [8.75] 0.500 [12.5] 0.500 [12.5]
1 3 3
Radius, minimum (R) ⁄4 [6] ⁄8 [10] ⁄8 [10]
3 1 1
Length of reduced section (A)1 ⁄4 [45] 2 ⁄4 [60] 2 ⁄4 [60]
in. [150 mm] in thickness, a series of two or more Type A or
A
See Test Methods and Definitions A370 (Fig. 5 for further details and Fig. 6 for
Type C specimens with reduced sections of 4 in. [100 mm] or
various types of ends).
less may be used to cover the full thickness of the plate. The
number of tests required will depend upon the thickness of the
plate being tested and the reduced section length selected.
specimens, locate the weld fusion line of one plate surface
4.4.3.2 For plates over 1 in. [25 mm] in thickness, a series
within ⁄4 in. [6 mm] of one end of the reduced section.
of button-head specimens shown in Fig. 2 and Table 2 may be
4.4.2.2 For plates from 1 in. [25 mm] to 1 ⁄4 in. [32 mm]
used. The test specimen type to be used, Type D, Type E, or
inclusive in thickness, use either the 0.350-in. [8.75-mm] Type
Type F, is determined by the nominal plate thickness as
1 specimen or the 0.500-in. [12.5-mm] Type 2 specimen.
described in Table 2.Aseries of two or moreType F specimens
4.4.2.3 For plates over 1 ⁄4 in. to 2 in. [50 mm] inclusive in
may be used to cover the full thickness of the plate. The length
thickness, use the 0.500-in. [12.5-mm] Type 2 specimen.
of the reduced section (A), as shown in Fig. 2 and specified in
4.4.2.4 For plates greater than 2 in. [50 mm] in thickness,
Table 2, is the length of the reduced section excluding the
use the Type 3 specimen.
machined radius (R). Within the plate thickness dimension
4.4.3 Alternative Test Specimens—The alternative test
specified for each test specimen type, either the button-head
specimens in Fig. 2 and Table 2 may be used in place of the
thickness, the reduced section length, or the machined radius
standard specimens in Fig. 1 and Table 1.
may be varied. In all cases, the minimum length of the reduced
4.4.3.1 For plates over 2 in. [50 mm] in thickness,TypeAor
section must be as specified in Table 2 to maintain a minimum
TypeBspecimensmaybeused.TheTypeAspecimenprovides
length to diameter ratio (see Appendix X2.2).
a reduced section length greater than the plate thickness. The
Type B specimen provides a reduced section length of 2 ⁄4 in.
5. Acceptance Standards
[57 mm] with its center at the mid-thickness of the plate. Over
a minimum plate thickness determined by the specimen end 5.1 Each tension test shall have a minimum reduction of
configuration, no welded prolongations may be needed for the area no less than 20 %. If the reduction of area of both tests is
Type B specimen. For plates over 4 ⁄4 in. [108 mm] in less than 20 %, no retest shall be permitted. If the reduction of
thickness, the Type C specimen may be used. For plates over 6 area of one of the two tests from a plate is less than 20 %, one
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A770/A770M − 03 (2012)
TABLE 2 Schedule of Alternative Test Specimens, Inches [Millimetres]
Specimen Type
A A B
A B C DE F
1 3 3 1 1
Plate thickness (t)2< t [50 < t]2 [25# t# 45] [45# t# 64]
C C C
Diameter (D) 0.500 [12.5] 0.500 [12.5] 0.500 [12.5] 0.250 [6.25] 0.350 [8.75] 0.500 [12.5]
± 0.005 [0.10] ± 0.007 [0.18] ± 0.010† [0.25]
3 3 1
Radius, min (R) ⁄8 [10] ⁄8 [10] ⁄16 [2] optional optional optional
1 1 1
Length of reduced t + ⁄4 min [t+6] 2 ⁄4 [60] t−1 ⁄2 [t − 38] 0.625 [16] 0.875 [22] 1.250 [32]
section, min(A)
† Editorially corrected.
A
See Test Methods and Definitions A370 (Fig. 5 for further details and Fig. 6 for various types of ends).
B
See Test Methods and Definitions A370 (Fig. 6, specimen 3 for further details).
C
The reduced section may have a gradual taper from the ends toward the center, with the ends not more than 1 % larger in diameter than the center (controlling
dimension).
retest of two additional specimens taken from a location 7. Keywords
adjacent to the specimen that failed may be made, and both of
7.1 lamellar tearing; special steel-making processes; steel
these additional specimens shall have a reduction of area of
plate; through-thickness tension testing
20 % or more.
5.2 Failures occurring in the prolongations, the weld, or in
the fusion line shall be considered as a “no-test,” and an
additional specimen shall be tested.
6. Marking
6.1 Plates accepted in accordance with this specification
shall be identified by stamping or stenciling ZT adjacent to the
marking required by the applicable product specification.
SUPPLEMENTARY REQUIREMENTS
These requirements apply only when specified by the purchaser.
S1. Tensile Strength Requirements S4. Number of
...

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.
´1
Designation: A770/A770M − 03 (Reapproved 2012) A770/A770M − 03 (Reapproved 2012)
Standard Specification for
Through-Thickness Tension Testing of Steel Plates for
Special Applications
This standard is issued under the fixed designation A770/A770M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
ε NOTE—Table 2 was corrected editorially in October 2016.
1. Scope
1.1 This specification covers the procedures and acceptance standards for the determination of reduction of area using a tension
test specimen whose axis is perpendicular to the rolled surfaces of steel plates 1 in. [25 mm] and greater in thickness. The principal
purpose of the testing is to provide a measure of the resistance of a steel plate to lamellar tearing. (See Appendix X1.)
1.2 The values stated in either inch-pound units or SI units are to be regarded 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 must be used independently of the
other. Combining values from the two systems may result in nonconformance with the specification.
1.3 This specification is expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M”
specification designation (SI units), the material shall be furnished to inch-pound units.
2. Referenced Documents
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
3. Ordering Information
3.1 The inquiry and order shall include the following, if required:
3.1.1 Supplementary requirements that are available to meet end use requirements (see S1 through S5).
3.1.2 Special requirements agreed upon between the manufacturer and the purchaser.
4. Tension Tests
4.1 Number of Tests:
4.1.1 Two tests shall be required from each plate-as-rolled, except for plates subjected to heat treatment by quenching and
tempering. Two tests shall be required from each quenched-and-tempered plate. The tests shall be representative of the plate in its
final condition.
4.1.2 When plates are furnished by the manufacturer in an unheat-treated condition and qualified by heat-treated specimens
(including normalized, normalized and tempered, and quenched and tempered), two tests shall be required from each
plate-as-rolled.
NOTE 1—The term “plate-as-rolled’’“plate-as-rolled” refers to the unit plate rolled from a slab or directly from an ingot. It does not refer to the
condition of the plate.
4.2 Location of Test Coupons—Take one test coupon at each end of each plate as defined in 4.1. Take the test coupons from
the center of the plate width.
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.11
on Steel Plates for Boilers and Pressure Vessels.
Current edition approved March 1, 2012. Published April 2012. Originally approved in 1980. Last previous edition approved in 2007 as A770/A770M – 03 (2007). DOI:
10.1520/A0770_A0770M-03R12.10.1520/A0770_A0770M-03R12E01.
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-770/SA-770M in Section II of that Code.
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
´1
A770/A770M − 03 (2012)
4.3 Orientation of Test Specimens—The longitudinal axis of the reduced section of the test specimens shall be perpendicular to
the rolled surface of the plate.
4.4 Preparation of Test Specimens:
4.4.1 Welded Prolongations—When required, join welded prolongations to the surface(s) of the plate being tested. The joining
method used shall be one which results in a minimal heat-affected zone in the portion of the plate to be tested. Shielded metal arc,
friction, stud, or electron-beam welding methods have proven to be suitable.
4.4.2 Standard Test Specimens:
4.4.2.1 Three types of standard round tension test specimens are shown in Fig. 1 and Table 1. For Types 1 and 2 specimens,
locate the center of the length of the reduced section at the approximate mid-point of the plate thickness. For Type 3 specimens,
locate the weld fusion line of one plate surface within ⁄4 in. [6 mm] of one end of the reduced section.
4.4.2.2 For plates from 1 in. [25 mm] to 1 ⁄4 in. [32 mm] inclusive in thickness, use either the 0.350-in. [8.75-mm] Type 1
specimen or the 0.500-in. [12.5-mm] Type 2 specimen.
4.4.2.3 For plates over 1 ⁄4 in. to 2 in. [50 mm] inclusive in thickness, use the 0.500-in. [12.5-mm] Type 2 specimen.
4.4.2.4 For plates greater than 2 in. [50 mm] in thickness, use the Type 3 specimen.
4.4.3 Alternative Test Specimens—The alternative test specimens in Fig. 2 and Table 2 may be used in place of the standard
specimens in Fig. 1 and Table 1.
4.4.3.1 For plates over 2 in. [50 mm] in thickness, Type A or Type B specimens may be used. The Type A specimen provides
a reduced section length greater than the plate thickness. The Type B specimen provides a reduced section length of 2 ⁄4 in. [57
mm] with its center at the mid-thickness of the plate. Over a minimum plate thickness determined by the specimen end
configuration, no welded prolongations may be needed for the Type B specimen. For plates over 4 ⁄4 in. [108 mm] in thickness,
the Type C specimen may be used. For plates over 6 in. [150 mm] in thickness, a series of two or more Type A or Type C specimens
with reduced sections of 4 in. [100 mm] or less may be used to cover the full thickness of the plate. The number of tests required
will depend upon the thickness of the plate being tested and the reduced section length selected.
4.4.3.2 For plates over 1 in. [25 mm] in thickness, a series of button-head specimens shown in Fig. 2 and Table 2 may be used.
The test specimen type to be used, Type D, Type E, or Type F, is determined by the nominal plate thickness as described in Table
2. A series of two or more Type F specimens may be used to cover the full thickness of the plate. The length of the reduced section
(A), as shown in Fig. 2 and specified in Table 2, is the length of the reduced section excluding the machined radius (R). Within
the plate thickness dimension specified for each test specimen type, either the button-head thickness, the reduced section length,
or the machined radius may be varied. In all cases, the minimum length of the reduced section must be as specified in Table 2 to
maintain a minimum length to diameter ratio (see Appendix X2.2).
NOTE 1—For Type 3 only one welded prolongation may be needed, depending upon plate thickness.
FIG. 1 Standard Round Tension Test Specimens
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A770/A770M − 03 (2012)
TABLE 1 Schedule of Standard Test Specimens,
A
Inches [Millimetres]
Specimen Type
1 2 3
Plate thickness (t) 1 # t # 1 ⁄4 1 < t # 2 2 < t
Diameter (D) 0.350 [8.75] 0.500 [12.5] 0.500 [12.5]
1 3 3
Radius, minimum (R) ⁄4 [6] ⁄8 [10] ⁄8 [10]
3 1 1
Length of reduced section (A) 1 ⁄4 [45] 2 ⁄4 [60] 2 ⁄4 [60]
A
See Test Methods and Definitions A370 (Fig. 5 for further details and Fig. 6 for
various types of ends).
FIG. 2 Alternative Tension Test Specimens
5. Acceptance Standards
5.1 Each tension test shall have a minimum reduction of area no less than 20 %. If the reduction of area of both tests is less
than 20 %, no retest shall be permitted. If the reduction of area of one of the two tests from a plate is less than 20 %, one retest
of two additional specimens taken from a location adjacent to the specimen that failed may be made, and both of these additional
specimens shall have a reduction of area of 20 % or more.
5.2 Failures occurring in the prolongations, the weld, or in the fusion line shall be considered as a “no-test,” and an additional
specimen shall be tested.
6. Marking
6.1 Plates accepted in accordance with this specification shall be identified by stamping or stenciling ZT adjacent to the marking
required by the applicable product specification.
7. Keywords
7.1 lamellar tearing; special steel-making processes; steel plate; through-thickness tension testing
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A770/A770M − 03 (2012)
TABLE 2 Schedule of Alternative Test Specimens, Inches [Millimetres]
Specimen Type
A A B
A B C D E F
1 3 3 1 1
Plate thickness (t) 2 < t [50 < t] 2 [25 # t # 45] [45 # t # 64]
C C C
Diameter (D) 0.500 [12.5] 0.500 [12.5] 0.500 [12.5] 0.250 [6.25] 0.350 [8.75] 0.500 [12.5]
± 0.005 [0.10] ± 0.007 [0.18] ± 10.010 [0.25]
C C C
Diameter (D) 0.500 [12.5] 0.500 [12.5] 0.500 [12.5] 0.250 [6.25] 0.350 [8.75] 0.500 [12.5]
± 0.005 [0.10] ± 0.007 [0.18] ± 0.010† [0.25]
3 3 1
Radius, min (R) ⁄8 [10] ⁄8 [10] ⁄16 [2] optional optional optional
1 1 1
Length of reduced t + ⁄4 min [t + 6] 2 ⁄4 [60] t − 1 ⁄2 [t − 38] 0.625 [16] 0.875 [22] 1.250 [32]
section, min(A)
† Editorially corrected.
A
See Test Methods and Definitions A370 (Fig. 5 for further details and Fig. 6 for various types of ends).
B
See Test Methods and Definitions A370 (Fig. 6, specimen 3 for further details).
C
The
...