ASTM A786/A786M-15(2021)

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:A786/A786M −15 (Reapproved 2021)
Standard Specification for
Hot-Rolled Carbon, Low-Alloy, High-Strength Low-Alloy, and
Alloy Steel Floor Plates
This standard is issued under the fixed designationA786/A786M; 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.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification covers carbon, low-alloy, high-
strength low-alloy, and alloy steel hot-rolled floor plates for A6/A6M Specification for General Requirements for Rolled
Structural Steel Bars, Plates, Shapes, and Sheet Piling
flooring, stairways, transportation equipment, and general
structural purposes. While it is generally provided in the A36/A36M Specification for Carbon Structural Steel
as-rolled condition, floor plate also may be provided in the A131/A131M Specification for Structural Steel for Ships
heat-treated condition, depending on the material specification. A242/A242M Specification for High-Strength Low-Alloy
Rolled floor plates have raised figures at regular intervals on Structural Steel
one surface of the plate. A514/A514M Specification for High-Yield-Strength,
Quenched and Tempered Alloy Steel Plate, Suitable for
1.2 Floor plate is available in dimensions that meet the
Welding
classification size limits for sheet, heavy thickness sheet coil,
A568/A568M Specification for Steel, Sheet, Carbon,
or plate. Maximum thickness for product delivered under this
Structural,andHigh-Strength,Low-Alloy,Hot-Rolledand
specification is 1 in. [25 mm].
Cold-Rolled, General Requirements for
1.3 When the steel is to be welded, it is presupposed that a
A572/A572M Specification for High-Strength Low-Alloy
welding procedure suitable for the grade of steel and intended
Columbium-Vanadium Structural Steel
use or service will be utilized. See Appendix X3 of Specifica-
A573/A573M Specification for Structural Carbon Steel
tion A6/A6M for information on weldability.
Plates
A588/A588M Specification for High-Strength Low-Alloy
1.4 The values stated in either inch-pound units or SI units
Structural Steel, up to 50 ksi [345 MPa] Minimum Yield
are to be regarded separately as standard. The values stated in
Point, with Atmospheric Corrosion Resistance
each system are not necessarily exact equivalents; therefore, to
A606/A606M Specification for Steel, Sheet and Strip, High-
ensure conformance with the standard, each system shall be
Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with
used independently of the other, and the values from the two
Improved Atmospheric Corrosion Resistance
systems shall not be combined.
A635/A635M Specification for Steel, Sheet and Strip,
1.5 This international standard was developed in accor-
Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon,
dance with internationally recognized principles on standard-
Structural, High-Strength Low-Alloy, and High-Strength
ization established in the Decision on Principles for the
Low-Alloy with Improved Formability, General Require-
Development of International Standards, Guides and Recom-
ments for
mendations issued by the World Trade Organization Technical
A659/A659M Specification for Commercial Steel (CS),
Barriers to Trade (TBT) Committee.
Sheet and Strip, Carbon (0.16 Maximum to 0.25 Maxi-
mum Percent), Hot-Rolled
A709/A709M Specification for Structural Steel for Bridges
This specification is under the jurisdiction ofASTM 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, 2021. Published September 2021. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1981. Last previous edition approved in 2015 as A786/A786M – 15. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0786_A0786M-15R21. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A786/A786M−15 (2021)
A829/A829M Specification forAlloy Structural Steel Plates 6. General Requirements
A830/A830M Specification for Plates, Carbon Steel, Struc-
6.1 Except as otherwise specified, product furnished under
tural Quality, Furnished to Chemical Composition Re-
this specification as plate shall conform to the applicable
quirements
requirements of Specification A6/A6M.
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
6.2 Except as otherwise specified, product furnished under
Alloys, and Ferroalloys
this specification as sheet shall conform to the applicable
A1011/A1011M Specification for Steel, Sheet and Strip,
requirements of Specification A568/A568M.
Hot-Rolled, Carbon, Structural, High-Strength Low-
Alloy, High-Strength Low-Alloy with Improved
6.3 Except as otherwise specified, product furnished under
Formability, and Ultra-High Strength this specification as heavy-thickness coil shall conform to the
A1018/A1018M Specification for Steel, Sheet and Strip,
applicable requirements of Specification A635/A635M.
Heavy-Thickness Coils, Hot-Rolled, Carbon,
6.4 In case of any conflict in requirements with this speci-
Commercial, Drawing, Structural, High-Strength Low-
fication and a referenced material specification, the require-
Alloy, High-Strength Low-Alloy with Improved
ments of this specification shall prevail.
Formability, and Ultra-High Strength
7. Material
3. Terminology
7.1 ASTM specifications that are currently available for
3.1 Definitions—For definitions of terms used in this floor plate production include, but are not limited to, the
specification, refer to Terminology A941.
following specifications: A36/A36M, A131/A131M, A242/
A242M, A514/A514M, A572/A572M, A573/A573M, A588/
4. Surface Pattern A588M, A606/A606M, A659/A659M, A709/A709M, A829/
A829M,A830/A830M,A1011/A1011M,andA1018/A1018M.
4.1 Individual floor plate patterns are unique to each manu-
facturer and are not identical in dimension or appearance to
8. Manufacture
patterns manufactured by other manufacturers, although there
8.1 The steel shall be made by any process that conforms to
may be a close resemblance.Typical patterns are shown in Fig.
the requirements of the material specification specified in the
1. Manufacturers generally produce only one of the patterns
purchase order (see 5.1.3), if any.
shown.
4.2 Pattern size and shape are not addressed in this specifi- 9. Chemical Composition Limits
cation due to the differences in individual manufacturer’s
9.1 Specified to Chemical Composition Limits Only—The
patterns and production methods. Where a need for these
heat analysis shall conform to the chemical limits specified in
attributes exists, purchasers should consult the manufacturer.
the purchase order.
4.3 Minimum pattern height shall be 0.020 in. [0.5 mm] for
9.2 Specified to an ASTM Specification—The heat analysis
material with a base thickness equal to or greater than 0.070 in.
shall conform to the chemical requirements listed in the
[1.8 mm]. The minimum pattern height shall be 0.015 in. [0.4
applicable specification.
mm] for material with a base thickness less than 0.070 in. [1.8
9.3 Where specified in the purchase order, product analyses
mm].
shall be performed at the frequency specified in the purchase
order, and such analyses shall conform to the applicable
5. Ordering Information
specified limits for heat analysis, subject to the permitted
5.1 Information items to be considered, if appropriate, for
variations in product analysis in Specification A6/A6M.
inclusion in purchase orders are as follows:
9.4 If copper-bearing is specified in the purchase order, the
5.1.1 Quantity (weight [mass] or number of pieces),
material shall contain at least 0.20 % copper, by heat analysis.
5.1.2 ASTM designation and year of issue,
5.1.3 Chemical composition limits or ASTM material des-
10. Tensile Properties
ignation and grade (if applicable) and year of issue (if neither
10.1 The material as represented by the test specimen shall
is specified, the product will be supplied 0.33 % maximum
conform to the requirements for yield point or yield strength,
carbon, by heat analysis, and without specified mechanical
and tensile strength in the ordered specification. The tension
properties).
test shall be conducted on specimens with the raised figures
5.1.4 Dimensions (decimal thickness, width, and either cut
present.Thickness is measured at a position between the raised
length of plate or coil size and weight [mass] requirements as
figures in an area unaffected by the pattern.
applicable),
5.1.5 Condition, if other than as-rolled, 10.2 Percent elongation, and reduction of area where
5.1.6 Product form (plate, sheet, or coil) and pattern from applicable, are not required for rolled floor plate.
Fig.1.Asindicatedin4.2,ifspecificpatternattributes,orsome
11. Permitted Variations
alternative pattern, are desired, the purchaser will need to
consult with the manufacturer, 11.1 For plates and sheets, the permitted variations in
5.1.7 Product analysis (see 9.3), dimensions shall be as given in Tables 1-3, Fig. 3, Table 4, Fig.
5.1.8 Copper-bearing steel, if required (see 9.4). 4, Table 5, Fig. 5, and Table 6 [Tables A1.1 toA1.6], inclusive.
A786/A786M−15 (2021)
FIG. 1 Floor Plate Patterns (Full Scale)
12. Certification 13. Keywords
12.1 Test Reports—Test reports shall be furnished as re-
13.1 alloy; carbon; floor plate; flooring; high-strength low-
quired by Specifications A6/A6M, A568/A568M,or A635/
alloy; pattern; raised figures; stairways; steel; structural steel;
A635M as applicable, and shall include theASTM designation
transportation equipment
and year of issue of this specification and the ASTM product
standard, if applicable.
12.2 Identification—Identification markings shall indicate
the designation (year of issue not required) of this specification
and the ASTM product standard, if applicable.
A786/A786M−15 (2021)
FIG. 2
FIG. 3 Camber for Raised Figures for Floor Plates (see Table 4 or TableA1.3)
A786/A786M−15 (2021)
FIG. 4 Camber for Rectangular Sheared Floor Plates and Gas-Cut Floor Plates (see Table 5 or TableA1.4)
TABLE 1 Permitted Variations in Thickness for Floor Plates
3 3
NOTE 1—Thickness to be measured at ⁄8 to ⁄4 in. from the longitudinal edge.
NOTE 2—For thickness measured at any location other than that specified in Note 1, the permitted variations over specified thickness shall be 1 ⁄4 times
the amounts in this table, rounded to the nearest 0.010 in. for sheets, and to the nearest 0.01 in. for plates.
NOTE 3—Where “. . .” appears in this table, there is no requirement.
Permitted Variation Over and Under Specified Permitted
...