ASTM F1267-18(2023)
(Specification)Standard Specification for Metal, Expanded, Steel
Standard Specification for Metal, Expanded, Steel
ABSTRACT
This specification covers expanded metal. Expanded metal shall be of the following types, classes, grades such as type I-expanded, type II-expanded and flattened, class I-uncoated, class2-hot-dip zinc uncoated, class 3-corrosion resisting steel, grade A and grade B. Expanded metal shall be made from commercial steel, carbon steel sheets or from stainless steel sheets. Expanded metal shall be manufactured with the corresponding thickness, design size, opening size and strand size. Each single strand test specimen shall be visually inspected, and that surface of the strand observed to have the most nearly uniform coating shall be the tension surface when the strand is subject to bending. The coating thickness shall be measured microscopically at a suitable magnification. The minimum and maximum coating thicknesses shall be measured on each of the four exposed surfaces, but not at the corners.
SCOPE
1.1 This specification covers expanded metal.
1.1.1 Expanded metal covered by this specification is intended for a variety of applications.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only and may be approximate.
1.3 The following precautionary caveat pertains only to the test methods portion, Section 11, of this specification. 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.
1.4 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
Relations
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: F1267 − 18 (Reapproved 2023)
Standard Specification for
Metal, Expanded, Steel
This standard is issued under the fixed designation F1267; 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 Stainless Steel Sheet, Strip, Plate, and Flat Bar
A700 Guide for Packaging, Marking, and Loading Methods
1.1 This specification covers expanded metal.
for Steel Products for Shipment
1.1.1 Expanded metal covered by this specification is in-
A1008/A1008M Specification for Steel, Sheet, Cold-Rolled,
tended for a variety of applications.
Carbon, Structural, High-Strength Low-Alloy, High-
1.2 The values stated in inch-pound units are to be regarded
Strength Low-Alloy with Improved Formability, Required
as the standard. The values given in parentheses are for
Hardness, Solution Hardened, and Bake Hardenable
information only and may be approximate.
A1011/A1011M Specification for Steel, Sheet and Strip,
1.3 The following precautionary caveat pertains only to the
Hot-Rolled, Carbon, Structural, High-Strength Low-
test methods portion, Section 11, of this specification. This Alloy, High-Strength Low-Alloy with Improved
standard does not purport to address all of the safety concerns,
Formability, and Ultra-High Strength
if any, associated with its use. It is the responsibility of the user
2.2 SAE Standard:
of this standard to establish appropriate safety, health, and
SAE J 1086 Numbering Metals and Alloys (Stabilized Oc-
environmental practices and determine the applicability of
tober 2012)
regulatory limitations prior to use.
2.3 Military Standards:
1.4 This international standard was developed in accor-
MIL-C-16173 Corrosion Preventive Compound, Solvent
dance with internationally recognized principles on standard-
Cutback, Cold-Application
ization established in the Decision on Principles for the
MIL-STD-105 Sampling Procedures and Tables for Inspec-
Development of International Standards, Guides and Recom-
tion by Attributes
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3. Terminology
2. Referenced Documents 3.1 Expanded Metal Terminology:
2 3.1.1 bond, n—the solid intersection of two strands.
2.1 ASTM Standards:
3.1.2 camber, n—the bow of a side or edge from end to end
A123/A123M Specification for Zinc (Hot-Dip Galvanized)
from a straight line.
Coatings on Iron and Steel Products
A240/A240M Specification for Chromium and Chromium-
3.1.3 diamonds, n—open area of metal after expanding.
Nickel Stainless Steel Plate, Sheet, and Strip for Pressure
Most expanded metal open area or patterns are uniform
Vessels and for General Applications
diamond shaped, but may also be hexagonal, louvered,
A653/A653M Specification for Steel Sheet, Zinc-Coated
asymmetric, square, or other shapes, or combinations thereof.
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)
3.1.4 edge configuration, n—refers to the edge condition of
by the Hot-Dip Process
a sheet may they be closed diamonds (bonded), or open
A666 Specification for Annealed or Cold-Worked Austenitic
diamonds (random) produced by shearing.
3.1.5 expanded metal, n—a rigid sheet of metal that is
1 simultaneously been slit and stretched creating an open dia-
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee
mond pattern.
A01.19 on Steel Sheet and Strip.
Current edition approved Sept. 1, 2023. Published September 2023. Originally
approved in 1989. Last previous edition approved in 2018 as F1267 – 18. DOI:
10.1520/F1267-18R23. Available from Society of Automotive Engineers (SAE), 400 Commonwealth
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Dr., Warrendale, PA 15096-0001, http://www.sae.org.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Manufacturers Standardization Society of the Valve and Fittings
Standards volume information, refer to the standard’s Document Summary page on Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
the ASTM website. hq.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1267 − 18 (2023)
3.1.6 flattened, v (F)—expanded metal that has been cold- 4.3.1 Class 1—Uncoated.
rolled after expansion. 4.3.2 Class 2—Hot-dip zinc-coated (galvanized or galva-
nnealed).
3.1.7 flattening, adv—the process of producing flattened
4.3.3 Class 3—Corrosion-resisting steel.
expanded metal.
4.4 Grade—Pertains only to post-galvanized or galva-
3.1.8 grating, n—expanded metal that is produced from
nnealed coating.
heavier sheet.
4.4.1 Grade A—0.0025 in. (0.06 mm) minimum coating
3.1.9 levelness, n—(flatness of sheet), sheets shall be free
thickness.
from waves or buckets that are in excess of 1 ⁄2 in. from a plane
4.4.2 Grade B—0.0012 in. (0.03 mm) minimum coating
surface.
thickness.
3.1.10 LWD, n—nominal dimension, Long Way of the
Diamond.
5. Ordering Information
3.1.11 LWO, n—Long Way of the Opening.
5.1 Orders for material under this specification shall include
3.1.12 regular-raised-standard, n—(R) expanded metal as it
the following information, as required, to describe the material
comes from the press. The strands and bonds are set at a
adequately:
uniform angle to the plane of the sheet.
5.1.1 ASTM designation,
5.1.2 Type, class, and grade of steel required (see 4.1),
3.1.13 SWD, n—nominal dimension, Short Way of the
5.1.3 Material required (see 6.1),
Diamond.
5.1.4 Direction of shear, if not as specified (see 6.2.1),
3.1.14 SWO, n—Short Way of the Opening.
5.1.5 Length, width, and thickness of uncoated mesh, and
3.1.15 shearing, n—cutting the sheet to a specific size or
weight per square ft uncoated (see Tables 1-6),
tolerance.
5.1.6 Size of sheet required, if other than sizes specified in
3.1.16 squareness, n—the dimensional variance a side and
7.1,
edge are out of square.
5.1.7 Whether or not sheets from which samples have been
selected for coating thickness test may be included as part of
3.1.17 strand thickness, n—thickness of the base metal
material shipped (see 10.1.2), and
3.1.18 strand thickness, n, and strand width, n—can be
5.1.8 Optional requirements, if any (see Supplementary
varied to create different expanded metal products for different
Requirements S1 through S3).
applications.
3.1.19 strand width, n—amount of material fed through top
6. Materials and Manufacture
and bottom dies to produce one strand.
6.1 Expanded metal shall be made from Commercial Steel
3.1.20 taper, n—edges of a sheet that deviates from parallel.
(CS Type B) carbon steel sheets as specified in Specifications
A1008/A1008M or A1011/A1011M or from stainless steel
4. Classification
sheets as specified in Specifications A240/A240M or A666.
4.1 Expanded metal shall be of the following types, classes,
6.2 Expanded metal shall be manufactured from sheet steel
and grades as specified (see 5.1.2).
in thicknesses corresponding to Tables 1-6 as specified (see
4.2 Type:
5.1.5).
4.2.1 Type I—Expanded (see Fig. 1).
6.2.1 Each opening shall be integral with adjoining open-
4.2.2 Type II—Expanded and flattened (see Fig. 2).
ings by means of unsheared bonds (see Fig. 1 and Fig. 2) of the
4.3 Class: original sheet.
FIG. 1 Type I, Expanded and Raised
F1267 − 18 (2023)
FIG. 2 Type II, Expanded and Flattened
A
TABLE 1 Carbon Steel Dimensions, Strand Sizes, and Weight for Type I (Raised), Class 1 Metal
Minimum Opening Size
C
Nominal Overall
Design Size (in.) Strand Size (in.) Diamond per ft
C
Strand Percent
(in.)
Style Weight Thickness
Thickness Open Area
B C
C
per CSF (in.)
D
SWD LWD SWO LWO Width Thickness SWD LWD
(in.)
⁄4 20 0.032 85 0.250 1.000 0.157 0.718 0.072 0.036 0.146 48 12 42 %
⁄4 18 0.042 113 0.250 1.000 0.146 0.718 0.072 0.048 0.151 48 12 42 %
⁄2 20 0.032 42 0.500 1.200 0.407 0.938 0.072 0.036 0.146 24 10 71 %
⁄2 18 0.042 69 0.500 1.200 0.382 0.938 0.088 0.048 0.180 24 10 65 %
⁄2 16 0.053 85 0.500 1.200 0.372 0.938 0.087 0.060 0.183 24 10 65 %
⁄2 13 0.083 141 0.500 1.200 0.337 0.938 0.096 0.090 0.212 24 10 62 %
⁄4 16 0.053 54 0.923 2.000 0.783 1.750 0.101 0.060 0.208 13 6 78 %
⁄4 13 0.083 77 0.923 2.000 0.760 1.688 0.096 0.090 0.212 13 6 79 %
⁄4 10 0.083 117 0.923 2.000 0.718 1.625 0.144 0.092 0.300 13 6 69 %
⁄4 9 0.127 178 0.923 2.000 0.675 1.562 0.150 0.134 0.329 13 6 67 %
1 16 0.053 43 1.000 2.400 0.872 2.062 0.087 0.060 0.183 12 5 83 %
1 ⁄2 18 0.042 20 1.330 3.000 1.229 2.625 0.068 0.048 0.144 9 4 90 %
1 ⁄2 16 0.053 40 1.330 3.000 1.184 2.625 0.108 0.060 0.221 9 4 84 %
1 ⁄2 13 0.083 58 1.330 3.000 1.160 2.500 0.105 0.090 0.228 9 4 84 %
1 ⁄2 10 0.083 76 1.330 3.000 1.132 2.500 0.138 0.090 0.288 9 4 79 %
1 ⁄2 9 0.127 119 1.330 3.000 1.087 2.375 0.144 0.134 0.318 9 4 78 %
1 ⁄2 6 0.184 247 1.330 3.000 0.979 2.313 0.203 0.198 0.452 9 4 69 %
2 10 0.083 65 1.850 4.000 1.630 3.438 0.164 0.090 0.335 7 3 82 %
2 9 0.127 88 1.850 4.000 1.603 3.375 0.149 0.134 0.327 7 3 84 %
A
1 lb = 0.454 kg; 1 in. = 25.4 m.
B
A variation in weight per square ft of ±10 % is permissible, based on the weight of any sheet or bundle. No combination of tolerances can be combined to yield weight
per SF below -10 % tolerance range; the minimum weight per SF of -10 % is absolute.
C
A tolerance of ±10 % is permitted in dimensions, except for minimum strand thickness.
D
The minimum thickness is absolute, not subject to minus variation.
7. Dimensions, Mass, and Permissible Variations 7.2 Types I and II expanded metal shall be furnished in
accordance with the weights and dimensions as specified in
7.1 Unless otherwise specified (see 5.1.6), Type I expanded
Tables 1-6, respectively.
metal shall be furnished in sheets 4 ft (1.2 m) wide by 8 ft
(2.4 m) long, and Type II, flattened, expanded metal shall be
7.3 Tolerances for Type I (raised expanded metal) sheets:
furnished in sheets 4 ft (1.2 m) wide by 8 ft (2.4 m) long.
F1267 − 18 (2023)
A
TABLE 2 Grating—Carbon Steel Dimensions, Strand Sizes, and Weight for Type I (Raised), Class I Metal
C C
Design Size in. Opening Size in. Strand Size in.
Nominal Overall
Diamond per ft
Style Weight per Thickness Percent Open Area
B SWD LWD SWO LWO Width Thickness
CSF (in.)
SWD LWD
2.0 lb 2.00 1.33 5.33 1.000 3.60 0.235 0.135 0.460 9.0 2.25 77 %
3.0 lb 3.00 1.33 5.33 0.940 3.44 0.264 0.183 0.540 9.0 2.25 60 %
3.14 lb 3.14 2.00 6.00 1.625 4.88 0.312 0.250 0.656 6.0 2.00 69 %
4.0 lb 4.00 1.33 5.33 0.940 3.44 0.300 0.215 0.618 9.0 2.25 55 %
4.27 lb 4.27 1.41 4.00 1.000 2.88 0.300 0.250 0.625 8.5 3.00 58 %
5.0 lb 5.00 1.33 5.33 0.813 3.38 0.331 0.250 0.655 9.0 2.25 50 %
6.25 lb 6.25 1.41 5.33 0.813 3.38 0.350 0.312 0.715 8.5 2.25 50 %
7.0 lb 7.00 1.41 5.33 0.813 3.38 0.391 0.318 0.740 8.5 2.25 45 %
A
1 in. = 25.4 mm; 1 lb = 0.454 kg.
B
A variation in weight per square ft of ±5 % is permissible, based on the weight of any sheet or bundle. No combination of tolerances can be combined to yield weight
per SF below -5 % tolerance range; the minimum weight per SF of 5 % is absolute.
C
A tolerance of ±5 % is permitted in dimensions, center to center.
A
TABLE 3 Grating—Stainless Steel Dimensions, Strand Sizes, and Weights for Type 1 (Raised), Class 1 Metal
C C
Nominal
Design Size, in. Opening Size, in. Strand Size, in. Diamond per ft
Overall
Style Weight per Percent Open Area
Thickness (in.)
B
SWD LWD SWO LWO Width Thickness SWD LWD
CSF
3.3 lb. 3.32 2.00 6.0 1.625 4.880 0.312 0.250 0.656 6 2 69 %
4.5 lb. 4.25 1.41 4.0 1.000 2.880 0.300 0.250 0.625 8.5 3 58 %
A
1 in. = 25.4 mm; 1 lb = 0.454 kg.
B
A variation in weight per square ft of ±5 % is permissible, based on the weight of any sheet or bundle. No combination of tolerances can be combined to yield weight
per SF below -5 % tolerance range; the minimum weight per SF of 5 % is absolute.
C
A tolerance of ±5 % is permitted in dimensions, center to center.
A
TABLE 4 Carbon Steel Dimensions, Strand Sizes, and Weight for Type II (Flattened), Class 1 Metal
Design Size Opening Size
Minimum Nominal Overall Percent
Strand Size (in.) Diamond per ft
C C
(in.) (in.)
Style Thickness Weight Thickness Open
D B
(in.) per CSF (in.) Area
SWD LWD SWO LWO Width Thickness SWD LWD
⁄4 20 0.026 74 0.250 1.050 0.092 0.715 0.079 0.029 0.029 48 11.4 37 %
⁄4 18 0.034 100 0.250 1.050 0.090 0.715 0.080 0.038 0.038 48 11.4 36 %
⁄2 20 0.026 37 500 1.260 0.342 1.000 0.079 0.029 0.029 24 9.5 68 %
⁄2 18 0.034 61 0.500 1.260 0.306 1.000 0.097 0.038 0.038 24 9.5 61 %
⁄2 16 0.043 77 0.500 1.260 0.304 1.000 0.098 0.048 0.048 24 9.5 61 %
⁄2 13 0.066 126 0.500 1.260 0.286 1.000 0.107 0.072 0.072 24 9.5 57 %
⁄4 16 0.043 47 0.923 2.100 0.701 1.750 0.111 0.048 0.048 13 5.7 76 %
⁄4 14 0.054 56 0.923 2.100 0.713 1.760 0.105 0.060 0.060 13 5.7 77 %
⁄4 13 0.066 67 0.923 2.100 0.711 1.781 0.106 0.072 0.072 13 5.7 77 %
⁄4 10 0.066 102 0.923 2.100 0.603 1.755 0.160 0.072 0.072 13 5.7 65 %
⁄4 9 0.101 157 0.923 2.100 0.593 1.688 0.165 0.108 0.108 13 5.7 64 %
1 16 0.043 38 1.000 2.520 0.804 2.250 0.098 0.048 0.048 12 4.8 80 %
1 ⁄2 16 0.043 35 1.330 3.150 1.092 2.750 0.119 0.048 0.048 9 3.8 82 %
1 ⁄2 14 0.054 43 1.330 3.150 1.098 2.750 0.116 0.060 0.060 9 3.8 83 %
1 ⁄2 13 0.066 51 1.330 3.150 1.098 2.750 0.116 0.072 0.072 9 3.8 83 %
1 ⁄2 9 0.101 105 1.330 3.150 1.014 2.563 0.158 0.108 0.108 9 3.8 76 %
A
1 lb = 0.454 kg; 1 in. = 25.4 mm.
B
A variation in weight per square ft of ±10 % is permissible, based on the weight of any sheet or bundle. No combination of tolerances can be combined to yield weight
per SF below -10 % tolerance range; the minimum weight per SF of -10 % is absolute.
C
A tolerance of ±10 % is permitted in dimensions, except for thickness.
D
The minimum thickness is absolute, not subject to minus variation.
7.3.1 Strand width shall not vary in excess of 610 % of the 7.3.4 Camber shall not exceed ⁄32 in. per ft of dimension.
nominal width. 1
7.3.5 Taper shall not exceed ⁄16 in. per ft of dimension, or
7.3.2 Sheet width shall not exceed ⁄4 in. per ft of SWD 1
⁄4 in. overall.
dimension. (Example: factory run stock sheet 48 in. could be
7.3.6 Squareness of ends of sheets shall not exceed ⁄8 in. per
49 in. wid
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