1、Designation: A929/A929M 01 (Reapproved 2013)Standard Specification forSteel Sheet, Metallic-Coated by the Hot-Dip Process forCorrugated Steel Pipe1This standard is issued under the fixed designation A929/A929M; the number immediately following the designation indicates the yearof original adoption o
2、r, 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.1. Scope1.1 This specification covers steel sheet used in the manu-facture of corrugated s
3、teel pipe for storm sewers, culverts,drains, and similar uses. The sheet is metallic coated by thehot-dip process. Material for this use is furnished in coils, flatin cut lengths, and corrugated in cut lengths. Many metalliccoated materials are covered in this material specification.Users must deter
4、mine which product best serves their needs.Five different metallic coatings are included:1.1.1 Zinc-coated (galvanized),1.1.2 Zinc-5 % aluminum-Mischmetal (Zn-5Al-MM) alloycoated,1.1.3 55 % aluminum-zinc (55Al-Zn) alloy coated,1.1.4 Aluminum-coated Type 2 (aluminized Type 2), and1.1.5 Aluminum-coate
5、d Type 1 (aluminized Type 1).1.2 Zinc-coated sheet is available in two coating weightsmasses. Other metallic coatings are available in one coatingweight mass only.1.3 The values stated in either inch-pound units or SI unitsare to be regarded separately as the standard. Within the text,the SI units a
6、re shown in brackets. The values stated in eachsystem are not equivalents; therefore, each system must beused independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weig
7、ht Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA428/A428M Test Method for Weight Mass of Coating onAluminum-Coated Iron or Steel ArticlesA902 Terminology Relating to Metallic Coated Steel Prod-uctsA924/A924M Specification for General Requirements forSteel Sheet, Metalli
8、c-Coated by the Hot-Dip ProcessB750 Specification for GALFAN (Zinc-5 % Aluminum-Mischmetal) Alloy in Ingot Form for Hot-Dip CoatingsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3. Terminology3.1 Definitions:3.1.1 For definitions of terms used in t
9、his specification, referto Terminology A902. The following definitions are as stated inthat terminology:3.1.2 fabricator, n as related to corrugated metal pipe,(1)the organization that produces the finished pipe; or (2) forstructural plate pipe, the organization that processes flat sheetsand other i
10、tems necessary for the field assembly of finishedproducts.3.1.3 manufacturer, n as related to corrugated metal pipe,the organization that produces the metal sheet from which pipeis made.3.1.4 purchaser, nas related to corrugated metal pipe, theperson or agency that purchases the finished pipe.3.1.5
11、DiscussionWith regard to this specification for sheetfor corrugated steel pipe, the fabricator may also be consideredas the purchaser of the sheet, where that term is used in thisspecification. Such interpretation would not restrict the pur-chaser of the finished pipe from enforcing any provisions o
12、fthis specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 minimized coating structure, na coating character-ized by a finer metallurgical coating structure obtained by atreatment designed to restrict the formation of the normalcoarse grain structure formed during solidification of
13、 theZn-5Al-MM coating.3.2.2 regular coating structure, nthe normal coatingstructure resulting from unrestricted grain growth during nor-mal solidification of the Zn-5Al-MM coating.3.3 Abbreviations:3.3.1 Al T2aluminum-coated Type 21This specification is under the jurisdiction of ASTM Committee A05 o
14、nMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.11 on Sheet Specifications.Current edition approved Dec. 1, 2013. Published December 2013. Originallyapproved in 1995. Last previous edition approved in 2007 as A929/A929M - 01(2007). DOI: 10.1520/A0929_A092
15、9M-01R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive,
16、 PO Box C700, West Conshohocken, PA 19428-2959. United States13.3.2 Al T1aluminum-coated Type 13.3.3 55Al-Zn55 % aluminum-zinc alloy3.3.4 Znzinc3.3.5 Zn-5Al-MMzinc-5 % aluminum-Mischmetal alloy4. Classification4.1 The Zn-5Al-MM coating is available in two coatingclasses, as follows:4.1.1 Class AMini
17、mized coating structure, and4.1.2 Class BRegular coating structure.5. Ordering Information5.1 All sheet, both flat and formed, covered by this speci-fication shall be ordered only to the specified thicknesses in thetable on coated steel sheet thickness requirements.5.2 All material furnished to this
18、 specification shall bechemically treated unless otherwise specified in the purchaseorder.5.3 Orders for material to this specification shall include thefollowing information, as necessary, to describe the desiredproduct adequately:5.3.1 Name of material (steel sheet for corrugated pipe):5.3.2 ASTM
19、designation and year of issue, as A929-_for inch-pound units, or A929M-_ for SI units;5.3.3 Type of metallic coating (zinc, zinc-5 % aluminum-Mischmetal alloy, 55 % aluminum-zinc alloy, aluminum-coated Type 2, or aluminum-coated Type 1) (Note 1);5.3.3.1 For zinc-coated sheet, the coating weight mass
20、(see Table 3). If the coating weight mass is not stated, sheethaving 2.00 oz/ft2610 g/m2 nominal coating shall be fur-nished.5.3.3.2 For Zn-5Al-MM coating the class (coating structure)(see 4.1).5.3.4 Quantity and Dimensions:5.3.4.1 Cut LengthsShow the number of sheets; thickness;width, either flat o
21、r overall corrugated; length; pitch; and depthof corrugations, if corrugated;5.3.4.2 Coiled SheetShow the total weight mass; thick-ness; width; coil requirements (maximum outside diameter,acceptable inside diameter, and maximum weight mass ofindividual coils).5.4 Certification, if required (see 12.1
22、); and5.5 Special requirements.NOTE 1Abbreviations may be used to describe the coating type (see3.3).NOTE 2A typical ordering description (inch-pound units) is asfollows: steel sheet for corrugated pipe in accordance with ASTMA929-_, zinc coated, 5000 sheets, 0.064 by 2512 by 60 in. with 223by12 in.
23、 corrugations, certified.NOTE 3A typical ordering description SI units is as follows: steelsheet for corrugated pipe in accordance with ASTM A929M-_,aluminum coated, Type 2, 45 000 kg, 2.77 by 700 mm by coil, 1500 mmmax outside diameter, 600 mm, inside diameter, 7000 kg max, certified.6. Chemical Co
24、mposition6.1 Base Metal AnalysisThe base metal cast or productanalyses shall conform to the chemical requirements of Table1.6.2 Coating Bath Composition:6.2.1 Zinc CoatingThe coating bath metal shall containnot less than 99 % zinc.6.2.2 Zinc-5 % Aluminum-Mischmetal Alloy CoatingTheingot used for the
25、 coating bath shall conform to SpecificationB750.6.2.3 55 % Aluminum-Zinc Alloy CoatingThe coatingbath metal composition shall be 52 to 58 % aluminum, 2.0 %silicon maximum, and balance zinc.6.2.4 Aluminum Coating Type 2The coating bath metalcomposition shall be as follows (all percentages are maxi-m
26、um): Iron, 3.0 %; silicon, 0.35 %; magnesium, 0.50 %; other,each, 0.05 %; other, total, 0.20 %; balance, aluminum.6.2.5 Aluminum Coating Type 1The coating bath metalcomposition shall be 5 to 11 % silicon, the balance aluminum.7. Mechanical Properties7.1 The metallic-coated sheet shall conform to the
27、 mechani-cal requirements listed in Table 2.7.2 Two tension tests shall be made on random samples offinished material from each cast or heat. One test is sufficientwhen the finished material from said cast or heat is less than 50tons 45 Mg. One tension test shall be made from both thethickest and th
28、innest material rolled, regardless of the weightrepresented, when material rolled from one cast or heat differs0.050 in. 1.25 mm or more in thickness. The samples shall beprepared and tested in accordance with the method specified inSpecification A924/A924M.8. Coating Requirements8.1 The metallic co
29、ating weight mass shall conform to therequirements listed in Table 3 for the type of metallic coatingspecified.8.2 Adhesion of the coating shall be such that no peeling orflaking occurs while the coated sheet is being corrugated andformed into pipe.TABLE 1 Chemical CompositionCast AnalysisProductAna
30、lysisSulfur, max, % 0.05 0.06Sum of carbon, manganese, phosphorus, sulfur,and silicon, max, %0.70 0.74TABLE 2 Mechanical Requirements (Properties of Flat SheetPrior to Fabrication)ATensile strength, min,Bksi MPa 45.0 310Yield strength, min,Bksi MPa 33.0 230Elongation in 2 in. 50 mm,Cmin, % 20ATo det
31、ermine conformance with this specification, round each value for tensilestrength and yield strength to the nearest 0.1 ksi 1 MPa and each value forelongation to the nearest 1 %, both in accordance with the rounding method ofPractice E29.BYield point and tensile strength are based on the thickness of
32、 the base metal. Iftests are made after coating, determine the base metal thickness after stripping thecoating from the ends of the specimen contacting the grips of the tension testingmachine prior to tensile testing.CThe elongation requirement does not apply to material tested after corrugating.A92
33、9/A929M 01 (2013)29. Dimensions and Tolerances9.1 ThicknessSheet thickness shall conform to the dimen-sions prescribed in Table 4. The thickness of the sheet includesboth the base steel and the coating.9.2 LengthPermissible variations in the length of cut-length sheets, both flat and corrugated, sha
34、ll be in accordancewith Specification A924/A924M.9.3 Flat SheetPermissible variations in the width andcamber of flat materials shall be in accordance with Specifi-cation A924/A924M. The flatness tolerances are given in Table5.9.4 Corrugated Sheet:9.4.1 CorrugationsCorrugations shall form smooth con-
35、tinuous curves and tangents. The dimensions of the corruga-tions shall be in accordance with Table 6.9.4.2 Covering Width and Lip DimensionThe coveringwidth of corrugated sheet shall be in accordance with Table 7.The covering width is the distance between the crests of theextreme corrugations. The l
36、ip dimension of corrugated sheetshall be in accordance with Table 8 and is measured along theradial curvature from the crest of the corrugation to the edge ofthe sheet. There is no established tolerance for overall widthsince the covering width and lip dimensions are the governingfactors for the for
37、med product.10. Testing10.1 The manufacturer shall make such tests and measure-ments as deemed necessary to ensure that the coated sheetproduced complies with this specification.10.2 The purchaser may make tests and measurements, asdetermined to be necessary, to confirm conformance with thisspecific
38、ation.10.3 Chemical Analyses of SteelCast analysis (by themanufacturer) and product analysis (by the purchaser) shall bein accordance with Specification A924/A924M.10.4 Mechanical TestingMechanical property tests shallbe conducted on the sheet prior to corrugating or otherTABLE 3 Coating Weight Mass
39、 RequirementsTypeCoating Weight Mass, Total Both Sides Equivalent Coating Thickness, Total Both SidesATriple Spot, Average, minoz/ft2g/m2Single Spot, minoz/ft2g/m2Triple Spot Average, minin. mSingle Spot, minin. mZn 2.00 610 1.80 550 0.0034 86 0.0031 78Zn 4.00 1220 3.60 1100 0.0068 172 0.0062 156Zn-
40、5Al-MM 2.10 640 1.80 550 0.0037 93 0.0032 8055Al-Zn 0.70 210 0.60 180 0.0022 56 0.0019 48Al Type 2BAl Type 11.00 3051.00 3050.90 2750.90 2750.0037 950.0040 1010.0034 860.0036 91ACoating thicknesses are approximate, for information only (see 10.5.1). Conversions are based on the following relationshi
41、ps: (1) Zn coating: 1 oz/ft2= 0.0017 in.; 1 g/m2= 0.1415 m; (2) Zn-5Al-MM coating: 1 oz/ft2= 0.001754 in., 1 g/m2= 0.1460 m; (3) 55Al-Zn coating: 1 oz/ft2= 0.0032 in.; 1 g/m2= 0.26636 m; (4) Al T2 coating: 1oz/ft2= 0.00374 in.; 1 g/m2= 0.31131 m and (5) Al T1 coating: 1 oz/ft2= 0.00398 in.; 1 g/m2=
42、0.33128 m.BAluminum coating Types 2 and 1 include both free and alloy layers.TABLE 4 Coated Steel Sheet Thickness RequirementsNOTE 1Thickness is measured not less than38 in. 10 mm from anedge. On corrugated sheet, thickness is measured on the tangents ofcorrugations.Specified Thickness, in. mmAMinim
43、um Thickness, in. mmA0.040 1.02B0.036 0.910.052 1.32 0.046 1.170.064 1.63 0.057 1.450.079 2.01 0.072 1.830.109 2.77 0.101 2.570.138 3.51 0.129 3.280.168 4.27B0.159 4.04AFor 4 oz/ft21220 g/m2 zinc coating, the specified thickness and the minimumthickness shall be increased by 0.003 in. 0.076 mm to ac
44、count for the greatercoating thickness as compared to the 2 oz/ft2610 g/m2 zinc coating thickness.BAluminum-coated sheet is not furnished in these thicknesses.TABLE 5 Flatness Tolerances (Cut Lengths Only)NOTE 1This table also applies to sheets cut to length from coils by thefabricator when adequate
45、 flattening measures are performed.Specified Thickness, in. mm Specified Width, in. mmFlatnessToler-ance(MaximumDeviation froma HorizontalFlat Surface),in. mm0.064 1.63 and thicker to 60 1500, incl12 130.052 1.32 and thinner to 36 900, incl12 13over 36 900 to 60 1500, incl34 19TABLE 6 Corrugation Si
46、zeNominal Size,in. mmMaximumPitch,Ain.mmMinimumDepth,Bin.mmRadius of Curvature,in. mmnominal minimum223 by12 68by13 278 73 0.48 121116 17 0.5 133 by 1 75 by 25 314 83 0.95 24916 14 0.5 135 by 1 125 by 25 5516 135 0.95 24 13764 40 1.4 36APitch is measured from crest of corrugations, at 90 to the dire
47、ction of thecorrugations.BDepth is measured as the vertical distance from a straight edge resting on thecorrugation crests to the bottom of the intervening valley.TABLE 7 Covering Width Tolerance for Corrugated SheetCovering Width, in. mmTolerance, Over andUnder, in. mmTo 24 600, incl14 6Over 24 600
48、 to 36 900, incl38 10Over 36 900 to 48 1200, incl12 13A929/A929M 01 (2013)3fabrication, when possible, and shall be in accordance withSpecification A924/A924M. If the tests are made aftercorrugating, the specimens shall be taken on the tangents ofcorrugations and used for the determination of tensile and yieldstrengths only.10.5 Coating Weight Mass:10.5.1 Sampling for coating weight mass determinationsshall be in accordance with Specification A924/A924M. Thecoating thickness may be determined by the procedures de-scribed in Specification A924/A924M, but the weigh-strip-weigh procedur
