1、Designation: A 929/A 929M 01 (Reapproved 2007)Standard Specification forSteel Sheet, Metallic-Coated by the Hot-Dip Process forCorrugated Steel Pipe1This standard is issued under the fixed designation A 929/A 929M; the number immediately following the designation indicates the yearof original adopti
2、on or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers steel sheet used in the manu-facture of corruga
3、ted steel 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
4、determine 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-
5、coated 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 un
6、its are 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:2A 90/A 90M Test Method f
7、or Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA 428/A 428M Test Method for Weight Mass of Coatingon Aluminum-Coated Iron or Steel ArticlesA 902 Terminology Relating to Metallic Coated Steel Prod-uctsA 924/A 924M Specification for General Requirements forSteel Sh
8、eet, Metallic-Coated by the Hot-Dip ProcessB 750 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: For definitions of terms u
9、sed in this speci-fication, refer to Terminology A 902. The following definitionsare as stated in that terminology:3.1.1 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 sheet
10、sand other items necessary for the field assembly of finishedproducts.3.1.2 manufacturer, n as related to corrugated metalpipe, the organization that produces the metal sheet from whichpipe is made.3.1.3 purchaser, nas related to corrugated metal pipe,the person or agency that purchases the finished
11、 pipe.3.1.4 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
12、provisions ofthis 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 solid
13、ification of 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:Abbreviations:3.3.1 Al T2aluminum-coated Type 23.3.2 Al T1aluminum-coated Type 13.3.3 55Al
14、-Zn55 % aluminum-zinc alloy1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.11 on Sheet Specifications.Current edition approved May 1, 2007. Published July 2007. Originally approvedin 199
15、5. Last previous edition approved in 2001 as A 929/A 929M - 01.2For 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 websit
16、e.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.3.4 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 AMinimized coating s
17、tructure, 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 specification
18、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 designation and
19、 year of issue, as A 929-_for inch-pound units, or A 929M-_ 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(see Table 3)
20、. 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 Lengths Show the number of sheets; thick-ness; width, either flat or overall
21、corrugated; length; pitch; anddepth of corrugations, if corrugated;5.3.4.2 Coiled Sheet Show 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); and5.5
22、 Special requirements.NOTE 1Abbreviations may be used to describe the coating type (see3.3).NOTE 2A typical ordering description (inch-pound units) is as fol-lows: steel sheet for corrugated pipe in accordance with ASTM A 929-_, zinc coated, 5000 sheets, 0.064 by 2512 by 60 in. with 223 by12in. corr
23、ugations, certified.NOTE 3A typical ordering description SI units is as follows: steelsheet for corrugated pipe in accordance with ASTM A 929M-_,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 Compos
24、ition6.1 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 Coating The coating bath metal shall containnot less than 99 % zinc.6.2.2 Zinc-5 % Aluminum-Mischmetal Alloy CoatingTheingot used for the co
25、ating bath shall conform to SpecificationB 750.6.2.3 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-mum
26、): 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 m
27、echani-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 thin
28、nest 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 A 924 A 924M.8. Coating Requirements Coating Requiremen
29、ts8.1 The metallic coating 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.9. Dimensions and Tolerances9.
30、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.TABLE 1 Chemical CompositionCast AnalysisProductAnalysisSulfur, max, % 0.05 0.06Sum of carbon, manganese, phosphorus, sulfur,and silicon, max, %0.
31、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 determine conformance with this specification, round each value for tensilestrength and yield stre
32、ngth 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 the base metal.If tests are made after coating, determine the base metal thickness after strip
33、pingthe coating from the ends of the specimen contacting the grips of the tensiontesting machine prior to tensile testing.CThe elongation requirement does not apply to material tested after corrugat-ing.A 929/A 929M 01 (2007)29.2 LengthPermissible variations in the length of cut-length sheets, both
34、flat and corrugated, shall be in accordancewith Specification A 924 A 924M.9.3 Flat SheetPermissible variations in the width andcamber of flat materials shall be in accordance with Specifi-cation A 924 A 924M. The flatness tolerances are given inTable 5.9.4 Corrugated Sheet:9.4.1 Corrugations Corrug
35、ations shall form smooth con-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 t
36、heextreme corrugations. The lip 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
37、 governingfactors for the formed 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
38、conformance with thisspecification.10.3 Chemical Analyses of SteelCast analysis (by themanufacturer) and product analysis (by the purchaser) shall bein accordance with Specification A 924 A 924M.10.4 Mechanical TestingMechanical property tests shallbe conducted on the sheet prior to corrugating or o
39、therfabrication, when possible, and shall be in accordance withSpecification A 924 A 924M. If the tests are made afterTABLE 3 Coating Weight Mass RequirementsTypeCoating Weight Mass, Total Both Sides Equivalent Coating Thickness, Total Both SidesATriple Spot, Average, minoz/ft2g/m2Single Spot, minoz
40、/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-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
41、 1010.0034 860.0036 91ACoating thicknesses are approximate, for information only (see 10.5.1). Conversions are based on the following relationships: (1) Zn coating: 1 oz/ft2= 0.0017 in.; 1g/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=
42、0.0032 in.; 1 g/m2= 0.26636 m; ( 4) Al T2 coating:1 oz/ft2= 0.00374 in.; 1 g/m2= 0.31131 m and (5) Al T1 coating: 1 oz/ft2= 0.00398 in.; 1 g/m2= 0.33128 m.BAluminum coating Types 2 and 1 include both free and alloy layers.TABLE 4 Coated Steel Sheet Thickness RequirementsNOTEThickness is measured not
43、 less than38 in. 10 mm from anedge. On corrugated sheet, thickness is measured on the tangents ofcorrugations.Specified Thickness, in. mmAMinimum 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 4.27
44、B0.159 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 account for the greatercoating thickness as compared to the 2 oz/ft2610 g/m2 zinc coating thickness.BAluminum-coated sheet is not furnished in these thicknesse
45、s.TABLE 5 Flatness Tolerances (Cut Lengths Only)NOTEThis table also applies to sheets cut to length from coils by thefabricator when adequate flattening measures are performed.Specified Thickness, in. mm Specified Width, in. mmFlatnessToler-ance(MaximumDeviation froma HorizontalFlat Surface),in. mm0
46、.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 SizeNominal 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
47、 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 direction of thecorrugations.BDepth is measured as the vertical distance from a straight edge resting on thecorrugation crests to the bottom of the intervening val
48、ley.TABLE 7 Covering Width Tolerance for Corrugated SheetCovering Width, in. mmTolerance, Over andUnder, in. mmTo 24 600, incl14 6Over 24 600 to 36 900, incl38 10Over 36 900 to 48 1200, incl12 13TABLE 8 Corrugated Sheet Lip DimensionsNominal Corrugation Size, in.mmFor Riveted PipeConstruction,Ain.mmFor Spot-WeldedPipe Construction,min in. mm223 by12 68by1334 19716 113 by 1 75 by 2578 2212 135 by 1 125 by 2578 2212 13ATolerances, +316 in. +5 mm, 0.A 929/A 929M 01 (2007)3corrugating, the specimens shall be taken on the tangents ofcorrugatio
