1、Designation: A929/A929M 17A929/A929M 18Standard 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 or, in
2、 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. Scope*1.1 This specification covers steel sheet used in the manufacture of corrugated steel
3、pipe for storm sewers, culverts, drains, andsimilar uses. The sheet is metallic coated by the hot-dip process. Material for this use is furnished in coils, flat in cut lengths, andcorrugated in cut lengths. Many metallic coated materials are covered in this material specification. Users must determi
4、ne whichproduct 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) alloy coated,1.1.3 55 % aluminum-zinc (55Al-Zn) alloy coated,1.1.4 Aluminum-coated Type 2 (aluminized Type 2), and1.1.5 Aluminum-coated
5、 Type 1 (aluminized Type 1).1.2 Zinc-coated sheet is available in two coating weights masses. Other metallic coatings are available in one coating weightmass only.1.3 The values stated in either inch-pound units or SI units are to be regarded separately as the standard. Within the text, theSI units
6、are shown in brackets. The values stated in each system are not equivalents; therefore, each system must be usedindependently of the other. Combining values from the two systems may result in nonconformance with the specification.1.4 This international standard was developed in accordance with inter
7、nationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A90/A90
8、M Test Method for Weight Mass of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy CoatingsA428/A428M Test Method for Weight Mass of Coating on Aluminum-Coated Iron or Steel ArticlesA902 Terminology Relating to Metallic Coated Steel ProductsA924/A924M Specification for General Requirements
9、for Steel Sheet, Metallic-Coated by the Hot-Dip ProcessB750 Specification for GALFANE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications3. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification, refer to Terminology A902. T
10、he following definitions are as stated inthat terminology:3.1.2 fabricator, nas related to corrugated metal pipe, (1) the organization that produces the finished pipe; or (2) for structuralplate pipe, the organization that processes flat sheets and other items necessary for the field assembly of fin
11、ished products.3.1.3 manufacturer, nas related to corrugated metal pipe, the organization that produces the metal sheet from which pipe ismade.1 This specification is under the jurisdiction ofASTM Committee A05 on Metallic-Coated Iron and Steel Products and is the direct responsibility of Subcommitt
12、ee A05.17on Corrugated Steel Pipe Specifications.Current edition approved Feb. 1, 2017May 1, 2018. Published February, 2017May 2018. Originally approved in 1995. Last previous edition approved in 20132017 asA929/A929M - 01A929/A929M - 17.(2013). DOI: 10.1520/A0929_A0929M-17.10.1520/A0929_A0929M-18.2
13、 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to
14、provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit 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 versionof
15、the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.4 purchaser, nas related to corrugated me
16、tal pipe, the person or agency that purchases the finished pipe.3.1.5 DiscussionWith regard to this specification for sheet for corrugated steel pipe, the fabricator may also be considered asthe purchaser of the sheet, where that term is used in this specification. Such interpretation would not rest
17、rict the purchaser of thefinished pipe from enforcing any provisions of this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 minimized coating structure, na coating characterized by a finer metallurgical coating structure obtained by a treatmentdesigned to restrict the formati
18、on of the normal coarse grain structure formed during solidification of the Zn-5Al-MM coating.3.2.2 regular coating structure, nthe normal coating structure resulting from unrestricted grain growth during normalsolidification of the Zn-5Al-MM coating.3.3 Abbreviations:3.3.1 Al T2aluminum-coated Type
19、 23.3.2 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 coating classes, as follows:4.1.1 Class AMinimized coating structure, and4.1.2 Class BRegular coating st
20、ructure.5. Ordering Information5.1 All sheet, both flat and formed, covered by this specification shall be ordered only to the specified thicknesses in the tableon coated steel sheet thickness requirements.5.2 All material furnished to this specification shall be chemically treated unless otherwise
21、specified in the purchase order.5.3 Orders for material to this specification shall include the following information, as necessary, to describe the desired productadequately:5.3.1 Name of material (steel sheet for corrugated pipe):5.3.2 ASTM designation and year of issue, as A929-_ for inch-pound u
22、nits, or A929M-_ for SI units;5.3.3 Type of metallic coating (zinc, zinc-5 % aluminum-Mischmetal alloy, 55 % aluminum-zinc alloy, aluminum-coated Type2, or aluminum-coated Type 1) (Note 1);5.3.3.1 For zinc-coated sheet, the coating weight mass is listed in Table 3. Sheet having 2.00 oz/ft2 610 g/m2
23、nominal coatingshall be furnished.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 or overall corrugated; length; pitch; and depth ofcorrugations, if corrugated;5.3.4.2 Coil
24、ed SheetShow the total weight mass; thickness; width; coil requirements (maximum outside diameter, acceptableinside diameter, and maximum weight mass of individual coils).5.4 Certification, if required (see 12.1); and5.5 Special requirements.NOTE 1Abbreviations may be used to describe the coating ty
25、pe (see 3.3).NOTE 2A typical ordering description (inch-pound units) is as follows: steel sheet for corrugated pipe in accordance with ASTM A929-_, zinccoated, 5000 sheets, 0.064 by 2512 by 60 in. with 223 by 12 in. corrugations, certified.NOTE 3A typical ordering description SI units is as follows:
26、 steel sheet for corrugated pipe in accordance with ASTM A929M-_, aluminumcoated, Type 2, 45 000 kg, 2.77 by 700 mm by coil, 1500 mm max outside diameter, 600 mm, inside diameter, 7000 kg max, certified.TABLE 1 Chemical CompositionCast Analysis ProductAnalysisSulfur, max, % 0.05 0.06Sum of carbon, m
27、anganese, phosphorus, sulfur,and silicon, max, %0.70 0.74A929/A929M 1826. Chemical Composition6.1 Base Metal AnalysisThe base metal cast or product analyses shall conform to the chemical requirements of Table 1.6.2 Coating Bath Composition:6.2.1 Zinc CoatingThe coating bath metal shall contain not l
28、ess than 99 % zinc.6.2.2 Zinc-5 % Aluminum-Mischmetal Alloy CoatingThe ingot used for the coating bath shall conform to Specification B750.6.2.3 55 % Aluminum-Zinc Alloy CoatingThe coating bath metal composition shall be 52 to 58 % aluminum, 2.0 % siliconmaximum, and balance zinc.6.2.4 Aluminum Coat
29、ing Type 2The coating bath metal composition shall be as follows (all percentages are maximum): 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 metal composition shall be 5 to 11 % silicon, the
30、 balance aluminum.7. Mechanical Properties7.1 The metallic-coated sheet shall conform to the mechanical requirements listed in Table 2.7.2 Two tension tests shall be made on random samples of finished material from each cast or heat. One test is sufficient whenthe finished material from said cast or
31、 heat is less than 50 tons 45 Mg. One tension test shall be made from both the thickest andthinnest material rolled, regardless of the weight represented, when material rolled from one cast or heat differs 0.050 in. 1.25 mmor more in thickness. The samples shall be prepared and tested in accordance
32、with the method specified in SpecificationA924/A924M.8. Coating Requirements8.1 The metallic coating weight mass shall conform to the requirements listed in Table 3 for the type of metallic coatingspecified.8.2 Adhesion of the coating shall be such that no peeling or flaking occurs while the coated
33、sheet is being corrugated and formedinto pipe.9. Dimensions and Tolerances9.1 ThicknessSheet thickness shall conform to the dimensions prescribed in Table 4. The thickness of the sheet includes boththe base steel and the coating.9.2 LengthPermissible variations in the length of cut-length sheets, bo
34、th flat and corrugated, shall be in accordance withSpecification A924/A924M.9.3 Flat SheetPermissible variations in the width and camber of flat materials shall be in accordance with SpecificationA924/A924M. The flatness tolerances are given in Table 5.9.4 Corrugated Sheet:9.4.1 CorrugationsCorrugat
35、ions shall form smooth continuous curves and tangents. The dimensions of the corrugations shallbe in accordance with Table 6.9.4.2 Covering Width and Lip DimensionThe covering width of corrugated sheet shall be in accordance with Table 7. Thecovering width is the distance between the crests of the e
36、xtreme corrugations. The lip dimension of corrugated sheet shall be inaccordance with Table 8 and is measured along the radial curvature from the crest of the corrugation to the edge of the sheet. Thereis no established tolerance for overall width since the covering width and lip dimensions are the
37、governing factors for the formedproduct.TABLE 2 Mechanical Requirements (Properties of Flat SheetPrior to Fabrication)ATensile strength, min,B ksi MPa 45.0 310Yield strength, min,B ksi MPa 33.0 230Elongation in 2 in. 50 mm,C min, % 20A To determine conformance with this specification, round each val
38、ue 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.B Yield point and tensile strength are based on the thickness of the base metal. Iftests are made after coating, determin
39、e the base metal thickness after stripping thecoating from the ends of the specimen contacting the grips of the tension testingmachine prior to tensile testing.C The elongation requirement does not apply to material tested after corrugating.A929/A929M 18310. Testing10.1 The manufacturer shall make s
40、uch tests and measurements as deemed necessary to ensure that the coated sheet producedcomplies with this specification.10.2 The purchaser may make tests and measurements, as determined to be necessary, to confirm conformance with thisspecification.10.3 Chemical Analyses of SteelCast analysis (by th
41、e manufacturer) and product analysis (by the purchaser) shall be inaccordance with Specification A924/A924M.TABLE 3 Coating Weight Mass RequirementsTypeCoating Weight Mass, Total Both Sides Equivalent Coating Thickness, Total Both SidesATriple Spot, Average, minoz/ft2 g/m2Single Spot, minoz/ft2 g m2
42、Triple Spot Average, minin. mSingle Spot, minin. mZn 2.00 610 1.80 550 0.0034 86 0.0031 78Zn-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 91A Coating thicknesses are appr
43、oximate, for information only (see 10.5.1). Conversions are based on the following relationships: (1) Zn coating: 11.00 oz/ft2 =0.00170.00168 in.; 11.00 g/m2 = 0.14150.140 m; (2) Zn-5Al-MM coating: 11.00 oz/ft2 = 0.0017540.00175 in., 11.00 g/m2 = 0.14600.146 m; (3) 55Al-Zn coating: 11.00oz/ft2 = 0.0
44、0320.00320 in.; 11.00 g/m2 = 0.266360.267 m; (4) Al T2 coating: 11.00 oz/ft2 = 0.00374 in.; 11.00 g/m2 = 0.311310.312 m and (5) Al T1 coating: 11.00 oz/ft2= 0.00398 in.; 11.00 g/m2 = 0.331280.331 m.B Aluminum coating Types 2 and 1 include both free and alloy layers.TABLE 4 Coated Steel Sheet Thickne
45、ss RequirementsNOTE 1Thickness is measured not less than 38 in. 10 mm from anedge. On corrugated sheet, thickness is measured on the tangents ofcorrugations.Specified Thickness, in. mm Minimum Thickness, in. mm0.040 1.02A 0.036 0.910.052 1.32 0.046 1.170.064 1.63 0.057 1.450.079 2.01 0.072 1.830.109
46、 2.77 0.101 2.570.138 3.51 0.129 3.280.168 4.27A 0.159 4.04A Aluminum-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 flattening measures are performed.Spe
47、cified Thickness, in. mm Specified Width, in. mmFlatness Tolerance(Max. Deviationfrom a HorizontalFlat Surface), in.mm0.064 1.63 and thicker to 60 1500, incl 12 130.052 1.32 and thinner to 36 900, incl 12 13over 36 900 to 60 1500,incl34 19TABLE 6 Corrugation SizeNominal Size,in. mmMaximumPitch,A in.
48、mmMinimumDepth,B in.mmRadius of Curvature,in. mmnominal minimum223 by 12 68 by 13 278 73 0.48 12 1116 17 0.5 133 by 1 75 by 25 314 83 0.95 24 916 14 0.5 135 by 1 125 by 25 5516 135 0.95 24 13764 40 1.4 36A Pitch is measured from crest of corrugations, at 90 to the direction of thecorrugations.B Dept
49、h is measured as the vertical distance from a straight edge resting on thecorrugation crests to the bottom of the intervening valley.A929/A929M 18410.4 Mechanical TestingMechanical property tests shall be conducted on the sheet prior to corrugating or other fabrication,when possible, and shall be in accordance with Specificati
