1、Designation: A929/A929M 01 (Reapproved 2013)A929/A929M 17Standard 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 origin
2、al 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.1. Scope Scope*1.1 This specification covers steel sheet used in the manufact
3、ure of corrugated steel 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 specifica
4、tion. Users must determine 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),
5、and1.1.5 Aluminum-coated 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. Withi
6、n the text, theSI units 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.2. Referenced Documents2.1 ASTM Standards:2A90
7、/A90M 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 Requireme
8、nts 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 A90
9、2. The 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
10、 finished products.3.1.3 manufacturer, nas related to corrugated metal pipe, the organization that produces the metal sheet from which pipe ismade.3.1.4 purchaser, nas related to corrugated metal pipe, the person or agency that purchases the finished pipe.1 This specification is under the jurisdicti
11、on ofASTM Committee A05 on Metallic-Coated Iron and Steel Products and is the direct responsibility of Subcommittee A05.17on Corrugated Steel Pipe Specifications.Current edition approved Dec. 1, 2013Feb. 1, 2017. Published December 2013February, 2017. Originally approved in 1995. Last previous editi
12、on approved in 20072013as A929/A929M - 01(2007).(2013). DOI: 10.1520/A0929_A0929M-01R13.10.1520/A0929_A0929M-17.2 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 s
13、tandards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to 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 accur
14、ately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof 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
15、Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.5 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
16、restrict 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 for
17、mation 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
18、Type 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 coatin
19、g structure.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 otherw
20、ise 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-pou
21、nd 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 Type2, or aluminum-coated Type 1) (Note 1);5.3.3.1 For zinc-coated sheet, the coating weight mass (see Table 3). If theis listed in Table 3coating wei
22、ght mass is notstated, sheet . Sheet having 2.00 oz/ft2 610 g/m2 nominal coating shall 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; l
23、ength; pitch; and depth ofcorrugations, if corrugated;5.3.4.2 Coiled 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 requi
24、rements.NOTE 1Abbreviations may be used to describe the coating type (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, cert
25、ified.NOTE 3A typical ordering description SI units is as follows: 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.6. Chemical Composition6.1 Base
26、 Metal AnalysisThe base metal cast or product analyses shall conform to the chemical requirements of Table 1.6.2 Coating Bath Composition:TABLE 1 Chemical CompositionCast Analysis ProductAnalysisSulfur, max, % 0.05 0.06Sum of carbon, manganese, phosphorus, sulfur,and silicon, max, %0.70 0.74A929/A92
27、9M 1726.2.1 Zinc CoatingThe coating bath metal shall contain not less 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 % al
28、uminum, 2.0 % siliconmaximum, and balance zinc.6.2.4 Aluminum Coating 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 1
29、The coating bath metal composition shall be 5 to 11 % silicon, the 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.
30、One test is sufficient whenthe finished material from said cast or 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
31、thickness. The samples shall be prepared and tested in accordance 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
32、 shall be such that no peeling or flaking occurs while the coated 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 L
33、engthPermissible variations in the length of cut-length sheets, both 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 ar
34、e given in Table 5.9.4 Corrugated Sheet:9.4.1 CorrugationsCorrugations 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 Tabl
35、e 7. Thecovering width is the distance between the crests of the extreme 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
36、overall width since the covering width and lip dimensions are the governing factors for the formedproduct.10. Testing10.1 The manufacturer shall make such tests and measurements as deemed necessary to ensure that the coated sheet producedcomplies with this specification.TABLE 2 Mechanical Requiremen
37、ts (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 value for tensilestrength and yield strength to the nearest 0.1 ksi 1 MP
38、a 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, determine the base metal thickness after stripping thecoating from the ends o
39、f 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 17310.2 The purchaser may make tests and measurements, as determined to be necessary, to confirm conformance with thi
40、sspecification.10.3 Chemical Analyses of SteelCast analysis (by the manufacturer) and product analysis (by the purchaser) shall be inaccordance with Specification A924/A924M.10.4 Mechanical TestingMechanical property tests shall be conducted on the sheet prior to corrugating or other fabrication,whe
41、n possible, and shall be in accordance with Specification A924/A924M. If the tests are made after corrugating, the specimensshall be taken on the tangents of corrugations and used for the determination of tensile and yield strengths only.10.5 Coating Weight Mass:10.5.1 Sampling for coating weight ma
42、ss determinations shall be in accordance with Specification A924/A924M. The coatingthickness may be determined by the procedures described in Specification A924/A924M, but the weigh-strip-weigh proceduresdescribed in 10.5.2 shall apply in case of dispute.10.5.2 Test for coating weight mass using the
43、 following procedures:10.5.2.1 Zinc CoatingsTest Method A90/A90M.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 m2Triple Spot Average, minin. mSingle Spot, m
44、inin. 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 1010.0034 860.0036 91A Coating thicknesses are app
45、roximate, for information only (see 10.5.1). Conversions are based on the following relationships: (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 coa
46、ting: 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 = 0.33128 m.B Aluminum coating Types 2 and 1 include both free and alloy layers.TABLE 4 Coated Steel Sheet Thickness RequirementsNOTE 1Thickness is measured not less than 38 in. 10 mm from anedge. O
47、n corrugated sheet, thickness is measured on the tangents ofcorrugations.Specified Thickness, in. mmA Minimum Thickness, in. mmA0.040 1.02B 0.036 0.910.040 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 2.77 0.101 2.570.138 3.51 0.129 3.280.168 4.27B 0.159 4.040
48、.168 4.27A 0.159 4.04AFor 4 oz/ft2 1220 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/ft2 610 g/m2 zinc coating thickness.A Aluminum-coated sheet is not furnished in the
49、se 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.Specified Thickness, in. mm Specified Width, in. mmFlatness Toler-ance(MaximumTolerance(Max. Deviationfrom a HorizontalFlat Surface), in.mm0.064 1.63 and thicker to 60 1500
