1、Standard Specification for Aluminum Alloy Sheet for Corrugated Aluminum Pipe AASHTO Designation: M 197-06 (2016)1 Release: Group 2 (June 2016) ASTM Designation: B744/B744M-05 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C.
2、20001 TS-4b M 197-1 AASHTO Standard Specification for Aluminum Alloy Sheet for Corrugated Aluminum Pipe AASHTO Designation: M 197-06 (2016)1Release: Group 2 (June 2016) ASTM Designation: B744/B744M-05 1. SCOPE 1.1. This specification covers aluminum alloy sheets used in the fabrication of corrugated
3、 aluminum pipe intended for use for storm water drainage, underdrains, culverts, and similar uses. The material is furnished corrugated in cut lengths, and uncorrugated in coils and cut lengths. 2. REFERENCED DOCUMENTS 2.1. ASTM Standards: B209M, Standard Specification for Aluminum and Aluminum-Allo
4、y Sheet and Plate (Metric) B666/B666M, Standard Practice for Identification Marking of Aluminum and Magnesium Products 2.2. ANSI Standard: H35.2M, Dimensional Tolerances for Aluminum Mill Products Metric 3. TERMINOLOGY 3.1. Descriptions of Terms Specific to This Standard: 3.1.1. fabricatorthe produc
5、er of the pipe. 3.1.2. manufacturerthe producer of the sheet. 3.1.3. purchaserthe purchaser of the finished pipe. 4. ORDERING INFORMATION 4.1. Sheet covered by this specification shall be ordered only to the specified thicknesses listed in Table 1. 2016 by the American Association of State Highway a
6、nd Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 197-2 AASHTO Table 1Sheet Thicknessa Specified Thickness, mm Minimum Thickness, mm 1.22 1.14 1.52 1.44 1.91 1.82 2.67 2.55 3.43 3.29 4.17 3.99 a Thickness is measured at any point on the sheet not
7、less than 10 mm from an edge and, if corrugated, on the tangents of corrugations. 4.2. Orders for material to this specification shall include the following information, as necessary, to adequately describe the desired product: 4.2.1. Name of material (aluminum alloy sheet for corrugated aluminum pi
8、pe); 4.2.2. AASHTO designation number and year of issue; 4.2.3. Corrugation size, if corrugated (Section 8.4); 4.2.4. Dimensions (thickness; width, either flat or overall corrugated; and length, if cut length); 4.2.5. Coil size requirements (specify maximum outside diameter (OD), acceptable inside d
9、iameter (ID), and maximum mass); 4.2.6. Certification, if required (Section 11.1); and 4.2.7. Special requirements. Note 1Typical ordering descriptions are as follows: Aluminum alloy sheet for corrugated aluminum pipe conforming to M 197-_, 2.67 by 760 mm by coil, 1200 mm OD max, 600 mm ID min, 5000
10、 kg max, certified with test report. 5. GENERAL REQUIREMENTS 5.1. Aluminum alloy sheets or coils supplied under this specification shall conform to the applicable requirements of ASTM B209M for Alclad alloy 3004-H34 for annular pipe and Alclad alloy 3004-H32 for helical pipe. 6. CHEMICAL COMPOSITION
11、 6.1. The sheet material shall conform to the chemical composition limits in ASTM B209M, as shown in Table 2. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 197-3 AASHTO Table 2Chemical Composi
12、tiona Sheet Core, percent Sheet Cladding,bpercent Alloy 3004 7072 Silicon 0.30 (Si + Fe) = 0.7 Iron 0.7 Copper 0.25 0.10 Manganese 1.01.5 0.10 Magnesium 0.81.3 0.10 Zinc 0.25 0.81.3 Other each 0.05 0.05 Total 0.15 0.15 Aluminum Remainder Remainder aComposition in mass percent maximum unless shown as
13、 range. bComposition of cladding alloy as applied during the course of manufacture. Samples from finished sheet or plate shall not be required to conform to these limits. 7. MECHANICAL REQUIREMENTS 7.1. The sheet material shall conform to the requirements for mechanical properties specified in ASTM
14、B209M, as shown in Table 3 when tested prior to corrugating or other fabrication. Note 2Sheet material tested after corrugating and other fabricating should conform to the specified tensile and yield strength requirements, but due to cold working, conformance to the elongation requirements may not b
15、e obtained. Table 3Mechanical Requirements, Alclad Alloy 3004-H34 Specified Thickness, mm Tensile Strength Yield Strength (0.2 Percent Offset), Min, MPa Elongation in 50 mm, Min, Percent Min, MPa Max, MPa Alclad 3004-H32 alloy 0.91, 1.20 185 235 140 3 1.2 through 4.17 185 235 140 5 Alclad 3004-H34 a
16、lloy 0.91, 1.20 215 260 165 3 1.20 through 4.17 215 260 165 4 8. DIMENSIONS AND TOLERANCES 8.1. Sheet thickness shall conform to dimensions prescribed in Table 1. 8.2. The nominal cladding thickness on each side shall be 5 percent of the total composite thickness. The average cladding thickness, det
17、ermined according to Section 9.4, shall not be less than 4 percent of the total composite thickness. 8.3. Permissible variations in flat width, length, and squareness shall be in accordance with ANSI H35.2M. 8.4. Corrugations shall form smooth continuous curves and tangents. The dimensions of the co
18、rrugations shall be in accordance with Table 4. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 197-4 AASHTO 8.5. Covering width of corrugated sheet shall be in accordance with Table 5. Covering
19、 width is the distance between the crests of the extreme corrugations. There is no established tolerance for overall width since the covering width and lip dimensions are the governing factors for the formed product. The lip dimension of corrugated sheet shall be in accordance with Table 6. This dim
20、ension is measured along the radial curvature from the crest of the corrugation to the edge of the sheet. Table 4Corrugation Requirements Nominal Size, mm Max Pitcha, mm Min Depthb, mm Inside Radius Nominal, mm Min, mm 68 by 13 73 12 17 12 75 by 25 83 24 14 12 aPitch is measured from crest to crest
21、of corrugations, at 90 degrees to the direction of the corrugations. bDepth is measured as the vertical distance from a straightedge resting on the corrugation crests to the bottom of the intervening valley. Table 5Covering Width Tolerance for Corrugated Sheet Covering Width, mm Tolerance Over and U
22、nder, mm To 610, incl 6.5 Over 610 to 915, incl 9.5 Over 915 to 1220, incl 13 Table 6Corrugated Sheet Lip Dimensions Nominal Corrugation Size, mm Lip Dimension Min, mm Max, mm 68 by 13 19 24 75 by 25 22 28 150 by 25 22 38 9. SAMPLING AND TESTING 9.1. Sampling and testing shall be according to ASTM B
23、209M. The manufacturer shall make adequate tests and measurements to ensure that the material produced complies with this specification. 9.1.1. Test results, including chemical composition, mechanical properties, and cladding thickness, shall be maintained by the sheet manufacturer for 7 years and s
24、hall be made available to the fabricator and purchaser upon request, for examination at the manufacturers facility unless otherwise agreed upon. 9.2. The fabricator or the purchaser may make such tests as necessary to determine the acceptability of the material or to verify the correctness of a cert
25、ification. 9.3. Mechanical properties shall be determined on sheet prior to corrugating or other fabricating, except tests may be made after fabrication by the purchaser for tensile and yield strengths. 9.4. When the thickness of the cladding is to be determined on finished material, no fewer than t
26、hree transverse samples approximately 19 mm in length shall be mounted to expose a transverse cross section and polished for examination with a metallurgical microscope. Using a 100X magnification, the maximum and minimum cladding thickness shall be measured in each of five fields approximately 2.5
27、mm apart along both sides of the cross section. The average of ten thickness measurements on each side is the average cladding thickness. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4b M 197-5 AA
28、SHTO Note 3If necessary to better define the interface between core and cladding, the polished surface may be etched with Kellers etch or equivalent. Kellers etch contains: 1 part HF conc., 1.5 parts HCl conc., 2.5 parts HNO3conc., and 95 parts water. 10. REJECTION 10.1. Material tested by the purch
29、aser and found not conforming to this specification may be rejected. 11. CERTIFICATION 11.1. When specified in the purchase order or contract, a manufacturers certification shall be furnished to the purchaser of the sheet (fabricator) or to the purchaser of the finished pipe stating that samples rep
30、resenting each lot have been tested and inspected in accordance with this specification and the requirements have been met. When specified in the purchase order or contract, a report of the mechanical test results and the chemical composition limits shall be furnished. Note 4As the identity of the s
31、heet is not maintained from the original ingot production, if numerical results are required by the purchaser, tests should be performed on the finished sheet. 12. PRODUCT MARKING 12.1. Each corrugated sheet furnished for use in annular corrugated pipe shall be identified by the sheet manufacturer s
32、howing the following: 12.1.1. Name or trademark of sheet manufacturer, 12.1.2. Alloy and temper, 12.1.3. Specified thickness, 12.1.4. Date of corrugating by a six-digit number indicating, in order, the year, month, and day of the month, and 12.1.5. AASHTO designation number. 12.2. Coils and cut-leng
33、th flat sheets shall be similarly marked by the manufacturer (except Section 12.1.4) at 0.6- to 1.5-m intervals, or the information shall be included on a tag so that the fabricator can mark the sheet at the time of fabrication. 12.3. The marking shall be applied to the sheet by a permanent method s
34、uch as coining in accordance with ASTM B666/B666M. 1This specification is equivalent to ASTM B744/B744M-05 except for including requirements from ASTM B209M on cladding thickness, chemical composition, and mechanical requirements. 2016 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.
