1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AMS4079H AEROSPACE MATERIAL SPECIFICATION AMS4079 REV. H Issued 1959-06 Reaffirmed 2007-04 Revi
5、sed 2017-03 Superseding AMS4079G Aluminum Alloy, Drawn, Round, Seamless, Tubing 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-O) Close Tolerance, Annealed (Composition similar to UNS A96061) RATIONALE AMS4079H revises Condition (3.2.1), Properties (3.3.2, 3.3.3), Quality (3.4.1), and Reports (4.4.1), and i
6、s a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of drawn, round, seamless tubing with wall thickness of 0.018 to 0.500 inch (0.46 to 12.70 mm), inclusive (see 8.5). 1.2 Application This tubing has been used typically fo
7、r ducts requiring small radius bends and moderate strength after solution and precipitation heat treatment, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to th
8、e extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. 2.1 SAE Public
9、ations Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. ARP1917 Clarification of Terms Used in Aerospace Metals Specifications AMS2355 Quality Assurance, Sampling and Testing,
10、 Aluminum Alloys and Magnesium Alloy, Wrought Products (Except Forging Stock), and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials SAE INTERNATIONAL AMS4079H Page 2 of 6 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O.
11、Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B660 Packaging/Packing of Aluminum and Magnesium Products ASTM B666/B666M Identification Marking of Aluminum and Magnesium Products ASTM E18 Rockwell Hardness of Metallic Materials 2.3 ANSI Publications Copies of these
12、 documents are available online at http:/webstore.ansi.org/ ANSI H35.1/H35.1M American National Standard Alloy and Temper Designation Systems for Aluminum ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL
13、REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355. Table 1 - Composition Element Min Max Silicon 0.40 0.8 Iron - 0.7 Copper 0.15 0.40 Manganese - 0.15 Magnesium 0.8 1.2 Chromium 0.04 0.35 Zinc - 0.25 Titanium - 0.15 Other
14、Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition Annealed in accordance with AMS2772, and drawn to meet dimensional tolerances of 3.5. 3.2.1 Tubing shall be supplied unground with an as-drawn surface finish, unless otherwise specified. 3.3 Properties Tubing shall c
15、onform to the following requirements, determined in accordance with AMS2355 on the mill produced size. 3.3.1 As Annealed 3.3.1.1 Tensile Properties Shall be shown in Table 2 for tubing having nominal wall thickness of 0.018 to 0.500 inch (0.46 to 12.70 mm), inclusive. SAE INTERNATIONAL AMS4079H Page
16、 3 of 6 Table 2 - Tensile properties Property Value Tensile Strength, max 22.0 ksi (152 MPa) Yield Strength at 0.2% Offset, max 14.0 ksi (97 MPa) Elongation in 2 inches (50.8 mm) or 4D, min Strip 15% Full Section 15% 3.3.1.2 Flattening Tubing, having nominal wall thickness less than 10% of the nomin
17、al OD, shall withstand, without cracking, flattening sideways under a load applied gradually at room temperature until the outside dimension under load is equal to the flattening factor shown in Table 3 times the nominal wall thickness. Table 3 - Flattening factor Nominal Wall Thickness Inch Nominal
18、 Wall Thickness Millimeters Factor Up to 0.120, incl Up to 3.05, incl 3 Over 0.120 to 0.238, incl Over 3.05 to 6.05, incl 4 Over 0.238 to 0.500, incl Over 6.05 to 12.70, incl 6 3.3.1.2.1 If tubing does not pass the flattening test of 3.3.1.2, a section of tube not less than 1/2 inch (12.7 mm) in len
19、gth and including one-third to one-half the circumference of the tube shall withstand, without cracking, bending at room temperature through an angle of 180 around a diameter equal to the bend factor shown in Table 4 times the nominal wall thickness of the tubing with axis of bend parallel to axis o
20、f tube and with inside of tube on inside of bend. Table 4 - Bending parameters Nominal Wall Thickness Inch Nominal Wall Thickness Millimeters Factor Up to 0.120, incl Up to 3.05, incl 1 Over 0.120 to 0.238, incl Over 3.05 to 6.05, incl 2 Over 0.238 to 0.500, incl Over 6.05 to 12.70, incl 4 3.3.2 Res
21、ponse to Heat Treatment (-T62) Tubing shall have the properties shown in Table 5 after being solution and precipitation heat treated in accordance with AMS2772 to the -T62 temper (see ANSI H35.1). Table 5 Table 5A - Minimum tensile properties, inch/pound units Nominal Wall Thickness Inch Tensile Str
22、ength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 inches or 4D % Strip Elongation in 2 inches or 4D % Full Section 0.025 to 0.049, incl 42.0 35.0 8 10 Over 0.049 to 0.259, incl 42.0 35.0 10 12 Over 0.259 to 0.500, incl 42.0 35.0 12 14 SAE INTERNATIONAL AMS4079H Page 4 of 6 Table 5B - Minim
23、um tensile properties, SI units Nominal Wall Thickness Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % Strip Elongation in 50.8 mm or 4D % Full Section 0.64 to 1.24, incl 290 241 8 10 Over 1.24 to 6.58, incl 290 241 10 12 Over 6.58 to 12.70, incl 290
24、241 12 14 3.3.3 Mechanical property requirements for product outside the ranges covered by Tables 2, 3, 4 and 5 shall be agreed upon between purchaser and producer. 3.4 Quality Tubing, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and fro
25、m imperfections detrimental to usage of the tubing. Detrimental imperfections include, but are not limited to, cracks, folds, splits, seams, inclusions, or severe cross-hatching (surface breaks) that cannot be removed by light hand-sanding, using 180 grit or finer sandpaper. The requirements of 3.5
26、shall be met after sanding. 3.5 Tolerances Except as specified in 3.5.1 for mean diameter and 3.5.2 for wall thickness, tolerances shall conform to all applicable requirements of ANSI H35.2 or ANSI H.35.2M. 3.5.1 Mean Diameter Shall be shown in Table 6. Table 6 Table 6A - Tolerances, mean diameter,
27、inch/pound units Nominal OD Inches Tolerance, Inch Plus and Minus 0.500 to 1.000, incl 0.002 Over 1.000 to 3.000, incl 0.003 Over 3.000 to 5.000, incl 0.004 Over 5.000 to 6.000, incl 0.005 Over 6.000 to 8.000, incl 0.008 Over 8.000 to 10.000, incl 0.010 Over 10.000 to 12.000, incl 0.013 Table 6B - T
28、olerances, mean diameter, SI units Nominal OD Millimeters Tolerance, Millimeters Plus and Minus 12.70 to 25.40, incl 0.05 Over 25.40 to 76.20, incl 0.08 Over 76.20 to 127.00, incl 0.10 Over 127.00 to 152.40, incl 0.13 Over 152.40 to 203.20, incl 0.20 Over 203.20 to 254.00, incl 0.25 Over 254.00 to 3
29、04.80, incl 0.33 SAE INTERNATIONAL AMS4079H Page 5 of 6 3.5.1.1 Mean diameter is the average of two measurements taken at right angles to each other at the same longitudinal location on the tube. 3.5.2 Wall Thickness 7% or 0.002 inch (0.05 mm), whichever is greater, for wall thicknesses under 0.035
30、inch (0.89 mm); 7% or 0.003 inch (0.08 mm), whichever is greater, for wall thicknesses of 0.035 inch (0.89 mm) and over. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of tubing shall supply all samples for vendors tests and shall be responsible for the performance of a
31、ll required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the tubing conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties as annealed (3.3.1.1) and after so
32、lution heat treatment and aging (3.3.2.1), quality (3.4), and tolerances (3.5) are acceptance tests and, except for composition, shall be performed on each inspection lot. 4.2.2 Periodic Tests Flattening tests (3.3.1.2) are periodic tests and shall be performed at a frequency selected by the vendor
33、unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS2355 and as specified herein. 4.4 Reports The vendor of the product shall furnish with each shipment a report stating that the product conforms to the composition and tolerances and showing
34、 the results of tests to determine conformance to the other acceptance test requirements. This report shall include the product form, purchase order number, inspection lot number, AMS4079H, size, and quantity. The report shall also include the producer, producer lot number, and the size of the mill
35、product. 4.4.1 When the product size is outside the range covered by Tables 2, 3, 4, and 5, the report shall contain a statement to that effect. 4.5 Resampling and Retesting Shall be in accordance with AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B666/B666
36、M. SAE INTERNATIONAL AMS4079H Page 6 of 6 5.2 Packaging 5.2.1 Shall be prepared for shipment in accordance with ASTM B660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the tubing to ensure carrier acceptance and safe delivery. 6.
37、 ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Tubing not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 Revisi
38、on Indicator A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the
39、document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Hardness should not be lower than 85 HRE, or equivalent, determined in accordance with ASTM E18. Hardness has been used to verify that tubing
40、is properly processed, but an out-of-specification hardness number is not always indicative of product with out of specification tensile strength. Further analysis including material composition verification, heat treat process parameter review, and/or tensile property measurement on product with ou
41、t-of-range hardness may be necessary. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the prim
42、ary units and are presented only for information. 8.5 Purchase documents should specify not less than the following: AMS4079H Size of tubing desired Quantity of tubing desired 8.6 Similar Specifications Federal WW-T-700/6, Temper O, is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met. PREPARED BY AMS COMMITTEE “D”
