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 2015 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:/www.sae.org/technical/standards/AMS4070N AEROSPACE MATERIAL SPECIFICATION AMS4070 REV. N Issued 1940-10 Reaffirme
5、d 2006-04 Revised 2015-12 Superseding AMS4070M Aluminum Alloy, Drawn, Round Seamless Tubing 2.5Mg - 0.25Cr (5052-O) Annealed (Composition similar to UNS A95052) RATIONALE AMS4070N revises Properties (3.3.1.1) and Reports (4.4.1) and is a Five Year Review and update of this specification. 1. SCOPE 1.
6、1 Form This specification covers an aluminum alloy in the form of drawn, round seamless tubing with wall thicknesses of 0.010 to 0.450 inch (0.25 to 11.43 mm), inclusive. 1.2 Application This tubing has been used typically for parts, such as brackets, conduits, and low-pressure fluid lines, requirin
7、g good weldability, moderate strength, and good resistance to corrosion, 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 the extent specified herein. The supp
8、lier 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 Publications Available from SAE Internati
9、onal, 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. AMS2355 Quality Assurance, Sampling and Testing, Aluminum Alloys and Magnesium Alloy, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash
10、 Welded Rings SAE INTERNATIONAL AMS4070N Page 2 of 5 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. 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 Identi
11、fication Marking of Aluminum and Magnesium Products 2.3 ANSI Accredited Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECH
12、NICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight as shown in Table 1, determined in accordance with AMS2355. Table 1 - Composition Element min max Silicon Iron Copper Manganese Magnesium Chromium Zinc Other Elements, each Other Elements, total Aluminum - - - - 2.2 0.15 -
13、 - - remainder 0.25 0.40 0.10 0.10 2.8 0.35 0.10 0.05 0.15 3.2 Condition Annealed. 3.3 Properties Tubing shall conform to the following requirements, determined on the mill product in accordance with AMS2355: 3.3.1 Tensile Properties Shall be shown in Table 2 for tubing having nominal wall thickness
14、 of 0.010 to 0.450 inch (0.25 to 11.43 mm), inclusive. Table 2 - Tensile properties Property Value Tensile Strength Yield Strength at 0.2% Offset, min 25.0 to 35.0 ksi (172 to 241 MPa) 10.0 ksi (68.9 MPa) SAE INTERNATIONAL AMS4070N Page 3 of 5 3.3.1.1 Mechanical property requirements for product out
15、side of the range covered by 1.1 shall be agreed upon between purchaser and producer. 3.3.2 Flattening Tubing having nominal wall thickness less than 10% of the nominal OD shall withstand, without cracking, flattening sideways under a load applied gradually at room temperature until the outside dime
16、nsion under load is equal to three times the nominal wall thickness. 3.3.2.1 If tubing does not pass the flattening test of 3.3.2, a section of tube not less than 1/2 inch (12.7 mm) in length and embracing one-third to one-half the circumference of the tube shall withstand, without cracking, bending
17、 at room temperature through an angle of 180 degrees around a diameter equal to the nominal wall thickness of the tubing with axis of bend parallel to axis of tube and with inside of tube on inside of bend. 3.3.3 Flarability Tubing with a nominal OD of 0.125 to 0.312 inch (3.18 to 7.92 mm) and wall
18、thickness up to 0.035 inch (0.89 mm) and tubing with a nominal OD of 0.313 to 0.375 inch (7.95 to 9.52 mm) and nominal wall thickness not greater than 0.049 inch (1.24 mm) shall withstand double-flaring (see 8.2), and tubing with nominal OD over 0.375 inch (9.52 mm) shall withstand single-flaring wi
19、thout formation of cracks or other visible defects by being forced, at room temperature, axially with steady pressure over a hardened and polished tapered steel pin having a 74 degree included angle to produce a flare having a permanent expanded OD not less than specified in Table 3. Table 3A - Mini
20、mum flarability, inch/pound units Nominal OD Inch Expanded OD Inch Nominal OD Inches Expanded OD Inches 0.125 0.188 0.250 0.312 0.375 0.500 0.625 0.750 0.200 0.302 0.359 0.421 0.484 0.656 0.781 0.937 1.000 1.250 1.500 1.750 2.000 2.500 3.000 1.187 1.500 1.721 2.106 2.356 2.856 3.356 Table 3B - Minim
21、um flarability, SI units Nominal OD Millimeters Expanded OD Millimeters Nominal OD Millimeters Expanded OD Millimeters 3.18 4.78 6.35 7.92 9.52 12.70 15.88 19.05 5.08 7.67 9.12 10.69 12.29 16.66 19.84 23.80 25.40 31.75 38.10 44.45 50.80 63.50 76.20 30.15 38.10 43.71 53.49 59.84 72.54 85.24 3.3.3.1 T
22、ubing with nominal OD between any two standard sizes shown in Table 2 shall take the same percentage flare as shown for the larger of the two sizes. 3.4 Quality Tubing, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections
23、detrimental to usage of the tubing. SAE INTERNATIONAL AMS4070N Page 4 of 5 3.5 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of tubing shall supply all samples for producers tests a
24、nd shall be responsible for the performance of all 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), tensi
25、le properties (3.3.1), and tolerances (3.5) are acceptance tests and, except for composition, shall be performed on each inspection lot. 4.2.2 Periodic Tests Flattening (3.3.2) and flarability (3.3.3) are periodic tests and shall be performed at a frequency selected by the producer unless frequency
26、of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS2355 and the following: 4.3.1 Specimens for flarability test (3.3.3) shall be full tubes or sections cut from a tube. The end of the specimen to be flared shall be cut square, with the cut end smooth and fr
27、ee from burrs, but, except for sizes 0.375 inch (9.52 mm) and under in nominal diameter, not rounded. 4.4 Reports The producer of tubing shall furnish with each shipment a report stating that the product conforms to the chemical composition and tolerances, and showing the numerical results of tests
28、on each inspection lot to determine conformance to the other acceptance test requirements. This report shall include the purchase order number, inspection lot number(s), AMS4070N, size, and quantity. The report shall also identify the producer, the product form, and the size of the mill product. 4.4
29、.1 When product is outside the range covered by 1.1, 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/B666M. 5.2 Packaging 5.2.1 Tubing shall be
30、oiled, prior to shipment, with a light corrosion-inhibiting oil. 5.2.2 Tubing 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 s
31、afe delivery. SAE INTERNATIONAL AMS4070N Page 5 of 5 6. ACKNOWLEDGMENT A producer 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 pur
32、chaser, will be subject to rejection. 8. NOTES 8.1 Revision 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
33、 the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 A double flare is similar to a standard single flare except that the flare is folded
34、back on itself such that the cut edge is inside the flare near the ID of the tube. Definitions and illustration of single flaring is shown in MS33584; double flaring is defined and illustrated in MS33583. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound uni
35、ts and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.5 Purchase documents should specify not less than the following: AMS4070N Size of
36、 tubing desired Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the range listed in 1.1 Quantity of tubing desired. 8.6 Similar Specifications Federal WW-T-700/4, 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”
