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 ther
2、efrom, 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
3、publication 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: +1 724-776-49
4、70 (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/AMS4071N AEROSPACE MATERIAL SPECIFICATION AMS4071 REV. N Issued 1945-05 Revised 2017-02Superse
5、ding AMS4071M Aluminum Alloy, Drawn, Round, Seamless Hydraulic Tubing 2.5Mg 0.25Cr (5052-O) Annealed (Composition similar to UNS A95052) RATIONALE AMS4071N revises Properties (3.3.4), Quality (3.4.3.2) and Reports (4.4.1), and is a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form
6、 This specification covers an aluminum alloy in the form of drawn, round seamless tubing having a wall thickness of 0.010 to 0.450 inch (0.25 to 11.43 mm) inclusive, and nominal outside diameters of 0.125 to 3.000 inch (3.18 to 76.2 mm), inclusive (see 8.5). 1.2 Application This tubing has been used
7、 typically for parts, such as hydraulic systems and fuel and oil lines, but usage is not limited to such applications. SAE INTERNATIONAL AMS4071N Page 2 of 6 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
8、 the 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 Pub
9、lications 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. AMS2355 Quality Assurance, Sampling and Testing, Aluminum Alloys and Magnesium Alloy, Wrought Products (Except Forgi
10、ng Stock), and Rolled, Forged, or Flash Welded Rings ARP1917 Clarification of Terms Used in Aerospace Metals Specifications AS4330 Tubing, Flared, Standard Dimensions For, Design Standard AS33583 Tubing End Double Flare, Standard Dimensions For 2.2 ASTM Publications Available from ASTM International
11、, 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 Identification Marking of Aluminum and Magnesium Alloy Products ASTM E215 Standardizing Equipment for Electromagnet
12、ic Testing of Seamless Aluminum- Alloy Tube 2.3 ANSI 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. TECHNICAL REQUIREMENTS 3
13、.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 Iron Copper Manganese Magnesium Chromium Zinc Other Elements, each Other Elements, total Aluminum - - - - 2.2 0.15 - - - remainder 0.25 0.4
14、0 0.10 0.10 2.8 0.35 0.10 0.05 0.15 SAE INTERNATIONAL AMS4071N Page 3 of 6 3.2 Condition Annealed. 3.2.1 Tubing shall be supplied unground with an as-drawn surface finish, unless otherwise specified. 3.3 Properties Tubing shall conform to the following requirements, determined in accordance with AMS
15、2355 on the mill produced size. 3.3.1 Tensile Properties Shall be as shown in Table 2 for tubing having nominal wall thickness of 0.010 to 0.450 inch (0.25 to 11.43 mm), inclusive. Table 2 - Tensile properties Property ValueTensile Strength Yield Strength at 0.2% Offset, minimum 25.0 to 35.0 ksi (17
16、2 to 241 MPa) 10.0 ksi (68.9 MPa) 3.3.1.1 Mechanical property requirements for product outside of the ranges covered by 3.3.1 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,
17、flattening sideways under a load applied gradually at room temperature until the outside dimension under load is equal to 3 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-t
18、hird 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 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 Flarab
19、ility Tubing with a nominal OD of 0.125 to 0.312 inch (3.18 to 7.92 mm) and wall 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 being double-flared (see 8.3),
20、and tubing with nominal OD over 0.375 inch (9.52 mm) shall withstand being single-flared without formation of cracks or other visible defects by being forced axially, at room temperature, with steady pressure over a hardened and polished tapered steel pin having a 74 included angle to produce a flar
21、e having a permanent expanded OD not less than specified in Table 3. Table 3 Table 3A - Minimum 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 0.224 0.302 0.359 0.421 0.484 0.656 0.781 0.937 1.000 1.
22、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 SAE INTERNATIONAL AMS4071N Page 4 of 6 Table 3B - Minimum 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 5.69 7.
23、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 Tubing with nominal OD between any two standard sizes shown in Table 3 shall take the same percentage flare as shown for the larger of the two sizes. 3.3.4 Hydraulic Stre
24、ngth Tubing shall withstand an internal hydrostatic pressure (P), based on Equation 1, without developing leaks and without an increase in mean diameter of more than 0.2% 2222DdPSDd(Eq. 1)where: S= minimum Yield Strength (10.0 ksi (68.9 MPa) D= maximum OD (nominal OD plus tolerance) d= maximum ID (D
25、 minus twice the minimum wall thickness) 3.3.4.1 Mean diameter is the average of two diameters at right angles to each other in the same transverse plane; measurements before and after testing should be taken at substantially the same location. 3.4 Quality Tubing, as received by purchaser, shall be
26、uniform in quality and condition, sound, and free from foreign materials and from internal and external imperfections detrimental to usage of the tubing. 3.4.1 A polished and etched cross-section of a tube shall show no evidence of detrimental imperfections when examined at 100X magnification. 3.4.2
27、 Detrimental imperfections include, but are not limited to, cracks, 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 shall be met after any sanding. 3.4.3 Leak Test Each lengt
28、h of tubing shall be tested for leaks in accordance with either 3.4.3.1 or 3.4.3.2; the method of test shall be at the option of the vendor unless purchaser specifies the method of test. 3.4.3.1 Immersion Test A tube, immersed in water or other suitable liquid while an air pressure of 250 psi (1724
29、kPa) is applied to the inside of the tube and held for not less than 5 seconds, shall show no leakage as indicated by bubbles in the immersion fluid. SAE INTERNATIONAL AMS4071N Page 5 of 6 3.4.3.2 Eddy Current Test Secondary reference standards in accordance with ASTM E215 shall be used to set thres
30、hold levels. 3.4.3.2.1 If Method A of ASTM E215 is used to establish secondary standards, tubes exhibiting eddy current responses smaller than those obtained from the db holes are acceptable. Tubes exhibiting eddy current responses equivalent to or greater than those obtained from the db holes in th
31、e reference standard are not acceptable. 3.4.3.2.2 If Method B of ASTM E215 is used to establish secondary standards, and the alarm level is set as specified in ASTM E215, Method B, tubes exhibiting eddy current responses which trigger the alarm are not acceptable. 3.4.3.2.3 Reference standard dimen
32、sions and acceptance criteria for tubes outside the dimensions specified in ASTM E215 shall be agreed upon between purchaser and producer. 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 v
33、endor of tubing shall supply all samples for vendors tests and 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 Classificat
34、ion of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1), leak test (3.4.3), 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), flarability (3.3.3), and hydraulic strength
35、 (3.3.4) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency 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 shall be full tubes or sections cut fro
36、m a tube. The end of the specimen to be flared shall be cut square, with the cut end smooth and free from burrs but, except for sizes 0.375 inch (9.52 mm) and under, in nominal diameter, not rounded. 4.4 Reports The vendor of tubing shall furnish with each shipment a report stating that the tubing c
37、onforms to the composition and showing the numerical results of tests to determine conformance to the other acceptance test requirements. This report shall include the purchase order number, inspection lot number, AMS4071N, size, and quantity. The report shall also include the producer and the size
38、of the mill product. 4.4.1 When the product size 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. SAE INTERNATIONAL AMS4071N Page 6 of 6 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be
39、in accordance with ASTM B666/B666M. 5.2 Packaging 5.2.1 Tubing shall be coated, 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, pack
40、aging, and transportation of the tubing to ensure carrier acceptance and safe delivery. 6. 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 t
41、o modifications authorized by purchaser, 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 docum
42、ent. An (R) symbol to the left of 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
43、 except that the flare is folded back on itself such that the cut edge is inside the flare near the ID of the tube. Definitions and illustration of single flaring are shown in AS4330; double flaring is defined and illustrated in AS33583. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions
44、 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 primary units and are presented only for information. 8.5 Purchase documents should specify not less tha
45、n the following: AMS4071N Size of 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”
