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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this publication m
3、ay 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: +1 724-776-4970 (outside U
4、SA) 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/AMS5569B AEROSPACE MATERIAL SPECIFICATION AMS5569 REV. B Issued 1993-07 Reaffirmed 2006-04 Re
5、vised 2011-07 Superseding AMS5569A Steel, Corrosion and Heat Resistant, Seamless and Welded Hydraulic Tubing 19Cr - 9.5Ni - 0.03C max Cold Drawn, 1/8 Hard Temper (Composition similar to UNS S30403) RATIONALE AMS5569B revises referenced documents and is a Five Year Review and update of this specifica
6、tion. 1. SCOPE 1.1 Form This specification covers a corrosion and heat resistant steel in the form of two types of thin-wall, close-tolerance tubing 0.125 to 2.00 inches (3.18 to 50.8 mm), inclusive, in nominal OD. 1.2 Application This tubing has been used typically in high pressure hydraulic or pne
7、umatic systems assembled with brazed joints, but usage is not limited to such applications. 1.3 Classification The tubing covered by this specification is classified as follows: Class 1 - Seamless and Drawn Class 2 - Welded and Drawn 1.3.1 Unless a specific class is ordered, either class may be supp
8、lied. 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 supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the refer
9、enced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. SAE AMS5569B Page 2 of 8 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA an
10、d Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrou
11、ght Products and Forging Stock AMS2700 Passivation of Corrosion Resistant Steels AMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft Tubing 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Driv
12、e, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM A 262 Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels ASTM A 370 Mechanical Testing of Steel Products ASTM E 112 Determining Average Grain Size ASTM E 353 Chemical Analysis of St
13、ainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys ASTM E 426 Electromagnetic (Eddy Current) Examination of Seamless and Welded Tubular Products, Austenitic Stainless Steel and Similar Alloys ASTM E 1417 Liquid Penetrant Testing 2.3 ANSI Publications Available from Amer
14、ican National Standards Institute, Inc., 25 West 43rdStreet, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ANSI B46.1 Surface Texture 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance wi
15、th ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser. SAE AMS5569B Page 3 of 8 TABLE 1 - COMPOSITION Element min max Carbon Manganese Silicon Phosphorus Sulfur Chromium Nickel Molybdenum Copper - - - - - 18.0 8.0 - - 0.03 2.00 1.00 0.04 0.03 20.0 11.0 0.5
16、0 0.75 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of AMS2248. 3.2 Condition Solution heat treated, cold drawn, pickled as required, and passivated. 3.3 Fabrication 3.3.1 Class 1 Tubing shall be produced by a seamless process. 3.3.2 Class 2 Tubing shall be prod
17、uced by the gas-metal-arc, gas-tungsten-arc, or plasma arc process and subsequently drawn. Tubing shall contain no more than one longitudinal weld and no circumferential welds. Tubing shall be processed to remove any dimensional indication of the presence of welds. 3.3.3 Tensile properties shall be
18、obtained by cold working and not by heat treatment. A minimum reduction of 30 percent is recommended for Class 2 tubing. 3.3.4 The external and internal surface finishes shall not be rougher than 32 microinches (0.8 m) and 63 microinches (1.6 m) respectively, determined in accordance with ANSI B 46.
19、1, and may be produced by any method yielding the specified surface condition that will not affect limits of wall thickness or corrosion resistance, with the exception that grinding is not acceptable. A light polish to improve surface appearance may be employed. 3.4 Properties Tubing shall conform t
20、o the following requirements; tensile and bend testing shall be performed in accordance with ASTM A 370: 3.4.1 Tensile properties shall be as shown in Table 2 and 3.4.1.1. TABLE 2 - TENSILE PROPERTIES Property Value Tensile Strength Yield Strength at 0.2% Offset Elongation, minimum Full Section Stri
21、p 105 - 140 ksi (724 - 965 MPa) 75 - 100 ksi (517 - 689 MPa) 20% 15% SAE AMS5569B Page 4 of 8 3.4.1.1 Tubing under 0.50 inch (12.7 mm) in nominal OD, and having wall thickness of 0.02 inch (0.5 mm) or under, may have elongation as low as 16% when tested in full section. 3.4.2 Bending Tubes shall sho
22、w no evidence of cracking or splitting when bent cold around a suitable mandrel of diameter equal to the bend factor shown in Table 3 times the nominal OD. During test, flattening shall not exceed 5 percent of the minimum OD. An appropriate internal mandrel may be used. For Class 2 tubing, the weld
23、shall be at the outside of the bend. A suitable etchant may be used to locate the weld. TABLE 3 - BENDING PARAMETERS Nominal OD Inches Nominal OD Millimeters Bend Factor 0.25 to 1.00, incl Over 1.00 to 1.75, incl Over 1.75 to 2.00, incl 6.4 to 25.4, incl Over 25.4 to 44.5, incl Over 44.5 to 50.8, in
24、cl 3 4 5 3.4.2.1 Flattening during testing is defined in Equation 1. % Flatteningmax OD min OD()nominal OD- 100=(Eq. 1) 3.4.3 Susceptibility to Intergranular Attack Tubing shall pass the copper-copper sulfate-sulfuric acid test of ASTM A 262, Practice E. Samples shall be taken from tubing after fina
25、l annealing prior to cold working. 3.4.4 Average Grain Size Shall be ASTM No. 6 or finer, determined in accordance with ASTM E 112. In case of dispute, the Heyn Intercept method of ASTM E 112 shall be used. 3.4.5 Passivity Surfaces shall show no reactions indicating active surfaces when subjected to
26、 either the copper sulfate test or the potassium ferrocyanide-nitric acid test defined in AMS2700, Annex A. 3.4.6 Pressure Resistance When specified, tubing shall withstand for not less than 1 minute, an internal hydrostatic pressure (P) as defined below, or 15.0 ksi, whichever is less. There shall
27、not be any leaking or developing bulges, pinholes, cracks, or other defects except that a diametric permanent set not exceeding 0.002 inch/inch (0.002 mm/mm) is permissible. P shall be determined from Equation 2. PSD2d2()D2d2+()-=(Eq. 2) where: P = Test pressure in ksi (MPa) S = 75 ksi (517 MPa) yie
28、ld strength D = Nominal OD (nominal OD plus tolerance) d = Nominal ID (D minus twice minimum wall thickness) SAE AMS5569B Page 5 of 8 3.4.7 Flarability Tubing shall withstand flaring at room temperature, without the formation of cracks or other visible defects, by being forced axially with steady pr
29、essure 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 shown in Table 4. TABLE 4A - MINIMUM FLARABILITY, INCH/POUND UNITS Nominal OD Inches Expanded OD Inches Nominal ODInches Expanded OD Inches 0.250 0.
30、312 0.375 0.500 0.625 0.359 0.421 0.484 0.656 0.781 0.750 1.000 1.250 1.500 1.750 2.000 0.937 1.187 1.500 1.721 2.106 2.356 TABLE 4B - MINIMUM FLARABILITY, SI UNITS Nominal OD Millimeters Expanded OD Millimeters Nominal ODMillimeters Expanded OD Millimeters 6.35 7.92 9.52 12.50 15.88 9.12 10.69 12.2
31、9 16.66 19.84 19.05 25.40 31.75 38.10 44.45 50.80 23.80 30.15 38.10 43.71 53.49 59.84 3.4.7.1 Tubing with nominal OD between any two standard sizes given in Table 4 shall take the same percentage flare as shown for the larger of the two sizes. 3.5 Quality Tubing, as received by purchaser, shall be u
32、niform in quality and condition and shall have a finish conforming to the best practice for high quality aircraft tubing. It shall be smooth and free from heavy scale or oxide, burrs, seams, tears, grooves, laminations, slivers, pits, or other imperfections detrimental to usage of the tubing. 3.5.1
33、Mechanically-induced isolated minor surface imperfections, such as handling marks, straightening marks, light mandrel or die marks, shall not exceed the values shown in Table 5. TABLE 5A - MAXIMUM DEPTH OF DISCONTINUITY, INCH/POUND UNITS Nominal Wall Thickness Inch Depth of Discontinuity Inch Up to
34、0.020, incl Over 0.020 to 0.030, incl Over 0.030 to 0.040, incl Over 0.040 to 0.074, incl 10% of nominal wall thickness 0.002 0.0025 0.003 SAE AMS5569B Page 6 of 8 TABLE 5B - MAXIMUM DEPTH OF DISCONTINUITY, SI UNITS Nominal Wall Thickness Millimeters Depth of Discontinuity Millimeter Up to 0.51, inc
35、l Over 0.51 to 0.76, incl Over 0.76 to 1.02, incl Over 1.02 to 1.88, incl 10% of nominal wall thickness 0.05 0.064 0.08 3.5.1.1 Discontinuities having large root radii plainly visible to the unaided eye, whose surfaces blend into the nominal tubing surfaces, and whose depths do not exceed the maximu
36、m depth of acceptable discontinuity or violate wall thickness tolerances, are acceptable. Other surface discontinuities shall be removed by polishing or buffing within the limits of wall thickness tolerances or maximum depth of acceptable discontinuity. 3.5.2 Tubing shall be free from grease or othe
37、r foreign matter. Metallic flakes or particles shall not be collected by a clean white cloth or wad of cotton drawn through the length of the bore of a test sample. Discoloration of the cloth or wad of cotton, without the presence of flakes or particles, is acceptable. 3.5.3 When standards for accep
38、tance are specified by purchaser, tubing shall be subjected to fluorescent penetrant testing in accordance with ASTM E 1417. 3.5.4 Class 1 tubing shall be eddy current inspected in accordance with ASTM E 426 using calibration notches specified in ASTM A 450 except that the standard used shall contai
39、n simulated flaws not greater than those shown in Table 5 of this specification. 3.5.5 Class 2 tubing shall be subjected to ultrasonic inspection in accordance with AMS2634, Class A1. 3.6 Tolerances Shall conform to all applicable requirements of AMS2243, as applicable to half tolerances. 4. QUALITY
40、 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 all required tests. Purchaser reserves the right to sample and to perform any confirmation testing deemed necessary to ensure that t
41、he tubing conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), surface finish (3.3.4), tensile properties (3.4.1), bending (3.4.2), average grain size (3.4.4), flarability (3.4.7), quality (3.5), eddy current inspection (3.5.4), ultrasonic inspect
42、ion (3.5.5), and tolerances (3.6) are acceptance tests and shall be performed on each heat, lot, or tube as applicable. 4.2.2 Periodic Tests Susceptibility to intergranular attack (3.4.3), passivity (3.4.5), and pressure resistance (3.4.6) are periodic tests and shall be performed at a frequency sel
43、ected by the vendor unless frequency of testing is specified by purchaser. SAE AMS5569B Page 7 of 8 4.3 Sampling and Testing Shall be in accordance with AMS2371 and the following; a lot shall be all tubing of the same class and of one size, made from one heat of steel, and manufactured and presented
44、 for vendors inspection at one time: 4.3.1 Each tube shall be tested for flarability. The end of the tube shall be cut square with the tube end smooth and free from burrs, but not rounded. Flared ends need not be removed after test. 4.3.2 When a pressure resistance test is specified, the unsupported
45、 length shall be not less than 2 feet (0.6 m) or six times the nominal OD, whichever is greater. 4.3.3 Each length of tubing shall be visually examined for compliance to surface condition (3.2) and quality (3.5). 4.3.4 Sampling for dimensional tolerances shall be as shown in Table 6. The tubing shal
46、l be measured at three orientations, 60 degrees apart, at one end of each tube. TABLE 6 - SAMPLING FOR DIMENSIONAL TOLERANCES Lot Size Sample Size 1 to 3 All 4 to 25 4 26 to 65 6 66 to 180 13 181 to 300 20 301 to 800 32 Over 800 50 4.3.4.1 If any tube fails to meet dimensional requirements, the enti
47、re lot shall be inspected at both ends of each tube. 4.3.5 Average Grain Size and Bending Shall be determined on at least one section of tube from each lot. 4.4 Reports The vendor of the product shall furnish with each shipment a report showing the results of tests for composition of each heat and f
48、or tensile properties and average grain size of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5569B, class of tubing, size, and quantity. 4.5 Resampling and Retesting Shall be in acco
49、rdance with AMS2371, except that should any specimen fail to meet the bend test requirements, disposition of the lot may be based on the results of testing three additional specimens for each nonconforming specimen. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the tubes represented. Results of all test
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