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 2012 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/AMS5570Q AEROSPACE MATERIAL SPECIFICATION AMS5570 REV. Q Issued 1939-12 Revised 2013-02 Super
5、seding AMS5570P Steel, Corrosion and Heat-Resistant, Seamless Tubing 18Cr - 11Ni - 0.40Ti (321) Solution Heat Treated (Composition similar to UNS S32100) RATIONALE AMS5570Q revises Tensile Properties (3.4.1, Table 2) and is a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This
6、specification covers a corrosion and heat-resistant steel in the form of seamless tubing. 1.2 Application This tubing has been used typically for parts requiring both corrosion and heat resistance, especially when such parts are welded during fabrication, and also for parts requiring oxidation resis
7、tance up to 1500 F (816 C), but useful at that temperature only when stresses are low, 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 he
8、rein. 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. SAE AMS5570Q Page 2 of 6 2.1 SAE Pu
9、blications Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2243 Tolerances, Corrosion and Heat-Resistant Steel Tubing AMS2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant S
10、teels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging Stock AMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and
11、Alloys, Sheet, Strip, Plate, and Aircraft Tubing 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 A 262 Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steel
12、s ASTM A 632 Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service ASTM A 370 Mechanical Testing of Steel Products ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys 3. TECHNICAL REQUIREMENTS 3.1 Com
13、position Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser. TABLE 1 - COMPOSITION Element min max Carbon Manganese Silicon Phosphorus Sulfur
14、 Chromium Nickel Titanium Molybdenum Copper Nitrogen - - 0.25 - - 17.00 9.00 5x(C+N) - - - 0.08 2.00 1.00 0.040 0.030 19.00 13.00 0.70 0.75 0.75 0.10 SAE AMS5570Q Page 3 of 6 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of AMS2248. 3.2 Condition Solution heat tr
15、eated and, unless solution heat treatment is performed in an atmosphere yielding a bright finish, descaled. 3.3 Fabrication Tubing shall be produced by a seamless process. Finishing operations for removal of surface blemishes shall be performed prior to final solution heat treatment. A light polish
16、to improve external surface appearance may be employed after solution heat treatment. 3.4 Properties Tubing shall conform to the following requirements; tensile testing shall be performed in accordance with ASTM A 370: 3.4.1 Tensile Properties Shall be as shown in Table 2. TABLE 2A - TENSILE PROPERT
17、IES, INCH/POUND UNITS Nominal OD Inch Wall Thickness Inch Tensile Strength Ksi1Yield Strength, min KSI 0.2% Offset2 Elongation in 2 inches %, min Strip Elongation in 2 inches %, min Full Tube Up to 0.188, incl Over 0.188 to 0.500, incl Over 0.500 Up to 0.016, incl Over 0.016 Up to 0.010, incl Over 0
18、.010 Up to 0.010, incl Over 0.010 75-120 75-105 75-115 75-105 75-120 75-105 30 3030 30 30 30 - - 30 30 25 30 33 35 35 35 30 35 TABLE 2B - TENSILE PROPERTIES, SI UNITS Nominal OD Millimeters Nominal Wall Thickness Millimeter Tensile Strength MPa1Yield Strength, min MPa 0.2% Offset2 Elongation in 50.8
19、 mm %, min Strip Elongation in 50.8 mm %, min Full Tube Up to 4.78, incl Over 4.78 to 12.70, incl Over 12.70 Up to 0.41, incl Over 0.41 Up to 0.25, incl Over 0.25 Up to 0.25, incl Over 0.25 517-827 517-724 517-793 517-724 517-827 517-724 207 207207 207 207 207 - - 30 30 25 30 33 35 35 35 30 35 1Mini
20、mum tensile properties have been taken from ASTM A 632, and have not been substantiated using the procedures of SAE/AMS Metals Division. 2. Yield strength is not required to be determined for OD sizes less than 0.125 inch (3.2 mm) or for wall thicknesses less than 0.015 inch (.38 mm). SAE AMS5570Q P
21、age 4 of 6 3.4.2 Flarability Specimens as in 4.3.1 shall withstand flaring at room temperature, without formation of cracks or other visible defects, by being forced axially with steady pressure over a hardened and polished tapered steel pin having a 74 degree included angle to produce a flare havin
22、g a permanent expanded OD not less than specified in 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 0.200 0.302 0.359 0.421 0.484 0.656 0.781 0.750 1.000 1.250 1.500 1.750 2.000
23、 0.937 1.187 1.500 1.721 2.106 2.356 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 5.08 7.67 9.12 10.69 12.29 16.66 19.84 19.05 25.40 31.75 38.10 44.45 50.80 23.80 30.15 38.1
24、0 43.71 53.49 59.84 3.4.2.1 Tubing with nominal OD between any two standard sizes given in Table 3 shall take the same percentage flare as that for the larger of the two sizes. 3.4.3 Susceptibility to Intergranular Attack Specimens from tubing, after sensitizing treatment, shall pass the intergranul
25、ar corrosion test performed in accordance with ASTM A 262, Practice E. After immersion, tubing shall not exhibit intergranular attack or cracks when tested in accordance with the following: 3.4.3.1 Examination of OD Surface Shall be performed after flattening a 1-inch (25-mm) long specimen to a tota
26、l thickness under load of three times the wall thickness. 3.4.3.2 Examination of ID Surface Shall be performed after splitting a 1-inch (25-mm) long specimen and folding the split specimen, with ID surfaces on the outside of fold, around a mandrel having a diameter equal the nominal wall thickness o
27、f the tube. 3.4.3.2.1 Tubing Over 0.625-inch (15.88-mm) in OD The axis of the fold shall be parallel to the axis of the tube. SAE AMS5570Q Page 5 of 6 3.4.3.2.2 Tubing 0.625-inch (15.88-mm) and Under in OD The axis of the fold shall be either parallel or transverse to the axis of the tube. 3.5 Quali
28、ty Tubing, as received by purchaser, shall be uniform 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, and other imperfec
29、tions detrimental to usage of the tubing. Surface imperfections, such as handling marks, straightening marks, light mandrel and die marks, shallow pits, and scale pattern will not be considered injurious if the imperfections are removable within the tolerances specified for wall thickness, but remov
30、al of such imperfections is not required. 3.6 Tolerances Shall conform to all applicable requirements of AMS2243. 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 all requ
31、ired 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 (3.4.1), and tolerances (3.6) are accepta
32、nce tests and shall be performed on each heat or lot as applicable. 4.2.2 Periodic Tests Flarability (3.4.2) and susceptibility to intergranular attack (3.4.3) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.3 S
33、ampling and Testing Shall be in accordance with AMS2371 and the following: 4.3.1 Specimens for flarability test (3.4.2) 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 free from burrs, but not rounded. 4.4 Reports
34、 The vendor of tubing shall furnish with each shipment a report showing the results of tests for composition of each heat and for tensile properties of each lot and stating that the tubing conforms to the other technical requirements. This report shall include the purchase order number, heat and lot
35、 numbers, AMS5570Q, size, and quantity. 4.5 Resampling and Retesting Shall be in accordance with AMS2371. SAE AMS5570Q Page 6 of 6 5. PREPARATION FOR DELIVERY 5.1 Sizes Except when exact lengths or multiples of exact lengths are ordered, straight tubes will be acceptable in mill lengths of 6 to 20 f
36、eet (1.8 to 6.1 m) but not more than 10% of any shipment shall be supplied in lengths shorter than 10 feet (3 m). 5.2 Identification Shall be in accordance with AMS2807. 5.3 Packaging Tubing shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules
37、 and regulations pertaining to the handling, packaging, 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
38、Tubing not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (|) 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 th
39、e previous issue of this document. 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 Terms used in AMS are
40、clarified in ARP1917. 8.3 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 primary units and are presented only for information. 8.4 Purchase d
41、ocuments should specify not less than the following: AMS5570Q Size of tubing desired Quantity of tubing desired. 8.5 Similar Specifications MIL-T-8606, Type I, Composition 321, 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 “F”
