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/AMS5520G AEROSPACE MATERIAL SPECIFICATION AMS5520 REV. G Issued 1959-06 Revised 2
5、009-07 Reaffirmed 2015-05 Superseding AMS5520F Steel, Corrosion and Heat-Resistant, Sheet, Strip, Foil, and Plate 15Cr - 7.1Ni - 2.5Mo - 1.1AI Solution Heat Treated, Precipitation Hardenable (Composition similar to UNS S15700) RATIONALE AMS5520G revised 3.4.1.3 for bending, and has been subsequently
6、 reaffirmed to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification covers a corrosion and heat-resistant steel in the form of sheet, strip, foil, and plate. 1.2 Application These products have been used typically for parts requiring corrosion resistance and high strengt
7、h up to 600 F (316 C) and where such parts may require welding during fabrication, but usage is not limited to such applications. 1.2.1 Certain design and processing procedures may cause these products to become susceptible to stress-corrosion cracking; ARP1110 recommends practices to minimize such
8、conditions. 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 supplied herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the
9、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 International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776
10、-4970 (outside USA), www.sae.org. AMS2242 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Sheet, Strip, and Plate AMS2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys
11、 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 Alloys, Sheet, Strip, Plate, and Aircraft Tubing (Continued) AS4194 Sheet a
12、nd Strip Surface Finish Nomenclature ARP1110 Minimizing Stress Corrosion Cracking in Wrought Forms of Steels and Corrosion Resistant Steels and Alloys 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, w
13、ww.astm.org. ASTM A 370 Mechanical Testing of Steel Products ASTM A 480/A 480M Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip ASTM E 290 Bend Testing of Material for Ductility ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nick
14、el-Iron Alloys ASTM E 384 Microindentation Hardness of Materials 3. TECHNICAL REQUIREMENTS 3.1 Composition 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 accepta
15、ble to purchaser. TABLE 1 - COMPOSITION Element min max Carbon - 0.09 Manganese - 1.00 Silicon - 1.00 Phosphorus - 0.040 Sulfur - 0.030 Chromium 14.00 16.00 Nickel 6.50 7.75 Molybdenum 2.00 3.00 Aluminum 0.75 1.50 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of
16、AMS2248. 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Sheet and Strip Cold rolled, solution heat treated, and, unless solution heat treatment is performed in an atmosphere yielding a bright finish, descaled having a surface appearance comparable to the following comm
17、ercial corrosion-resistant steel finishes as described in ASTM A 480/A 480M and AS4194, and 3.2.1.1 or 3.2.1.2 as applicable. 3.2.1.1 Sheet No. 2D finish. SAE INTERNATIONAL AMS5520G Page 2 of 7_ 3.2.1.2 Strip No. 1 strip finish. 3.2.2 Plate Hot rolled, solution heat treated, and descaled. 3.3 Soluti
18、on Heat Treatment The product shall be solution heat treated by heating to a temperature within the range 1925 to 1975 F (1052 to 1079 C), holding at the selected temperature for a time commensurate with thickness and the heating equipment and procedure used, and cooling at a rate equivalent to an a
19、ir cool or faster. 3.4 Properties Product 0.0015 inch (0.038 mm) and over in nominal thickness shall conform to the following requirements. Tensile and hardness testing shall be performed in accordance with ASTM A 370. 3.4.1 As Solution Heat Treated 3.4.1.1 Tensile Properties Shall be shown in Table
20、 2. TABLE 2A - TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness Inches Tensile Strength ksi, max Yield Strength at 0.2% Offset ksi, max Elongation In 2 Inches or 4D %, min 0.0015 to 0.005, excl 165 - 15 0.005 and over 150 65 25 TABLE 2B - TENSILE PROPERTIES, SI UNITS Nominal Thickness Millimet
21、ers Tensile Strength MPa, max Yield Strength at 0.2% Offset MPa, max Elongation In 50.8 mm or 4D %, min 0.038 to 0.13, excl 1138 - 15 0.13 and over 1034 448 25 3.4.1.2 Hardness Shall be not higher than 100 HRB, or equivalent (See 8.2); for thin gages where superficial hardness testing is impractical
22、, microhardness testing in accordance with ASTM E 384 may be used. Product shall not be rejected on the basis of hardness if the tensile properties of 3.4.1.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness or from another sample with similar no
23、nconforming hardness. SAE INTERNATIONAL AMS5520G Page 3 of 7_ 3.4.1.3 Bending Product shall be tested in accordance with ASTM E 290, using a sample prepared nominally 0.75 inch (19.0 mm) in width, with the axis of bending parallel to the direction of rolling, and shall withstand, without cracking, w
24、hen bending at room temperature through the angle shown in Table 3 around a diameter equal to the bend factor times the nominal thickness of the product. In case of dispute, the results of tests using the guided bend test of ASTM E 290 shall govern. TABLE 3 - BENDING PARAMETERS Nominal Thickness Inc
25、h Nominal Thickness Millimeters Angle deg, min Bend Factor 0.0015 to 0.1874, incl 0.038 to 4.76, incl 180 1 Over 0.1874 to 0.275, incl Over 4.76 to 6.99, incl 180 3 3.4.2 Response to Austenite Conditioning and Precipitation Heat Treatment The product shall have the following properties after being a
26、ustenite conditioned by heating to 1400 F 25 (760 C 14), holding at heat for 90 minutes 5, cooling to 55 F 5 (13 C 3) within 60 minutes, holding at that temperature for not less than 30 minutes, and precipitation heat treated by heating to 1050 F 10 (566 C 6), holding at heat for 90 minutes 5, and c
27、ooling to room temperature: 3.4.2.1 Tensile Properties Shall be shown in Table 4. TABLE 4A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness Inch Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or 4D % 0.0015 to 0.005, excl 190 170 2 0.005 to 0.010, excl
28、190 170 3 0.010 to 0.020, excl 190 170 4 0.020 to 0.1875, excl 190 170 5 0.1875 to 0.500, incl 190 170 6 TABLE 4B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % 0.038 to 0.13, excl 1310 1172 2
29、0.13 to 0.25, excl 1310 1172 3 0.25 to 0.51, excl 1310 1172 4 0.51 to 4.763, excl 1310 1172 5 4.763 to 12.70, incl 1310 1172 6 3.4.2.2 Hardness Shall be not lower than 40 HRC, or equivalent (See 8.2); for thin gages where superficial hardness testing is impractical, microhardness testing in accordan
30、ce with ASTM E 384 may be used. Product shall not be rejected on the basis of hardness if the tensile properties of 3.4.2.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness or from another sample with similar nonconforming hardness. SAE INTERNATI
31、ONAL AMS5520G Page 4 of 7_ 3.4.3 Response to Austenite Conditioning, Sub-Zero Transformation, and Precipitation Heat Treatment The product shall have the following properties after being austenite conditioned by heating to 1750 F 25 (954 C 14), holding at heat for not less than 10 minutes, rapidly c
32、ooling to room temperature, sub-zero transformed by cooling to -100 F 10 (-73 C 6), holding at that temperature for not less than 8 hours, warming in air to room temperature, and precipitation heat treated by heating to 950 F 10 (510 C 6), holding at heat for 60 minutes 5, and cooling to room temper
33、ature: 3.4.3.1 Tensile Properties Shall be shown in Table 5. TABLE 5A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness Inch Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or 4D % 0.0015 to 0.005, excl 225 200 1 0.005 to 0.010, excl 225 200 2 0.010 to 0.
34、020, excl 225 200 3 0.020 to 0.1875, excl 225 200 4 0.1875 to 0.500, incl 225 200 5 TABLE 5B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % 0.038 to 0.13, excl 1551 1379 1 0.13 to 0.25, excl 15
35、51 1379 2 0.25 to 0.51, excl 1551 1379 3 0.51 to 4.763, excl 1551 1379 4 4.763 to 12.70, incl 1551 1379 5 3.4.3.2 Hardness Shall be not lower than 45 HRC, or equivalent (See 8.2); for thin gages where superficial hardness testing is impractical, microhardness testing in accordance with ASTM E 384 ma
36、y be used. Product shall not be rejected on the basis of hardness if the tensile properties of 3.4.3.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness or from another sample with similar nonconforming hardness. 3.5 Quality The product, as receiv
37、ed by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product. 3.6 Tolerances Shall conform to all applicable requirements of AMS2242. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The
38、 vendor of the product 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 product conforms to specified requirements. SAE INT
39、ERNATIONAL AMS5520G Page 5 of 7_ 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties as solution heat treated (3.4.1.1) and as austenite conditioned and precipitation heat treated (3.4.2.1), and tolerances (3.6) are acceptance tests and shall be performed on each
40、 heat or lot as applicable. 4.2.2 Periodic Tests Bending as solution heat treated (3.4.1.3), hardness (3.4.1.2, 3.4.2.2, and 3.4.3.2), and tensile properties as austenite conditioned, sub-zero transformed, and precipitation heat treated (3.4.3.1) are periodic tests and shall be performed at a freque
41、ncy selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS2371. 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 for tensile pr
42、operties of each lot as solution heat treated and as austenite conditioned and precipitation heat treated, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5520G, size, and quantity. 4.5 Resamplin
43、g and Retesting Shall be in accordance with AMS2371. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2807. 5.2 Packaging The product shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining
44、to the handling, packaging, and transportation of the product 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 Product not conforming to t
45、his 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 the previous issue of a docu
46、ment. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revision. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Hardness conversion tables for metals are presented
47、in ASTM E 140. SAE INTERNATIONAL AMS5520G Page 6 of 7_ 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 primary units and are presented only for information. 8.5 Purchase documents should specify not less than the following: AMS5520G Form and size of product desired
