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 2016 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/AMS5718E AEROSPACE MATERIAL SPECIFICATION AMS5718 REV. E Issued 1970-11 Cancelled
5、 2007-04 Revised 2016-05Superseding AMS5718D Steel, Bars, Forgings, Tubing, and Rings, Corrosion Resistant 11.8Cr - 2.5Ni - 1.8Mo - 0.33V (0.08 - 0.15C) Annealed (Composition similar to UNS S64152) RATIONALE AMS5718E revises the grain size requirement (3.4.2), Quality (3.5), and Reports (4.5),.and i
6、s a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a corrosion resistant steel in the form of bars, wire, forgings, mechanical tubing, extrusions, flash welded rings, and stock for forging or flash welded rings. 1.2 Application Primarily for parts, suc
7、h as compressor wheels and structural members, requiring high strength and oxidation resistance up to 800 F (425 C). 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 supplie
8、r 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 Internationa
9、l, 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. AMS2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire AMS2243 Tolerances, Corrosion and Heat-Resista
10、nt Steel Tubing AMS2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys SAE INTERNATIONAL AMS5718E Page 2 of 8 AMS2303 Steel Cleanliness, Aircraft Quality, Martensitic Corrosion-Resistant Steels, Magnetic Parti
11、cle Inspection Procedure AMS2371 Quality Assurance Sampling and Testing Corrosion and Heat-Resistant Steels and Alloys Wrought Products and Forging Stock AMS2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy Forgings AMS2375 Control of Forgings Requiring First
12、Article Approval AMS2806 Identification Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys AMS2808 Identification Forgings AMS7493 Rings, Flash Welded, Ferritic and Martensitic Corrosion-Resistant Steels ARP1917 Clarification of
13、Terms Used in Aerospace Metals Specifications AS1182 Standard Stock Removal Allowance Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 6
14、10-832-9585, www.astm.org. ASTM A370 Mechanical Testing of Steel Products ASTM E112 Determining Average Grain Size ASTM E353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys ASTM E381 Macroetch Testing Steel Bars, Billets, Blooms, and Forgings S
15、AE INTERNATIONAL AMS5718E Page 3 of 8 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 E353 or by spectrographic or other analytical methods approved by purchaser. Table 1 - Composition m
16、in max Carbon 0.08 0.15 Manganese 0.50 0.90 Silicon - 0.35 Phosphorus - 0.025 Sulfur - 0.025 Chromium 11.00 12.50 Nickel 2.00 3.00 Molybdenum 1.50 2.00 Vanadium 0.25 0.40 Nitrogen 0.01 0.05 Copper - 0.50 3.1.1 Check Analysis Composition variations shall meet the requirements of AMS2248. 3.2 Conditio
17、n The product shall be supplied in the following condition: 3.2.1 Bars 3.2.1.1 Rounds Annealed and centerless ground, turned, or polished. 3.2.1.2 Hexagons Annealed and cold finished. 3.2.1.3 Bars Other than Rounds or Hexagons Annealed and descaled. 3.2.2 Wire Annealed and cold finished. SAE INTERNA
18、TIONAL AMS5718E Page 4 of 8 3.2.3 Forgings, Flash Welded Rings, and Extrusions Annealed and descaled. 3.2.3.1 Flash welded rings shall not be supplied unless specified or permitted on purchasers part drawing. When supplied, they shall be manufactured in accordance with AMS7493. 3.2.4 Mechanical Tubi
19、ng Cold finished and annealed. 3.2.5 Stock for Forging or Flash Welded Rings As ordered by the forging or flash welded ring manufacturer. 3.3 Heat Treatment Bars, wire, forgings, flash welded rings, extrusions, and mechanical tubing shall be annealed by heating to 1275 F 20 F (690 C 11 C), holding a
20、t heat for not less than 6 hours, and cooling in air. 3.4 Properties The product shall conform to the following requirements; tensile and hardness testing shall be performed in accordance with ASTM A370: 3.4.1 Macrostructure Visual examination of transverse sections as in 4.3.2.1 from bars, billets,
21、 tube rounds or tubes, and stock for forging or flash welded rings, etched in accordance with ASTM E381 in hot hydrochloric acid at 160 to 180 F (70 to 80 C) for sufficient time to develop a well-defined macrostructure, shall show no pipe or cracks. Except as specified in 3.4.1.1, porosity, segregat
22、ion, inclusions, and other imperfections shall be no worse than standards agreed upon by purchaser and producer. 3.4.1.1 If tubes are produced directly from ingots or large blooms, transverse sections may be taken from tubes rather than tube rounds. Macrostructure standards for such tubes shall be a
23、s agreed upon by purchaser and producer. 3.4.2 Average Grain Size of Bars, Forgings, Tubing and Rings Shall be ASTM No. 5 or finer, determined in accordance with ASTM E112. 3.4.3 Bars, Wire, Forgings, Flash Welded Rings, Extrusions, and Mechanical Tubing 3.4.3.1 As Annealed 3.4.3.1.1 Bars, Forgings,
24、 Flash Welded Rings, Extrusions and Mechanical Tubing Shall have hardness not higher than 311 HB, or equivalent. 3.4.3.1.2 Wire Shall have tensile strength not higher than 155 ksi (1070 MPa). SAE INTERNATIONAL AMS5718E Page 5 of 8 3.4.3.2 After Hardening and Tempering Specimens taken from bars, wire
25、, extrusions, and tubing, from forgings with axis in the longitudinal direction, and from parent metal of flash welded rings shall have the following properties after being hardened by heating to 1925 F 25 F (1050 C 15 C), holding at heat for not less than 30 minutes, and cooling as required to room
26、 temperature and tempered by heating to 1200 F 25 F (650 C 15 C), holding at heat for not less than 2 hours, and cooling in air to room temperature: 3.4.3.2.1 Tensile Properties Shall be as shown in Table 2. Table 2 - Minimum tensile properties Tensile Strength, min 135 ksi (930 MPa) Yield Strength
27、at 0.2% Offset, min 110 ksi (760 MPa) Elongation in 4D, min 17% Reduction of Area, min 30% 3.4.3.2.2 Hardness Should be 286 to 331 HB, or equivalent, but the product shall not be rejected on the basis of hardness if the tensile property requirements of 3.4.3.2.1 are met. 3.4.4 Forging Stock When a s
28、ample of stock is forged to a test coupon and heat treated as in 3.3 and 3.4.3.2, specimens taken from the heat treated coupon shall conform to the requirements of 3.4.3.2.1 and 3.4.3.2.2. If specimens taken from the stock after heat treatment as in 3.3 and 3.4.3.2 conform to the requirements of 3.4
29、.3.1 and 3.4.3.2.2, the tests shall be accepted as equivalent to tests of the forged coupon. 3.4.5 Stock for Flash Welded Rings Specimens taken from the stock after heat treatment as in 3.3 and 3.4.3.2 shall conform to the requirements of 3.4.3.2.1 and 3.4.3.2.2. 3.5 Quality The product, as received
30、 by purchaser, shall be uniform in quality and condition, sound and free from foreign materials and from imperfections detrimental to usage of the product. 3.5.1 Steel shall be aircraft quality conforming to AMS2303. 3.5.2 Bars and mechanical tubing ordered hot rolled or cold drawn, or machined, gro
31、und, turned or polished, shall, after removal of the standard stock removal allowance in accordance with AS1182, be free from seams, laps, tears, and cracks open to the machined, ground, turned, or polished surface. 3.5.3 Grain flow of die forgings, except in areas that contain flash-line end grain,
32、 shall follow the general contour of the forgings, showing no evidence of re-entrant grain flow. 3.6 Sizes Except when exact lengths or multiples of exact lengths are ordered, straight bars, wire, and mechanical tubing will be acceptable in mill lengths of 6 to 20 feet (2 to 6 m) but not more than 1
33、0% of any shipment shall be supplied in lengths shorter than 10 feet (3 m). SAE INTERNATIONAL AMS5718E Page 6 of 8 3.7 Tolerances Shall conform to all applicable requirements of the following: 3.7.1 Bars and Wire AMS2241. 3.7.2 Mechanical Tubing AMS2243. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsib
34、ility for Inspection The producer of the product shall supply all samples for producers tests and shall be responsible for performing all required tests. Results of such tests shall be reported to the purchaser as required by 4.5. Purchaser reserves the right to sample and to perform any confirmator
35、y testing deemed necessary to ensure that the product conforms to the requirements of this specification. 4.2 Classification of Tests 4.2.1 Acceptance Tests The following requirements are classified as acceptance tests and shall be performed on each heat or lot as applicable. 4.2.1.1 Composition (3.
36、1), macrostructure (3.4.1) of each heat, and grain size (3.4.2) of each lot. 4.2.1.2 Tensile properties (3.4.3.2.1) and hardness (3.4.3.2.2) of each lot of bars, wire, forgings, mechanical tubing, extrusions, and flash welded rings after hardening and tempering. 4.2.1.3 Tolerances (3.7) of bars, wir
37、e, and mechanical tubing. 4.2.2 Periodic Tests The ability of forging stock (3.4.4) and of stock for flash welded rings (3.4.5) to develop required properties are classified as periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing is specified by p
38、urchaser. 4.2.3 Preproduction Tests When AMS2375 is specified (see 4.4), all applicable technical requirements of this specification are preproduction tests and shall be performed prior to or on the first-article shipment of a forging to a purchaser, when a change in material, processing, or both re
39、quires reapproval as in 4.4, and when purchaser deems confirmatory testing to be required. 4.3 Sampling Shall be in accordance with the following: 4.3.1 Bars, Wire, Mechanical Tubing, Extrusions, Flash Welded Rings, and Stock for Flash Welded Rings AMS2371. SAE INTERNATIONAL AMS5718E Page 7 of 8 4.3
40、.2 Forgings and Forging Stock AMS2374 and as follows: 4.3.2.1 Samples for macrostructure (3.4.1) testing shall be full cross-sectional specimens obtained from the finished billet or suitable rerolled product representing the top and bottom of at least the first, middle, and last usable ingot of each
41、 heat. 4.3.2.2 Specimens for tensile tests of forgings shall be cut from any plane perpendicular to the axis of the forging with axis of specimen in the selected plane perpendicular to a radius. When size and shape permit, additional specimens shall be cut with the axis of specimen approximately par
42、allel to the axis of the forging. Size, location, and number of specimens shall be as agreed upon by purchaser and producer. 4.4 Approval When specified, approval and control of forgings shall be in accordance with AMS2375. 4.5 Reports 4.5.1 The producer of the product shall furnish with each shipme
43、nt a report showing the producers name and country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations), and the results of tests for chemical composition of each heat and the results of tests on each lot to determine conformance to the other ac
44、ceptance test requirements and stating that the product conforms to the other technical requirements of this specification. This report shall include the purchase order number, heat number, AMS5718E, product form, size, and quantity. If forgings are supplied, the part number and the size and melt so
45、urce of stock used to make the forgings shall also be included. 4.5.2 The producer of forging stock shall furnish with each shipment a report showing the producers name and country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations), and the re
46、sults of tests for composition, and the results of any additional property requirements imposed by the purchase order (see 8.4). This report shall include the purchase order number, heat and lot numbers, AMS5718E, product form and size or part number, and quantity. 4.6 Resampling and Retesting Shall
47、 be in accordance with the following: 4.6.1 Bars, Wire, Mechanical Tubing, Extrusions, Flash Welded Rings, and Stock for Flash Welded Rings AMS2371. 4.6.2 Forgings and Forging Stock AMS2374. 5. PREPARATION FOR DELIVERY 5.1 Identification The product shall be identified as follows: 5.1.1 Bars, Wire,
48、and Mechanical Tubing In accordance with AMS2806. 5.1.2 Forgings In accordance with AMS2808. SAE INTERNATIONAL AMS5718E Page 8 of 8 5.1.3 Extrusions, Flash Welded Rings, and Stock for Forging or Flash Welded Rings As agreed upon by purchaser and producer. 5.2 Packaging 5.2.1 The product shall be pre
49、pared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. Packaging shall conform to carrier rules and regulations applicable to the mode of transportation. 6. ACKNOWLEDGMENT A producer shall mention this sp
