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 2009 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: 724-776-4970 (outside USA)
4、 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/AMS5848D AEROSPACE MATERIAL SPECIFICATION AMS5848D Issued 1987-01 Revised 2009-03Superseding AMS
5、5848C Steel, Corrosion-Resistant, Bars, Wire, Forgings, Extrusions, Tubing, and Rings Wear and Galling Resistant 8.0Mn 4.0Si 17Cr 8.5Ni 0.13N Solution Heat Treated (Composition similar to UNS S21800) RATIONALE AMS5848D revises reporting requirements (4.4.1) and is a Five Year Review and update of th
6、is specification. 1. SCOPE 1.1 Form This specification covers a corrosion-resistant steel in the form of bars, wire, forgings, extrusions, mechanical tubing, flash welded rings, and stock for forging, extruding, or flash welded rings. 1.2 Application These products have been used typically for parts
7、 requiring wear, galling, and corrosion resistance up to 950 F (510 C), but usage is not limited to such applications. Welding, brazing, or other exposure to temperatures over 950 F (510 C) during fabrication may impair corrosion resistance. 2. APPLICABLE DOCUMENTS The issue of the following documen
8、ts 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 referenced document has been cancelled and no superseding document ha
9、s 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 724-776-4970 (outside USA), www.sae.org. AMS2241 Tolerances, Corrosion and H
10、eat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire AMS2243 Tolerances, Corrosion and Heat-Resistant Steel Tubing AMS2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS2371 Quality
11、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 (Continued) SAE AMS5848D Page 2 of 7 AMS2806 Identification, Bars, Wire, Mechanical
12、 Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys AMS2808 Identification, Forgings AMS7490 Rings, Flash Welded, Corrosion and Heat-Resistant Austenitic Steels, Austenitic-Type Iron, Nickel, or Cobalt Alloys, or Precipitation-Hardenable Alloys 2.2 AST
13、M 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 Steels ASTM A 370 Mechanical Testing of Steel Products ASTM E
14、 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys 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 met
15、hods, or by other analytical methods acceptable to purchaser. TABLE 1 - COMPOSITION Element min maxCarbon - 0.10Manganese 7.00 9.00Silicon 3.50 4.50Phosphorus - 0.040Sulfur - 0.030Chromium 16.00 18.00Nickel 8.00 9.00Nitrogen 0.08 0.18Molybdenum - 0.75Copper - 0.753.1.1 Check Analysis Composition var
16、iations shall meet the applicable requirements of AMS2248. 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Bars, Wire, Forgings, Extrusions, Mechanical Tubing, and Flash Welded Rings Solution heat treated, free from continuous carbide network. 3.2.1.1 Bars and Wire 3.2.
17、1.1.1 All hexagons regardless of size, other bars 2.75 inches (69.8 mm) and under in nominal diameter or least distance between parallel sides, and wire shall be cold finished. 3.2.1.1.2 Bars, other than hexagons, over 2.75 inches (69.8 mm) in nominal diameter or least distance between parallel side
18、s shall be hot finished. SAE AMS5848D Page 3 of 7 3.2.1.2 Mechanical Tubing Shall be cold finished. 3.2.1.3 Flash Welded Rings Shall not be supplied unless specified or permitted on purchasers part drawing. When supplied, rings shall be manufactured in accordance with AMS7490. 3.2.2 Stock for Forgin
19、g, Extruding, or Flash Welded Rings As ordered by the forging, extrusion, or flash welded ring manufacturer. 3.3 Heat Treatment Bars, wire, forgings, extrusions, mechanical tubing, and flash welded rings shall be solution heat treated by heating within the range 1925 to 1975 F (1052 to 1079 C), hold
20、ing at heat for a time commensurate with section thickness, and cooling at a rate equivalent to an air cool or faster. 3.4 Properties The product shall conform to the following requirements; tensile and hardness testing shall be performed in accordance with ASTM A 370. 3.4.1 Bars, Wire, Forgings, Ex
21、trusions, Mechanical Tubing, and Flash Welded Rings 3.4.1.1 Tensile Properties Shall be as shown in Table 2 and Table 3. 3.4.1.1.1 Product 0.50 Inch (12.7 mm) and Under in Nominal Section Thickness Shall be as shown in Table 2. TABLE 2 - MINIMUM TENSILE PROPERTIES Property ValueTensile Strength 105
22、ksi (724 MPa)Yield Strength at 0.2% Offset 55 ksi (379 MPa)Elongation in 4D 35%Reduction of Area 55%3.4.1.1.2 Product Over 0.50 Inch (12.7 mm) in Nominal Section Thickness Shall be as shown in Table 3. TABLE 3 - MINIMUM TENSILE PROPERTIES Property ValueTensile Strength 95 ksi (655 MPa)Yield Strength
23、 at 0.2% Offset 50 ksi (345 MPa)Elongation in 4D 35%Reduction of Area 55%SAE AMS5848D Page 4 of 7 3.4.1.2 Hardness Shall be as follows, or equivalent (See 8.2). 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 f
24、rom the same sample as that with nonconforming hardness or from another sample with similar nonconforming hardness. 3.4.1.2.1 Bars 170 to 255 HB, determined at approximate mid-radius or quarter-thickness. 3.4.1.2.2 Forgings, Extrusions, and Flash Welded Rings Not higher than 240 HB. 3.4.1.2.3 Mechan
25、ical Tubing Not higher than 100 HRB, determined approximately midway between outer and inner surfaces. 3.4.1.3 Susceptibility to Integranular Attack Specimens from the product shall pass the intergranular corrosion test performed in accordance with ASTM A 262, Practice E. 3.4.2 Forging Stock When a
26、sample of stock is forged to a test coupon and heat treated as in 3.3, specimens taken from the heat treated coupon shall conform to the requirements of 3.4.1.1.2 and 3.4.1.2. If specimens taken from the stock after heat treatment as in 3.3 conform to the requirements of 3.4.1.1.2 and 3.4.1.2, the t
27、ests shall be acceptable as equivalent to tests of a forged coupon. 3.4.3 Stock for Extruding or Flash Welded Rings Specimens taken from the stock after heat treatment as in 3.3 shall conform to the requirements of 3.4.1.1.2 and 3.4.1.2. 3.5 Quality The product, as received by purchaser, shall be un
28、iform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product. 3.5.1 Grain flow of die forgings, except in areas which contain flash-line end grain, shall follow the general contour of the forgings showing no evidence of reentrant g
29、rain flow. 3.6 Tolerances Shall conform to all applicable requirements of the following: 3.6.1 Bars and Wire In accordance with AMS2241. 3.6.2 Mechanical Tubing In accordance with AMS2243. SAE AMS5848D Page 5 of 7 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the pr
30、oduct 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. 4.2 Classification of Te
31、sts 4.2.1 Acceptance Tests The following requirements are acceptance tests and shall be performed on each heat or lot as applicable: 4.2.1.1 Composition (3.1) of each heat. 4.2.1.2 Tensile properties (3.4.1.1.1 or 3.4.1.1.2) of each lot of bars, wire, forgings, extrusions, mechanical tubing, and fla
32、sh welded rings. 4.2.1.3 Hardness (3.4.1.2) of each lot of bars, forgings, extrusions, mechanical tubing, and flash welded rings. 4.2.1.4 Tolerances (3.6) of bars, wire, and mechanical tubing. 4.2.2 Periodic Tests Susceptibility to intergranular attack (3.4.1.3), tests of forging stock (3.4.2) and s
33、tock for extruding or flash welded rings (3.4.3) to demonstrate ability to develop required properties, and grain flow of die forgings (3.5.1) 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 Testi
34、ng Shall be as follows: 4.3.1 Bars, Wire, Extrusions, Mechanical Tubing, Flash Welded Rings, and Stock for Forging, Extruding, or Flash Welded Rings In accordance with AMS2371. 4.3.2 Forgings In accordance with AMS2374. 4.4 Reports 4.4.1 The vendor of bars, wire, forgings, extrusions, mechanical tub
35、ing, and flash welded rings shall furnish with each shipment a report showing the results of tests for composition of each heat and for tensile properties or hardness of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order
36、number, heat and lot numbers, AMS5848D, product form, size, and quantity. If forgings are supplied, the size and melt source of stock used to make the forgings shall also be included. 4.4.2 The vendor of stock for forging, extruding, or flash welded rings shall furnish with each shipment a report sh
37、owing the results of tests for composition of each heat. This report shall include the purchase order number, heat number, AMS5848D, size, and quantity. SAE AMS5848D Page 6 of 7 4.5 Resampling and Retesting Shall be as follows: 4.5.1 Bars, Wire, Extrusions, Mechanical Tubing, Flash Welded Rings, and
38、 Stock for Forging, Extruding, or Flash Welded Rings In accordance with AMS2371. 4.5.2 Forgings In accordance with AMS2374. 5. PREPARATION FOR DELIVERY 5.1 Sizes Except when exact lengths or multiples of exact lengths are ordered, straight bars, wire, and tubing will be acceptable in mill lengths of
39、 6 to 20 feet (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 as follows: 5.2.1 Bars, Wire, Extrusions, and Mechanical Tubing In accordance with AMS2806. 5.2.2 Forgings In accordance with AMS2808. 5.2.3 Flash W
40、elded Rings and Stock for Forging, Extruding, or Flash Welded Rings As agreed upon by purchaser and vendor. 5.3 Packaging The product shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, a
41、nd 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 this specification, or to modi
42、fications authorized by purchaser, will be subject to rejection. SAE AMS5848D Page 7 of 7 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 this docum
43、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 Hardness conversion tables for metals are presented
44、in ASTM E 140. 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: AMS5848D Product form and size or part number of product desired Quantity of product desired. PREPARED BY AMS COMMITTEE “F”
