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/AMS4650M AEROSPACE MATERIAL SPECIFICATION AMS4650 REV. M Issued 1939-12 Revised 2013-02 Super
5、seding AMS4650L Copper-Beryllium Alloy, Bars, Rods, Shapes, and Forgings 98Cu - 1.9Be Solution Heat Treated TB00 (A) (Composition similar to UNS C17200) RATIONALE AMS4650M revises requirements for chemical analysis (3.1) and Heat Treatment (3.3), and is a Five Year Review and update of this specific
6、ation. 1. SCOPE This specification covers a copper-beryllium alloy in the form of bars, rods, shapes, and forgings. 1.1 Application These products have been used typically for parts after aging requiring a combination of high strength, good wear resistance, and corrosion resistance and where electri
7、cal conductivity or low magnetic susceptibility may be important, but usage is not limited to such applications. 1.2 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this s
8、pecification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.
9、 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 referenced
10、 document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. SAE AMS4650M Page 2 of 7 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Can
11、ada) or 724-776-4970 (outside USA), www.sae.org. AMS2221 Tolerances, Copper and Copper Alloy Bars and Rods AMS2750 Pyrometry AMS2808 Identification, Forgings 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-
12、9585, www.astm.org. ASTM B 249/B 249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes, and Forgings ASTM E 3 Practice for Preparation of Metallographic Specimens ASTM E 8/E 8M Tension Testing of Metallic Materials ASTM E 18 Rockwell Hardness of Metallic Ma
13、terials ASTM E 112 Determining Average Grain Size ASTM E 478 Chemical Analysis of Copper 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 478, by spectrochemical methods, or by o
14、ther analytical methods acceptable to purchaser. TABLE 1 - COMPOSITION Element min max Beryllium 1.80 2.00 Nickel plus Cobalt 0.20 - Nickel plus Cobalt plus Iron - 0.6 Aluminum - 0.20 Silicon - 0.20 Copper (3.1.2) remainder Sum of Named Elements (3.1.3) 99.5 - 3.1.1 These composition limits do not p
15、reclude the presence of other elements. Limits may be established and analysis required for unnamed elements by agreement between the manufacturer or supplier and purchaser. SAE AMS4650M Page 3 of 7 3.1.2 Copper may be reported as “remainder”, or as the difference between the sum of results for all
16、elements and 100%, or as the result of direct analysis. 3.1.3 When all the elements in the table are analyzed, the sum shall be 99.5% minimum, but such determination is not required for routine acceptance of each lot. 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Bars
17、, Rods, and Shapes Hot or cold worked to size, solution heat treated, and cold straightened if necessary. 3.2.1.1 The cross-sectional area of bars, rods, and shapes shall be less than one-half that of the ingots from which they are formed; i.e., bars, rods, and shapes shall have been subjected to ov
18、er 50% reduction of area during formation. 3.2.2 Forgings Solution heat treated. 3.2.3 Stock for Forging As ordered by the forging manufacturer. 3.3 Heat Treatment Product shall be solution heat treated by heating within the range 1400 to 1475 F (760 to 802 C), holding at heat for a minimum time of
19、30 minutes, and quenching in water. Pyrometry shall be in accordance with AMS2750. 3.4 Properties The product shall conform to the following requirements: 3.4.1 As Solution Heat Treated (TB00) 3.4.1.1 Bars, Rods, and Shapes 3.4.1.1.1 Tensile Properties Shall be as shown in Table 2, determined in acc
20、ordance with ASTM E 8/E 8M; elongation requirement applies only to product over 0.311 inch (7.90 mm) in nominal diameter or distance between parallel sides. TABLE 2 - TENSILE PROPERTIES Property Value Tensile Strength, maximum 85.0 ksi (586 MPa) Elongation in 2 inches (50.8 mm), minimum 35% 3.4.1.1.
21、2 Maximum Average Grain Size Shall be not larger than shown in Table 3, determined in accordance with ASTM E 112. Product may be precipitation heat treated as in 3.4.2 before examination. SAE AMS4650M Page 4 of 7 TABLE 3 - MAXIMUM AVERAGE GRAIN SIZE Nominal Diameter or Least Distance Between Paralle
22、l Sides Inches Nominal Diameter or Least Distance Between Parallel Sides Millimeters Maximum Grain Size Millimeter Up to 1.000, excl Up to 25.40, excl 0.050 Over 1.000 to 1.500, excl Over 25.40 to 38.10, excl 0.075 Over 1.500 to 2.000, excl Over 38.10 to 50.80, excl 0.100 Over 2.000 to 3.000 excl Ov
23、er 50.80 to 76.20 excl 0.125 3.4.1.2 Forgings 3.4.1.2.1 Hardness Shall be not higher than 85 HRB, or equivalent, determined in accordance with ASTM E 18. 3.4.1.2.2 Average Grain Size Shall be as agreed upon by purchaser and vendor, determined in accordance with ASTM E 112. 3.4.1.2.3 Average Grain Fl
24、ow 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 re-entrant grain flow. 3.4.1.3 Bar, Rod, Shapes, and Forgings 3.4.1.3.1 Microstructure Product shall contain not more than 6% beta phase constitu
25、ent, determined at 100X magnification on specimens prepared in accordance with ASTM E 3. 3.4.2 After Precipitation Heat Treatment Bars, rods, shapes, and forgings shall have the following properties after being precipitation heat treated by heating within the range 600 to 675 F (316 to 358 C), holdi
26、ng at heat for 3 hours 0.25, and cooling in air. 3.4.2.1 Bars, Rods, and Shapes 3.4.2.1.1 Tensile Properties Shall be as shown in Table 4, determined in accordance with ASTM E 8/E 8M. SAE AMS4650M Page 5 of 7 TABLE 4 - MINIMUM TENSILE PROPERTIES Property Value Tensile Strength 165 ksi (1138 MPa) Yie
27、ld Strength at 0.2% Offset 140 ksi ( 965 MPa) Elongation in 2 inches (50.8 mm) 3% 3.4.2.1.2 Hardness Bars, rods, and shapes 0.188 inch (4.78 mm) and over in nominal diameter or least distance between parallel sides shall have hardness not lower than 36 HRC, or equivalent, determined in accordance wi
28、th ASTM E 18. The product shall not be rejected on the basis of hardness if the tensile properties of 3.4.2.1.1 are acceptable, determined on product taken from the same sample as that with nonconforming hardness or from another sample with similar nonconforming hardness. 3.4.2.2 Forgings 3.4.2.2.1
29、Hardness Shall be not lower than 36 HRC, or equivalent, determined in accordance with ASTM E 18. 3.4.3 After Re-Solution and Precipitation Heat Treatment Bars, rods, shapes, and forgings shall have hardness not lower than 36 HRC, or equivalent, determined in accordance with ASTM E 18, after being re
30、-solution heat treated in accordance with 3.3 and precipitation heat treated in accordance with 3.4.2. 3.4.4 Forging Stock As agreed upon by purchaser and vendor. 3.5 Quality Product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from
31、 imperfections detrimental to usage of the product. 3.6 Tolerances Bars and rods shall conform to AMS2221 as applicable to refractory alloys. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product shall supply all samples for vendors tests and shall be responsibl
32、e 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 Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties of bars
33、, rods, and shapes in solution heat treated condition (3.4.1.1.1), grain size of bars, rods, and shapes (3.4.1.1.2), microstructure of bars, rods, shapes, and forgings (3.4.1.3.1), forging grain size as agreed upon (3.4.1.2.2), tensile properties of bars, rods, and shapes after precipitation heat tr
34、eatment (3.4.2.1.1), and hardness of forgings after re-solution and precipitation heat treatment (3.4.3) are acceptance tests and shall be performed on each lot. SAE AMS4650M Page 6 of 7 4.2.2 Periodic Tests Properties of bars, rods, shapes, and forgings (except hardness, See 4.2.1) after re-solutio
35、n and precipitation heat treatment (3.4.3), and properties of forging stock (3.4.4) 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 Testing Shall be in accordance with the following: 4.3.1 Bars, R
36、ods, and Shapes ASTM B 249/B 249M and the following: 4.3.1.1 Specimens for tensile testing of bars, rods, and shapes over 1.500 inches (38.10 mm) in nominal diameter or least distance between parallel sides shall have their axes located at approximately mid-radius. 4.3.2 Forgings Two samples from ea
37、ch lot; a lot shall be all forgings of one part number processed consecutively and presented for vendors inspection at one time. 4.3.3 Forging Stock As agreed upon by purchaser and vendor. 4.4 Reports The vendor of the product shall furnish with each shipment a report showing the results of tests fo
38、r chemical composition of each lot and the results of tests on each lot to determine conformance to the other acceptance test requirements and, when performed, to the periodic test requirements. This report shall include the purchase order number, lot number, AMS4650M, size, and quantity. If forging
39、s are supplied, the part number and the size and melt source of stock used to make the forgings shall also be included. 4.5 Resampling and Retesting Failure of any specimen to meet specified requirements shall cause product represented by such specimens to be subject to rejection. A retest sample of
40、 at least two specimens shall be randomly selected to replace each failed specimen from the original sample. All retest samples shall conform to specified requirements. If any retest specimen fails to meet specified requirements, the product represented shall be rejected. 5. PREPARATION FOR DELIVERY
41、 5.1 Identification Shall be as follows: 5.1.1 Bars, Rods, and Shapes Individual pieces or bundles shall have attached a suitable tag legibly marked with the purchase order number, AMS4650M, and the nominal size or shall be boxed and the box marked with the same information. 5.1.2 Forgings In accord
42、ance with AMS2808. SAE AMS4650M Page 7 of 7 5.1.3 Forging Stock As agreed upon by purchaser and vendor. 5.2 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, and t
43、ransportation 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 modifica
44、tions authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (l) 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 document. An (R) symbol to the lef
45、t 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 clarified in ARP1917. 8.3 Dimensions and properties in inch
46、/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 documents should specify not less than the following: AMS4650M Product form and size or part number of product desired Quantity of product desired. PREPARED BY AMS COMMITTEE “D”
