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:/standards.sae.org/AMS6265P AEROSPACE MATERIAL SPECIFICATION AMS6265 REV. P Issued 1960-06 Revised 2016-12Supersed
5、ing AMS6265N Steel, Bars, Forgings, and Tubing 1.2Cr - 3.25Ni - 0.12Mo (0.07 - 0.13C) (9310) Vacuum Consumable Electrode Remelted (Composition similar to UNS G93106) RATIONALE AMS6265P results from a review and update of this specification that revises micro-inclusion rating (3.4.2.1), quality (3.5)
6、, and reporting (4.4). 1. SCOPE 1.1 Form This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock. 1.2 Application These products have been used typically for critical carburized parts requiring high minimum core hardne
7、ss within a narrow range and subject to very rigid magnetic particle inspection standards, but usage is not limited to such applications. 1.2.1 The core is machinable after hardening. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a par
8、t 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 has been specified, the last published issue of that documen
9、t shall apply. SAE INTERNATIONAL AMS6265P Page 2 of 8 2.1 SAE Publications Available from SAE International, 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. AMS2251 Tolerances Low-Alloy Steel Bars AMS2253 Tol
10、erances Carbon and Alloy Steel Tubing AMS2259 Chemical Check Analysis Limits Wrought Low-Alloy and Carbon Steels AMS2300 Steel Cleanliness, Premium Aircraft-Quality Magnetic Particle Inspection Procedure AMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and
11、Forging Stock AMS2372 Quality Assurance Sampling and Testing Carbon and Low-Alloy Steel Forgings AMS2806 Identification Bars, Wire, Mechanical Tubing, and Extrusions Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys AMS2808 Identification Forgings ARP1917 Clarification of Te
12、rms 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: 610
13、-832-9585, www.astm.org. ASTM A255 Determining Hardenability of Steel ASTM A370 Mechanical Testing of Steel Products ASTM A604 Macroetch Testing of Consumable Electrode Remelted Steel Bars and Billets ASTM E45 Determining the Inclusion Content of Steel ASTM E112 Determining Average Grain Size ASTM E
14、140 Hardness Conversion Tables for Metals ASTM E350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron ASTM E384 Microindentation Hardness of Materials SAE INTERNATIONAL AMS6265P Page 3 of 8 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall confo
15、rm to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E350, by spectrochemical methods, or by other analytical methods approved by purchaser. Table 1 - Composition Element Min. Max. Carbon 0.07 0.13 Manganese 0.40 0.70 Silicon 0.15 0.35 Phosphor
16、us - 0.015 Sulfur - 0.015 Chromium 1.00 1.40 Nickel 3.00 3.50 Molybdenum 0.08 0.15 Boron - 0.001 (10 ppm) Copper - 0.35 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of AMS2259. 3.2 Melting Practice Steel shall be multiple melted using consumable electrode vacuum
17、 practice in the remelt cycle. 3.3 Condition The product shall be supplied in the following condition; hardness and tensile strength shall be determined in accordance with ASTM A370: 3.3.1 Bars Bar shall not be cut from plate (also see 4.4.2). 3.3.1.1 Bars 0.500 Inch (12.70 mm) and Under in Nominal
18、Diameter or Least Distance Between Parallel Sides Cold finished having tensile strength not higher than 125 ksi (862 MPa) or hardness not higher than 262 HBW, or equivalent (see 8.2). 3.3.1.2 Bars Over 0.500 Inch (12.70 mm) in Nominal Diameter or Least Distance Between Parallel Sides Hot finished an
19、d annealed, unless otherwise ordered, having hardness not higher than 229 HBW, or equivalent (see 8.2). Bars ordered cold finished may have hardness as high as 248 HBW, or equivalent (see 8.2). 3.3.2 Forgings As ordered. 3.3.3 Mechanical Tubing Cold finished, unless otherwise ordered, having hardnes
20、s not higher than 25 HRC, or equivalent (see 8.2). Tubing ordered hot finished and annealed shall have hardness not higher than 99 HRB, or equivalent (see 8.2). SAE INTERNATIONAL AMS6265P Page 4 of 8 3.3.4 Forging Stock As ordered by the forging manufacturer. 3.4 Properties The product shall conform
21、 to the following requirements; hardness testing shall be performed in accordance with ASTM A370: 3.4.1 Macrostructure Visual examination of transverse full cross-sections from bars, billets, tube rounds, and forging stock, etched in hot hydrochloric acid in accordance with ASTM A604, shall show no
22、pipe or cracks. Porosity, segregation, inclusions, and other imperfections shall be no worse than the macrographs of ASTM A604 shown in Table 2. Table 2 - Macrostructure limits Class Condition Severity 1 Freckles A 2 White Spots A 3 Radial Segregation B 4 Ring Pattern B 3.4.1.1 If tubes are produced
23、 directly from ingots or large blooms, transverse sections may be taken form the tubes rather than tube rounds. Macroetch standards for such tubes shall be as agreed upon by purchaser and producer. 3.4.2 Micro-Inclusion Rating of Each Heat No specimen shall exceed the limits shown in Table 3, determ
24、ined in accordance with ASTM E45, Method D. Table 3 - Micro-inclusion rating limits Type A Thin A Heavy B Thin B Heavy C Thin C Heavy D Thin D Heavy Worst Field Severity 2.0 1.0 1.5 1.0 1.5 1.0 1.5 1.0 Worst Field Frequency, maximum a 1 a 1 a 1 3 1 Total Rateable Fields, Frequency, maximum b 1 b 1 b
25、 1 8 1 a - Combined A+B+C, not more than 3 fields. b - Combined A+B+C, not more than 8 fields. 3.4.2.1 A rateable field is defined as one that has a type A, B, C, or D inclusion rating of at least No. 1.0 thin or heavy in accordance with ASTM E45 (see 8.3). 3.4.3 Average Grain Size of Bars, Forgings
26、, and Tubing Shall be ASTM No. 5 or finer, determined in accordance with ASTM E112. 3.4.4 Hardenability of Each Heat Shall be J 1/16 inch (1.6 mm)=41 HRC maximum and J 6/16 inch (9.5 mm) = 32 HRC minimum, determined on the standard end-quench test specimen in accordance with ASTM A255 except that th
27、e steel shall be normalized at 1700 F 10 F (927 C 6 C) and the test specimen austenitized at 1500 F 10 F (816 C 6 C). SAE INTERNATIONAL AMS6265P Page 5 of 8 3.4.5 Chemical Banding of Each Heat Chemical banding shall be viewed metallographically (see 4.3.1.1). A specimen microhardness tested in accor
28、dance with ASTM E384 that exhibits a hardness difference between light and dark etching bands greater than 5 HRC converted from Vickers (see 8.2) shall be cause for rejection. The specimen shall be cut from in-process heat approval material, then normalized at 1700 F 10 F (927 C 6 C) and austenitize
29、d at 1500 F 10 F (816 C 6 C). As an option to improve metallographic contrast between bands, the specimen may be tempered two hours at 300 F 10 F (150 C 6 C). 3.5 Quality The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from
30、 imperfections detrimental to usage of the product. 3.5.1 Steel shall be premium aircraft-quality conforming to AMS2300. 3.5.2 Bars and mechanical tubing shall be free from seams, laps, tears, and cracks after removal of the standard stock removal allowance in accordance with AS1182 3.5.3 Grain flow
31、 of die forgings, except in areas that contain flash-line end grain, shall follow the general contour of the forgings showing no evidence of reentrant grain flow. 3.6 Tolerances 3.6.1 Bars In accordance with AMS2251. 3.6.2 Mechanical Tubing In accordance with AMS2253. 4. QUALITY ASSURANCE PROVISIONS
32、 4.1 Responsibility for Inspection The producer of the product shall supply all samples for producers 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 c
33、onforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), condition (3.3), macrostructure (3.4.1), micro-inclusion rating (3.4.2), average grain size (3.4.3), hardenability (3.4.4), chemical banding (3.4.5) and tolerances (3.6) are acceptance tests and
34、shall be performed on each heat or lot as applicable. 4.2.2 Periodic Tests Frequency-severity cleanliness rating (3.5.1) and grain flow of die forgings (3.5.3) are periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing is specified by purchaser. SAE
35、 INTERNATIONAL AMS6265P Page 6 of 8 4.3 Sampling and Testing Shall be as follows: 4.3.1 Bars, Mechanical Tubing, and Forging Stock In accordance with AMS2370. 4.3.1.1 Chemical Banding 4.3.1.1.1 Location of Samples During the in-process heat approval, the samples are to represent the top and bottom o
36、f the first and last remelted ingots. Longitudinal specimens shall be taken at the mid-radius location. If total heat approval data are not available at time of applying metal to a particular lot, tests shall be from the top and bottom of the applied ingot(s). 4.3.1.1.2 Test Procedure A minimum of f
37、ive (5) microhardness readings shall be taken in each area of interest and the average of these readings shall be used to determine the hardness data difference. The Vickers load shall be a minimum of 500 grams. A 2% Nital etch shall be used to identify the areas of interest. 4.3.2 Forgings In accor
38、dance with AMS2372. 4.4 Reports 4.4.1 The producer of bars, forgings, and mechanical tubing shall furnish with each shipment a report showing the producer identity, country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations), results of tests f
39、or composition, macrostructure, micro-inclusion rating, hardenability and chemical banding of each heat, and condition and average grain size of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numb
40、ers, AMS6265P, product form and size (and/or part number, if applicable), 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 If the ship size/shape is cut from a larger cross section, report the nominal metallurgically wo
41、rked size (also see 3.3.1). 4.4.3 The producer of forging stock shall furnish with each shipment a report showing the producer identity, country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations), results of tests for composition, macrostructu
42、re, micro-inclusion rating, hardenability and chemical banding of each heat, and the results of any additional property requirements imposed by 8.5. This report shall include the purchase order number, heat number, AMS6265P, size and quantity. 4.5 Resampling and Retesting 4.5.1 Bars, Mechanical Tubi
43、ng, and Forging Stock In accordance with AMS2370. 4.5.2 Forgings In accordance with AMS2372. SAE INTERNATIONAL AMS6265P Page 7 of 8 5. PREPARATION FOR DELIVERY 5.1 Sizes Except when exact lengths or multiples of exact lengths are ordered, straight bars and tubing will be acceptable in mill lengths o
44、f 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 5.2.1 Bars and Mechanical Tubing In accordance with AMS2806. 5.2.2 Forgings In accordance with AMS2808. 5.2.3 Forging Stock As agreed upon by purchaser and
45、 producer. 5.3 Protective Treatment Bars and mechanical tubing ordered cold drawn, cold rolled, ground, turned, or polished shall be protected from corrosion prior to shipment. 5.4 Packaging The product shall be prepared for shipment in accordance with commercial practice and in compliance with appl
46、icable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A producer shall include this specification number and its revision letter in all quotations and when acknowledging purchase orders.
47、 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 Revision Indicator A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not edit
48、orial changes, have been made to the 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 chang
49、es only. SAE INTERNATIONAL AMS6265P Page 8 of 8 8.2 Hardness conversion tables for metals are presented in ASTM E140. 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 a
