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    SAE AS 4506B-2009 Bolts and Screws Steel UNS S66286 Tensile Strength 160 ksi Procurement Specification《UNS S66286 抗拉强度为160 ksi的螺栓和螺丝采购规范》.pdf

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    SAE AS 4506B-2009 Bolts and Screws Steel UNS S66286 Tensile Strength 160 ksi Procurement Specification《UNS S66286 抗拉强度为160 ksi的螺栓和螺丝采购规范》.pdf

    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/AS4506B AEROSPACE STANDARD AS4506 REV. B Issued 1992-12 Revised 2009-12Reaffirmed

    5、 2015-04 Superseding AS4506A Bolts and Screws, Steel, UNS S66286 Tensile Strength 160 ksi, Procurement Specification FSC 5306 RATIONALE AS4506B has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE This document covers bolts and screws made from a corrosion and heat resistant,

    6、 precipitation hardenable iron base alloy of the type identified under the Unified Numbering System as UNS S66286. 1.1 Type The following specification designations and their properties are covered: AS4506 160 ksi minimum ultimate tensile strength at room temperature AS4506-1 160 ksi minimum ultimat

    7、e tensile strength at room temperature 95 ksi minimum ultimate shear strength at room temperature 1.1.1 Classification 160 ksi minimum tensile strength at room temperature. 1.2 Application Primarily for use in aerospace propulsion system applications where a good combination of strength and corrosio

    8、n resistance is required. 1.3 Safety - Hazardous Materials While the materials, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole resp

    9、onsibility 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. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this document

    10、to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this docume

    11、nt takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 7

    12、24-776-4970 (outside USA), www.sae.org. AMS2750 Pyrometry AMS5853 Steel, Corrosion and Heat-Resistant, Bars and Wire, 15Cr - 25.5Ni - 1.2Mo - 2.1Ti - 0.006B - 0.30V Consumable Electrode Melted 1800 F (982 C) Solution Treated and Work-Strengthened 160 ksi (1103 MPa) Tensile Strength AS1132 Bolts, Scr

    13、ews and Nuts - External Wrenching UNJ Thread, Inch - Design Standard AS3062 Bolts, Screws and Studs - Screw Thread Requirements AS3063 Bolts, Screws and Studs, Geometric Control Requirements AS8879 Screw Threads - UNJ Profile, Inch Controlled Radius Root with Increased Minor Diameter 2.1.2 ASTM Publ

    14、ications 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 E 8 Tension Testing of Metallic Materials ASTM E 112 Determining Average Grain Size ASTM E 140 Standard Hardness Conversion Tables for Metals ASTM

    15、 E 1417 Liquid Penetrant Examination ASTM D 3951 Commercial Packaging 2.1.3 ASME Publications Available from American Society of Mechanical Engineers, 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900, Tel: 973-882-1170, www.asme.org. ASME B46.1 Surface Texture (Surface Roughness, Waviness, and

    16、Lay) SAE INTERNATIONAL AS4506B 2 OF 222.1.4 AIA Publications Available from Aerospace Industries Association, 1000 Wilson Boulevard, Suite 1700, Arlington, VA 22209-3928, Tel: 703-358-1000, www.aia-aerospace.org. NASM1312-6 Fastener Test Methods, Method 6, Hardness NASM1312-8 Fastener Test Methods,

    17、Method 8, Tensile Strength NASM1312-13 Fastener Test Methods, Method 13, Double Shear Test 2.2 Definitions BURR: A rough edge or ridge left on the metal due to a cutting, grinding, piercing or blanking operation. COLD ROLLING: Forming material below the recrystallation temperature. CRACK: Rupture in

    18、 the material which may extend in any direction and which may be intercrystalline or transcrystalline in character. DISCONTINUITY: An interruption in the normal physical structure or configuration of a part; such as a lap, seam, inclusion, crack, machining tear, or stringer. HEAT PATTERN: A discerni

    19、ble difference in the etched appearance between the head and shank caused by the plastic forming of the head. INCLUSION: Nonmetallic particles originating from the making process. They may exist as discrete particles or strings of particles extending longitudinally. INSPECTION LOT: Shall consist of

    20、nuts from a single production lot, of the same part number. LAP: Surface imperfection caused by folding over metal fins or sharp corners and then rolling or forging them into the surface. The allowable lap depth shall not exceed the limit specified herein. The minimum condition that shall be rated a

    21、s a lap is a fold having its length equal to or greater than three times its width with a depth of 0.0005 inch when viewed at 200X magnification. MACHINING TEAR: A pattern of short, jagged individual cracks, generally at right angles to the direction of machining, frequently the result of improperly

    22、 set cutting tools, or dull cutting tools. NON-CONFORMANCE: A departure from a specified requirement for any characteristic. NON-CONFORMING UNIT: A unit of the product that has one or more non-conformances. PRODUCTION INSPECTION LOT: Shall be all finished parts of the same part number, made from a s

    23、ingle heat of alloy, heat treated at the same time to the same specified condition, produced as one continuous run, and submitted for the manufacturers inspection at the same time. ROOM TEMPERATURE: Ambient temperature (68 F approximately). SEAM: Longitudinal surface imperfection in the form of an u

    24、nwelded, open fold in the material. STRINGER: A solid nonmetallic impurity in the metal bar, often the result of inclusions that have been extended during the rolling process. TIGHT BURR: A burr closely compacted and binding in the periphery of a part without any loose ends and is within the dimensi

    25、onal limits of the part. SAE INTERNATIONAL AS4506B 3 OF 222.3 Unit Symbols C - degree Celsius F - degree Fahrenheit % - percent (1% = 1/100) lbf - pounds force ksi - kips (1000 pounds) per square inch sp gr - specific gravity HRC - hardness, Rockwell C scale 3. TECHNICAL REQUIREMENTS 3.1 Material Sh

    26、all be AMS5853 steel heading stock. 3.2 Design Finished (completely manufactured) parts shall conform to the following requirements: 3.2.1 Dimensions The dimensions of finished parts, after all processing including plating, shall conform to the part drawing. Dimensions apply after plating but before

    27、 coating with solid film lubricants. 3.2.2 Surface Texture Surface texture of finished parts, prior to plating or coating, shall conform to the requirements as specified on the part drawing, determined in accordance with ASME B46.1. 3.2.3 Threads Screw thread UNJ profile and dimensions shall be in a

    28、ccordance with AS8879, unless otherwise specified on the part drawing. 3.2.3.1 Incomplete Lead and Runout Threads Incomplete threads are permissible at the entering end and at the juncture of the unthreaded portion of the shank or adjacent to the head as specified in AS3062. 3.2.3.2 Chamfer The ente

    29、ring end of the thread shall be chamfered as specified on the part drawing. SAE INTERNATIONAL AS4506B 4 OF 223.2.4 Geometric Tolerances Part features shall be within the geometric tolerances specified on the part drawing and, where applicable, in accordance with AS3063. 3.3 Fabrication 3.3.1 Blanks

    30、Heads shall be formed by hot forging at a temperature not higher than 1950 F, or by cold forging. Lightening holes may be produced by any suitable method. Wrenching recesses may be forged or machined. Flash or chip clearance in machined recesses shall not cause dimensions to exceed the specified lim

    31、its. 3.3.2 Heat Treatment The following precipitation heat treatment shall be performed on the headed blanks before finishing the shank and bearing surface of the head, cold working the head-to-shank fillet radius or rolling the threads. 3.3.2.1 Heating Equipment Furnaces may be any type ensuring un

    32、iform temperature throughout the parts being heated and shall be equipped with, and operated by, automatic temperature controllers and data recorders conforming to AMS2750. The heating medium or atmosphere shall cause no surface hardening by carburizing or nitriding. 3.3.2.2 Precipitation Heat Treat

    33、ment Blanks shall be precipitation heat treated by heating to a temperature within the range 1200 to 1300 F, holding at the selected temperature within 25 F not less than 8 hours and cooling in air. 3.3.3 Oxide Removal Surface oxide and oxide penetration resulting from prior heat treatment shall be

    34、removed from the full body diameter and bearing surface of the head of the precipitation heat treated blanks prior to cold rolling the fillet radius and rolling the threads. The oxide removal process shall produce no intergranular attack or corrosion of the blanks. The metal removed from the bearing

    35、 surface of the head and the full body diameter of the shank shall be as little as practicable to obtain a clean, smooth surface. 3.3.4 Cold Working of Fillet Radius After removal of oxide as in 3.3.3, the head-to-shank fillet radius of parts having the radius complete throughout the circumference o

    36、f the part shall be cold worked sufficiently to remove all visual evidence of grinding or tool marks. Distortion due to cold working shall conform to Figure 1, unless otherwise specified on the part drawing. It shall not raise metal more than 0.002 inches above the contour at “A” or depress metal mo

    37、re than 0.002 inches below the contour at “B” as shown in Figure 1; distorted areas shall not extend beyond “C” shown in Figure 1. In configurations having an undercut connected with the fillet radius, the cold working will be required only for 90 degrees of fillet arc, starting at the point of tang

    38、ency of the fillet radius and the bearing surface of the head. For shouldered bolts, having an unthreaded shank diameter larger than the thread major diameter and having an undercut connected with a fillet between the threaded shank and the shoulder of the unthreaded shank, the cold working will be

    39、required only for 90 degrees of the fillet arc, starting at the point of tangency of the fillet radius and the shouldered surface of the unthreaded shank. The shank diameter on full shank close tolerance bolts shall not exceed its maximum diameter limit after cold rolling the head to shank fillet ra

    40、dius. 3.3.5 Thread Rolling Thread shall be formed on the finished blanks by a single cold rolling process after removal of oxide as in 3.3.3. SAE INTERNATIONAL AS4506B 5 OF 223.3.6 Cleaning Parts, after finishing, shall be degreased and immersed in one of the following solutions for the time and tem

    41、perature shown: a. One volume of nitric acid (sp gr 1.42) and 9 volumes of water for not less than 20 minutes at room temperature. b. One volume of nitric acid (sp gr 1.42) and 4 volumes of water for 30 to 40 minutes at room temperature. c. One volume of nitric acid (sp gr 1.42) and 4 volumes of wat

    42、er for 10 to 15 minutes at 140 to 160 F. 3.3.6.1 Immediately after removal from the cleaning solution, parts shall be thoroughly rinsed in clean water at 70 to 200 F. 3.4 Product Marking Each part shall be identification marked as specified on the part drawing. The markings may be formed by forging

    43、or stamping, raised or depressed 0.010 inches maximum, with rounded root form on depressed characters. 3.5 Plating or Coating Where required, surfaces shall be plated as specified by the part drawing. Where coating with solid film lubricants is required, the under-head bearing surface, the unthreade

    44、d shank, and the threads shall be coated as specified on the part drawing; other surfaces are optional to coat, unless otherwise specified. Plating thickness shall be determined in accordance with the requirements in the applicable plating specification. 3.6 Mechanical Properties Where AS4506B is sp

    45、ecified, parts shall conform to the requirements of 3.6.1 and 3.6.2. Where AS4506-1 is specified, parts shall conform to the requirements of 3.6.1, 3.6.2, and 3.6.3. Threaded members of gripping fixtures for tensile tests shall be of sufficient size and strength to develop the full strength of the p

    46、art without stripping the thread. The loaded portion of the shank shall have two to three full threads from the thread runout exposed between the loading fixtures during tensile test. AS4506B finished parts shall be tested in accordance with the following test methods: a. Hardness: MIL-STD-1312-6 in

    47、 accordance with NASM1312-6 b. Ultimate Tensile Strength at Room Temperature: MIL-STD-1312-8 in accordance with NASM1312-8 AS4506-1 finished parts shall be tested in accordance with the following test methods: a. Hardness: MIL-STD-1312-6 in accordance with NASM1312-6 b. Ultimate Tensile Strength at

    48、Room Temperature: MIL-STD-1312-8 in accordance with NASM1312-8 c. Ultimate Double Shear at Room Temperature: MIL-STD-1312-13 in accordance with NASM1312-13 SAE INTERNATIONAL AS4506B 6 OF 223.6.1 Ultimate Tensile Strength at Room Temperature 3.6.1.1 Finished Parts Parts shall have an ultimate tensile

    49、 load not lower than that specified in Table 2 and shall be tested to failure in order to observe fracture location, first measuring and recording the maximum tensile load achieved. Screws, such as 100 degree flush head, pan head, and fillister head, shall have an ultimate tensile load not lower than that specified in Table 2; screws need not be tested to failure, however, the maximum tensile load achieved shall be measured and rec


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