1、AEROSPACE INFORMATION REPORTAIR4923Issued 1996-05Reaffirmed 2006-10Bolts and Screws, Aerospace Engine -Materials, Procurement Specifications and Properties1. SCOPE:1.1 Type:This SAE Aerospace Information Report (AIR) provides a tabular listing of materials, procurement specifications, and mechanical
2、 properties for bolts and screws developed for use on aerospace propulsion systems designed using the U.S. customary system or the SI system.1.2 Purpose:The list is intended to give a brief overview of the various kinds of SAE aerospace procurement specifications available when developing bolt and s
3、crew part standards. Table 1 covers specifications based on the U.S. customary system and Table 2 covers specifications based on the SI system.1.2.1 Information Covered: Tables 1 and 2 include the following informationa. AMS material specification numberb. Material type (trade designation)c. Procure
4、ment specification numberd. Maximum test temperaturee. Ultimate tensile strength at room temperature, minimumf. Hardnessg. Ultimate tensile strength at test temperature, minimumh. Yield strength at room temperature, minimumi. Yield strength at test temperature, minimumj. Stress rupture strength at t
5、est temperature, minimum 23 h testk. Fatigue test loads, maximum and minimuml. Double shear strength at room temperature, minimumm. Process sequence for rolling thread and working underhead fillet radiusTable 3 provides material density () values for the bolt materials listed.SAE Technical Standards
6、 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 therefrom, is the sole respons
7、ibility 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 2006 SAE International All rights reserved. No part of this publication may be reproduced, stored
8、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) Fax: 724-776-0790 Email:
9、 CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org RATIONALE This document has been reaffirmed to comply with the SAE 5-year Review policy. SAE AIR4923 - 2 -TABLE 1 - Aerospace Engine Bolts Materials, Procurement Specifications, and Properties - InchSAE AIR4923 - 3 -TABLE 1 (Continued)SAE AI
10、R4923 - 4 -TABLE 1 (Continued)SAE AIR4923 - 5 -TABLE 1 (Continued)SAE AIR4923 - 6 -TABLE 2 - Aerospace Engine Bolts Materials, Procurement Specifications, and Properties - MetricSAE AIR4923 - 7 -TABLE 3 - Density () of Bolt Materials2. REFERENCES:There are no referenced publications specified herein
11、2.1 Symbols and Abbreviations:AISI American Iron and Steel InstituteAS Aerospace StandardAMS Aerospace Material SpecificationC steel carbon steeldecarb decarburizationdia diameterFsu ultimate shear stressFtu ultimate tensile stressSAE AIR4923 - 8 -2.1 (Continued):Fty tensile yield stressC degree Ce
12、lsiusF degree Fahrenheithi-exp high-expansionHRC hardness, Rockwell C scaleh hour(s)HT heat treatmentin inchksi kips (1000 lb) per square inchmatl spec material specificationmax maximummin minimumMPa megapascalspl platingprecip precipitationprcmt spec procurement specificationrm roomSI International
13、 System of Unitssoln solutionstbln stabilizationtemp temperaturethd threadUNS Unified Numbering System for metals and alloys rho = density, lb/in3(g/cm3)3. TEST METHODS:The mechanical properties listed in Table 1 are based on the following test methods:a. Double Shear: MIL-STD-1312-13b. Hardness: MI
14、L-STD-1312-6c. Stress Rupture: MIL-STD-1312-10d. Tensile Strength - room temperature: MIL-STD-1312-8e. Tensile Strength - elevated temperature: MIL-STD-1312-18f. Tension Fatigue: MIL-STD-1312-11SAE AIR4923 - 9 -3. (Continued):The mechanical properties listed in Table 2 are based on the following tes
15、t methods:a. Double Shear: DOD-STD-1312-113b. Hardness: MIL-STD-1312-6c. Stress Rupture: MIL-STD-1312-10d. Tensile Strength - room temperature: DOD-STD-1312-108e. Tensile Strength - elevated temperature: MIL-STD-1312-18f. Tension Fatigue: DOD-STD-1312-111PREPARED BY SAE COMMITTEE E-25, GENERAL STANDARDS FOR AEROSPACE PROPULSION SYSTEMS
