1、 AEROSPACE STANDARD FITTING, ELBOW, 90, REDUCER, BULKHEAD, FLARELESS AND SHORT FLARELESS AS4686Copyright 2017 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photoc
2、opying, 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 USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED1992-07REVISED2017-08THIRD AN
3、GLE PROJECTION CUSTODIAN: G-3/G-3B REV.D FEDERAL SUPPLY CLASS 4730 AS4686 SHEET 1 OF 7 REV. D PROCUREMENT SPECIFICATION: AS18280 /4/ SAE Technical Standards Board Rules provide that: “This report is published by SAEtoadvance thestate of technicaland engineering sciences. The useof this report is ent
4、irely voluntary, and its applicability andsuitability for any particularuse, includingany patent infringement arisingtherefrom,is thesole responsibility of theuser.” SAE reviews eachtechnical reportatleast every fiveyears at whichtime it may be revised, reaffirmed, stabilized, or cancelled. SAE invi
5、tes your written comments and suggestions.SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS4686D RATIONALE ADDED CONDUCTIVE HIGH PURITY ALUMINUM COATING FOR ALUMINUM ALLOY FITTINGS. FIGURE 1 - FITTING, ELBOW, 90, REDUCER AEROSPACE STANDARD S
6、AS4686 SHEET 2 OF 7 REV. D FITTING, ELBOW, 90, REDUCER, BULKHEAD, FLARELESS AND SHORT FLARELESS FIGURE 2A - FITTING, ELBOW, 90, SIZE 16 BULKHEAD REDUCER TO SIZE 20 SHORT END FIGURE 2B - FITTING, ELBOW, 90, SIZE 20 BULKHEAD REDUCER TO SIZE 24 SHORT END AEROSPACE STANDARD SAS4686 SHEET 3 OF 7 REV. D F
7、ITTING, ELBOW, 90, REDUCER, BULKHEAD, FLARELESS AND SHORT FLARELESS FIGURE 2C - FITTING, ELBOW, 90, SIZE 12 AND SMALLER BULKHEAD REDUCER TO SIZE 20 SHORT END FIGURE 2D - FITTING, ELBOW, 90, SIZE 16 BULKHEAD REDUCER TO SIZE 24 SHORT END FIGURE 2 AEROSPACE STANDARD SAS4686 SHEET 4 OF 7 REV. D FITTING,
8、 ELBOW, 90, REDUCER, BULKHEAD, FLARELESS AND SHORT FLARELESS TABLE 1 - DIMENSIONS AND WEIGHTS /10/ BASIC NO. AS4686 /9/ /20/ SIZE CODE D H J +.005 -.020 LB/EA APPROX REF ALUM LB/EA APPROX REF STEEL LB/EA APPROX REF TI 20 .517 .124 1.375 .368 1.02 .583 24 .614 .156 1.688 .555 1.53 .880 TABLE 2 - LEG
9、LENGTH A /11/ SIZE OF PORT FORGING SIZE /9/ 20 FORGING SIZE /9/ 24 02 2.320 2.602 03 2.367 2.649 04 2.430 2.712 05 2.430 2.712 06 2.476 2.758 08 2.678 2.930 10 2.789 3.071 12 2.989 3.180 14 2.989 3.180 16 2.989 3.180 20 2.686 2.968 24 - 2.968 AEROSPACE STANDARD SAS4686 SHEET 5 OF 7 REV. D FITTING, E
10、LBOW, 90, REDUCER, BULKHEAD, FLARELESS AND SHORT FLARELESS TABLE 3 - LEG LENGTH B /11/ SIZE OF PORT FORGING SIZE /9/ 20 FORGING SIZE /9/ 24 02 1.710 1.898 03 1.757 1.945 04 1.788 1.976 05 1.788 1.976 06 1.804 1.992 08 1.879 2.085 10 1.960 2.148 12 2.023 2.211 14 2.023 2.211 16 2.023 2.211 20 1.798 1
11、.986 24 - 1.986 TABLE 4 - TUBE SIZE AND CORRESPONDING THREADS SIZE OF PORT (NOMINAL TUBE SIZE) T THREAD PER AS8879 CLASS 3A 02 .125 .3125-24UNJF 03 .188 .3750-24UNJF 04 .250 .4375-20UNJF 05 .312 .5000-20UNJF 06 .375 .5625-18UNJF 08 .500 .7500-16UNJF 10 .625 .8750-14UNJF 12 .750 1.0625-12UNJ 14 .875
12、1.1875-12UNJ 16 1.000 1.3125-12UNJ 20 1.250 1.5625-12UNJ 24 1.500 1.8125-12UNJ AEROSPACE STANDARD SAS4686 SHEET 6 OF 7 REV. D FITTING, ELBOW, 90, REDUCER, BULKHEAD, FLARELESS AND SHORT FLARELESS NOTES: NOTICE THIS DOCUMENT REFERENCES A PART WHICH CONTAINS CADMIUM AS A PLATING MATERIAL. CONSULT LOCAL
13、 OFFICIALS IF YOU HAVE QUESTIONS CONCERNING CADMIUMS USE. /1/ MATERIAL: a. CODE LETTER T - TYPE 6AL-4V TITANIUM ALLOY FORGING OR BAR PER AMS4928. b. CODE LETTER V - TYPE 15-5PH CORROSION RESISTANT STEEL FORGING OR BAR PER AMS5659. c. CODE LETTER W - TYPE 7075-T73 ALUMINUM ALLOY FORGING PER AMS4141 O
14、R TYPE 7075-T7351 ALUMINUM ALLOY BAR PER AMS4124 OR 7075-T73 ALUMINUM ALLOY BAR PER AMS-QQ-A-225/9. 2. HEAT TREAT: a. MATERIAL CODE LETTER T - NONE. b. MATERIAL CODE LETTER V - HEAT TREAT TO CONDITION H-1075 PER AMS2759/3. c. MATERIAL CODE LETTER W - ELECTRICAL CONDUCTIVITY AND HARDNESS PER PROCUREM
15、ENT SPECIFICATION. /3/ FINISH: a. MATERIAL CODE LETTER T - FLUORIDE PHOSPHATE CONVERSION COAT PER AMS2486 OR ANODIZE PER AMS2488 TYPE 2. BARE AREAS OF FLUORIDE PHOSPHATE COATING OCCURRING ON SEALING, BEARING OR THREADED SURFACES SHALL NOT BE CAUSE FOR REJECTION. BARE AREAS SHALL NOT EXCEED 30% OF TH
16、E REMAINING SURFACE AREA. b. MATERIAL CODE LETTER V - (1) V CODE PARTS TO BE PASSIVATED ONLY WILL HAVE NO FINISH CODE LETTER AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE: PASSIVATE PER AMS2700 TYPE 2 OR 8. (2) V CODE PARTS TO BE CADMIUM PLATED ONLY WILL HAVE THE FINISH CODE LETTER “P“
17、AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE: CADMIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 2. c. MATERIAL CODE LETTER W (1) W CODE PARTS TO BE ANODIZED ONLY WILL HAVE NO FINISH CODE LETTER AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE ANODIZE PER AMS2472 OR PER MIL-A-862
18、5, TYPE II, CLASS 2 DYED BROWN, SIMILAR TO COLOR 10080 OF AMS-STD-595. (2) W CODE PARTS TO BE COATED WITH HIGH PURITY ALUMINUM ONLY WILL HAVE THE FINISH CODE LETTER “V” AFTER THE SIZE CODE IN THE PART NUMBER. SEE PROCUREMENT SPECIFICATION FOR REQUIREMENTS. /4/ PROCUREMENT SPECIFICATION: AS18280 EXCE
19、PT AS SPECIFIED ON THIS STANDARD. PRODUCT SUPPLIED TO THIS SPECIFICATION SHALL BE MANUFACTURED BY AN ACCREDITED MANUFACTURER AS LISTED IN THE PERFORMANCE REVIEW INSTITUTE (PRI) QUALIFIED PRODUCTS LIST (QPL) PRI-QPL-AS18280 FOR THIS STANDARD. SEE www.eAuditN FOR CURRENT QPL ONLINE /5/ IDENTIFICATION
20、AT LOCATION SHOWN: MARK PER AS478 CLASS C OR METHOD 7A3, OR 15B. MANUFACTURERS NAME, TRADEMARK OR CAGE CODE, BASIC PART NUMBER, AND MATERIAL CODE LETTER. 6. INTENDED USE: THIS PART IS DESIGNED FOR USE IN TUBING CONNECTION SYSTEMS WITH NOMINAL OPERATING PRESSURES AS FOLLOWS: a. SIZES -20 AND -24 TITA
21、NIUM ALLOY AND CORROSION RESISTANT STEEL AT 3000 PSI. b. SIZES -20 AND -24 ALUMINUM ALLOY AT 600 PSI. LARGEST PORT DETERMINES PRESSURE RATING. 7. WHEN MACHINED FROM BAR OR OVERSIZED FORGINGS, THE CENTER BODY SECTION SHALL CONFORM TO AS1376, TABLE 10. /8/ RADIUS APPLICABLE FOR TITANIUM PARTS ONLY. AE
22、ROSPACE STANDARD SAS4686 SHEET 7 OF 7 REV. D FITTING, ELBOW, 90, REDUCER, BULKHEAD, FLARELESS AND SHORT FLARELESS /9/ LARGEST PORT DETERMINES FORGING SIZE, REGARDLESS OF THE LOCATION. MINIMUM FORGING SIZE IS -20. THIS STANDARD IS FOR REDUCERS ONLY; FOR ALL PORTS THE SAME SIZE USE AS4669. /10/ WEIGHT
23、S ARE FOR NON-REDUCERS ONLY. REDUCER FITTINGS WILL HAVE LOWER WEIGHTS. /11/ REDUCER FITTINGS THAT ARE LINED OUT IN TABLES 2 AND 3 SHOULD BE AVOIDED. IF THEY MUST BE USED, SPECIAL ATTENTION SHOULD BE GIVEN TO CLAMPING OR OTHER MEANS TO PROTECT THE SMALLER PORT OR TUBE. /12/ FINISH CODE LETTER “P” SHA
24、LL BE PLACED AFTER SIZE CODES ONLY FOR MATERIAL CODE “V” PARTS THAT ARE TO BE CADMIUM PLATED. FINISH CODE LETTER “V” SHALL BE PLACED AFTER SIZE CODES ONLY FOR MATERIAL CODE “W” PARTS THAT ARE TO BE COATED WITH HIGH PURITY ALUMINUM TO PROVIDE LOW ELECTRICAL CONTACT RESISTANCE. NO OTHER LETTERS ARE TO
25、 FOLLOW THE SIZE CODES. 13. 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 EDITORIAL CHANGES, HAVE BEEN MADE TO THE PREVIOUS ISSUE OF THIS DOCUMENT. AN (R) SYMBOL TO THE LEFT OF THE DOCUMENT TITLE IN
26、DICATES 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. 14. INVENTORIED PARTS CONFORMING TO THE PREVIOUS ISSUE MAY BE USED TO DEPLETION. 15. INTERPRETATION OF DRAWING
27、PER AS4296. 16. SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M. REQUIREMENTS PER ASME B46.1. UNLESS OTHERWISE SPECIFIED, MACHINED SURFACES TO BE 125 MICROINCHES Ra. FORGED SURFACES MAY BE 250 MICROINCHES Ra. 17. BREAK EDGES .003 TO .015, UNLESS OTHERWISE SPECIFIED. 18. DIMENSIONING AND TOLERANCING: ANSI
28、Y14.5M-1982. 19. DIMENSIONS ARE IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: LINEAR DIMENSIONS .010, ANGULAR DIMENSIONS 030. /20/ EXAMPLE OF PART NUMBER: A S 4 6 8 6 V 20 16 PB A S IC P A R T N U M B E R F IN IS H C O D E L E T T E R / 3 / / 1 2 /M A T E R IA L C O D E L E T T E R / 1 /S IZ E C O D E , T U B E S IZ E O FP O R T # 1 IN . 0 6 2 IN C R E M E N T S / 9 /S IZ E C O D E , T U B E S IZ E O FP O R T # 2 IN . 0 6 2 IN C R E M E N T S / 9 /
