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/AS620G AEROSPACE STANDARD AS620 REV. G Issued 1964-04 Revised 2012-11 Superseding AS620F Hose
5、 Assemblies, Convoluted Polytetrafluoroethylene Metallic Reinforced, High Temperature, Medium Pressure, Aircraft RATIONALE Added periodic testing requirements for fire resistant hose assemblies, relocated fire test requirement from NOTES paragraph 6.1.1 to performance requirement paragraph 3.5.12 an
6、d qualification testing paragraph 4.6.13. 1. SCOPE This SAE Aerospace Standard (AS) defines the requirements for a convoluted polytetrafluoroethylene (PTFE) lined, metallic reinforced, hose assembly suitable for use in aircraft fluid systems at temperatures of -65 to 400 F and at operating pressures
7、 per Table 1. TABLE 1 - PHYSICAL REQUIREMENTS OF HOSE ASSEMBLIES AND WEIGHT OF HOSE Hose Size Hose Weight Max1lb/in Operating Pressure Max psi Proof PressureMax psi Burst Pressure Room TemperatureMin psi Burst Pressure High TemperatureMin psi Bend Radiusat Inside of Bend Min in 04 0.010 1000 2000 40
8、00 2800 1.25 06 0.010 1000 2000 4000 2800 2.25 08 0.022 1000 2000 4000 2800 2.88 10 0.020 1000 1800 3600 2500 3.00 12 0.027 1000 1800 3600 2500 3.75 16 0.040 1000 1800 3600 2500 5.00 20 0.055 1000 1800 3600 2500 6.25 24 0.060 750 1500 3000 2100 7.50 32 0.090 250 500 1000 700 10.00 40 0.110 100 200 4
9、00 280 12.50 48 0.145 100 200 400 280 15.00 64 0.200 100 200 400 280 24.00 1Hose weight shall be determined on a minimum length of 12 in. SAE AS620G Page 2 of 22 1.1 Types 1.1.1 Hose assemblies furnished under this document may be of two types: Type I - Non-conductive Inner Tube Type II - Conductive
10、 Inner Tube 1.1.2 Hose assemblies furnished under this document may be of the following classes. If no class is defined then Class 1 shall prevail. Class 1 - Liquid Proof Test Class 2 - Liquid and Pneumatic Proof Test 2. APPLICABLE DOCUMENTS The following publications form a part of this document to
11、 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 document
12、 takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-7
13、76-4970 (outside USA), www.sae.org. AMS2700 Passivation of Corrosion Resistant Steels AMS5556 Steel, Corrosion and Heat-Resistant, Seamless or Welded Tubing, 18Cr - 11Ni - 0.70Cb (SAE 30347) Solution Heat Treated AMS5557 Steel, Corrosion and Heat-Resistant, Seamless or Welded Hydraulic Tubing, 18.5C
14、r - 10.5Ni - 0.40Ti (SAE 30321), Solution Heat Treated AMS5567 Steel, Corrosion Resistant, Seamless or Welded Hydraulic Tubing, 19Cr - 10Ni (SAE 30304), Solution Heat Treated AMS5570 Steel, Corrosion and Heat-Resistant, Seamless Tubing, 18Cr - 11Ni - 0.40Ti (SAE 30321), Solution Heat Treated AMS5571
15、 Steel, Corrosion and Heat-Resistant, Seamless Tubing, 18Cr - 10.5Ni - 0.70Cb (Nb) (347), Solution Heat Treated AMS5575 Steel, Corrosion and Heat-Resistant, Welded Tubing, 18Cr - 10.5Ni - 0.70Cb(Nb) (SAE 30347), Solution Heat Treated AMS5636 Steel, Corrosion-Resistant, Bars and Wire, 18Cr - 9.0Ni (S
16、AE 30302) Solution Heat Treated and Cold Drawn, 100 ksi (689 MPa) Tensile Strength AMS5637 Steel, Corrosion Resistant, Bars and Wire, 18Cr - 9.0Ni (SAE 30302) Solution Heated Treated, Cold Drawn and Stress Relieved, 125 ksi (862 MPa) Tensile Strength AMS5639 Steel, Corrosion-Resistant, Bars, Wire, F
17、orgings, Tubing, and Rings, 19Cr - 10Ni, Solution Heat Treated SAE AS620G Page 3 of 22 AMS5643 Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, and Rings, 16Cr - 4.0Ni - 0.30Cb - 4.0Cu, Solution Heat Treated, Precipitation Hardenable AMS5644 Steel Bars and Forgings, Corrosion Heat Resistant
18、, 17Cr - 7Ni - 1Al AMS5645 Steel, Corrosion and Heat Resistant, Bars, Wire, Forgings, Tubing, and Rings, 18Cr - 10Ni - 0.40Ti (321), Solution Heat Treated AMS5646 Steel, Corrosion and Heat-Resistant, Bars, Wire, Forgings, Tubing, and Rings, 18Cr - 11Ni - 0.60Cb(Nb) (347), Solution Heat Treated AMS56
19、47 Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, and Rings, 19Cr - 9.5Ni, Solution Heat Treated AMS5656 Steel, Corrosion Resistant, Bars, Wire, Forgings, Extrusions, and Rings, 9.0Mn - 20Cr - 6.5Ni - 0.27N Solution Heat Treated AMS5659 Steel, Corrosion-Resistant, Bars, Wire, Forgings, Ri
20、ngs, and Extrusions, 15Cr - 4.5Ni - 0.30Cb (Nb) - 3.5Cu, Consumable Remelted, Precipitation Hardenable AMS5685 Steel, Corrosion Resistant, Safety Wire, 18Cr - 11.5Ni (SAE 30305) Solution Heat Treated, Cold Finished AMS5688 Steel, Corrosion-Resistant, Wire, 18Cr - 9.0Ni (SAE 30302), Spring Temper AMS
21、5689 Steel, Corrosion and Heat Resistant, Wire, 18Cr - 10.5Ni - 0.40Ti (SAE 30321), Solution Heat Treated AMS5690 Steel, Corrosion and Heat Resistant, Wire, 17Cr - 12Ni - 2.5Mo (SAE 30316), Solution Heat Treated AMS5697 Steel, Corrosion-Resistant, Wire, 19Cr - 9.5Ni (SAE 30304), Solution Heat Treate
22、d AMS-QQ-P-35 Passivation Treatments for Corrosion-Resistant Steels AMS-QQ-S-763 Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings AS150 Hose Assembly, Type Classifications of, Basic Performance and Fire Resistance AS611 Hose Assembly and Tubing, Polytetrafluoroethylene, Cleaning Methods
23、for ARP908 Torque Requirements, Installation and Qualification Test, Hose and Tube Fitting AS1055 Fire Testing of Flexible Hose, Tube Assemblies, Coils, Fittings, and Similar System Components ARP1835 Preparation for Delivery, General Requirements for Hose Assemblies AS2078 Test Methods, Hose Assemb
24、lies, Polytetrafluoroethylene (PTFE) AS4395 Fitting End, Flared, Tube Connection, Design Standard AS4658 Fitting End, External Thread, Short Flareless, Design Standard AS4659 Fitting End, Bulkhead, External Thread, Short Flareless, Design Standard AS4700 Short Flareless Fittings, Installation Proced
25、ures and Torque For SAE AS620G Page 4 of 22 AS4703 Fitting End, Acorn, Short Flareless, Design Standard AS7003 Nadcap Program Requirements AS7112 National Aerospace and Defense Contractors Accreditation Program Requirements for Fluid System Components AS8879 Screw Threads - UNJ Profile, Inch, Contro
26、lled Radius Root with Increased Minor Diameter AS33514 Fitting End, Standard Dimensions for Flareless Tube Connection and Gasket Seal 2.2 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.
27、 ASME B46.1 Surface Texture ASME Y14.100 Engineering Drawing Practices 2.3 ASTM Publications 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 A 262 Standard Recommended Practices for Detecting Susceptibil
28、ity to Intergranular Attack in Stainless Steel ASTM A 313 Standard Specification for Stainless Steel Spring Wire ASTM A 580 Specification for Stainless and Heat Resisting Steel Wire ASTM D 471 Standard Test Fluids, Hydrocarbons 2.4 NAS Standards Available from Aerospace Industries Association, 1000
29、Wilson Boulevard, Suite 1700, Arlington, VA 22209-3928, Tel: 703-358-1000, www.aia-aerospace.org. NAS 847 Caps and Plugs, Protective, Dust and Moisture Seal NAS 1760 Fitting End, Flareless Acorn, Standard Dimensions for 2.5 PRI Publications Available from Performance Review Institute, 161 Thorn Hill
30、 Road, Warrendale, PA 15086-7527, Tel: 724-772-1616, www.pri-network.org. PD2001 Qualified Product Management Council Procedures for Qualified Products Group PD2101 Aerospace Quality Assurance, Product Standard, Qualification Procedures, Fluid Systems SAE AS620G Page 5 of 22 2.6 U.S. Government Publ
31、ications Available from the Document Automation and Production Service (DAPS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/assist.daps.dla.mil/quicksearch/. TT-I-735 Isopropyl Alcohol MIL-DTL-5624 Turbine Fuel, Aviation, Grades JP-4 and JP-5 MIL-HDBK-831 P
32、reparation of Test Reports MIL-PRF-680 Degreasing Solvent MIL-PRF-5606 Hydraulic Fluid, Petroleum Based, Aircraft, Missile and Ordnance MIL-PRF-7808 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base MIL-PRF-83282 Hydraulic Fluid, Fire Resistant Synthetic Hydrocarbon Base, Aircraft MIL-PRF-872
33、57 Hydraulic Fluid, Fire Resistant, Low Temperature, Synthetic Hydrocarbon Base, Aircraft and Missile MIL-STD-130 Identification Marking of U.S. Military Property 2.7 Hose Assembly Procurement Specifications Refer to AS620SUP1 for a listing of applicable hose assembly procurement standards applicabl
34、e to this document. 3. TECHNICAL REQUIREMENTS 3.1 Qualification Hose assemblies supplied in accordance with this document shall be representative of products which have been subjected to and which have successfully passed the qualification tests specified in this standard. 3.1.1 Manufacturer Qualifi
35、cation A manufacturer producing a product in conformance to this procurement specification shall be accredited in accordance with the requirements of PD2101, AS7003 and AS7112, and shall be listed in a Performance Review Institute (PRI) Qualified Manufacturers List (QML). 3.1.2 Product Qualification
36、 All products shall conform to the requirements of this procurement specification and shall be approved in accordance with the requirements of PD2001, and PD2101, for listing in a Performance Review Institute (PRI) Qualified Parts List (QPL). 3.2 Material The hose assembly materials shall be uniform
37、 in quality, free from defects, consistent with good manufacturing practice and shall conform to applicable specifications and the requirements specified herein. All materials not specifically described herein shall be of the highest quality and suitable for the purpose intended. SAE AS620G Page 6 o
38、f 22 3.2.1 Metals Metals used in the hose and fittings shall be corrosion-resistant and shall conform to the following specifications: a. Bars and Forgings: (1) AMS-QQ-S-763 Class 302 - Cond. A or Cond. B (AMS5636 or AMS5637) (2) AMS-QQ-S-763 Class 304 - Cond. A or Cond. B (AMS5639) (3) AMS-QQ-S-763
39、 Class 304L - Cond. A or Cond. B (AMS5647) (4) AMS-QQ-S-763 Class 321 - Cond. A (AMS5645) (5) AMS-QQ-S-763 Class 347 - Cond. A (AMS5646) (6) AMS5643 17-4PH (7) AMS5644 17-7PH (8) AMS5656 21-6-9 (9) AMS5659 15-5PH b. Tubing: (1) AMS5556 Type 1 or Type 2 Stainless Steel Tubing, 347 (2) AMS5557 Type 1
40、or Type 2 Stainless Steel Tubing, 321 (3) AMS5567 Type 1 or Type 2 Stainless Steel Tubing, 304 (4) AMS5570 Seamless Stainless Steel Tubing, 321 (5) AMS5571 Seamless Stainless Steel Tubing, 347 (6) AMS5575 Welded Stainless Steel Tubing, 347 c. Wire: (1) ASTM A 580/A 313 Comp. 302 (AMS5688) (2) ASTM A
41、 580/A 313 Comp. 304 (AMS5697) (3) ASTM A 580/A 313 Comp. 316 (AMS5690) (4) ASTM A 580/A 313 Comp. 321 (AMS5689) (5) AMS5685 305 SAE AS620G Page 7 of 22 3.3 Construction The hose assembly shall consist of a convoluted polytetrafluoroethylene inner tube, which may be covered with convoluted woven gla
42、ss cloth and/or other suitable materials, corrosion-resistant steel-wire reinforcement, and corrosion-resistant steel end fittings as required to meet the construction and performance requirements of this document and as required for its intended use. 3.3.1 Inner Tube The inner tube shall be of a co
43、nvoluted construction of virgin polytetrafluoroethylene resin designed to promote easy bending. It shall be free from pitting or projections on the inner surface. Additives may be included in the compound from which the tube is fabricated. 3.3.2 Reinforcement The reinforcement shall consist of corro
44、sion-resistant steel wires conforming to the applicable specifications listed in 3.2.1. The wires shall be so arranged over the inner tube as to provide sufficient strength to ensure conformance with the requirements specified herein. Broken reinforcing wires shall be cause for rejection. Crossed-ov
45、er reinforcing wires shall not be cause for rejection of the hose assembly. 3.3.3 Interlayers Interlayers, if used, shall be of a suitable material and shall be resistant to all fluids with which the hose may come in contact during normal service. They shall be capable of withstanding temperatures o
46、f -65 to 400 F and shall not extrude through the outer braid during testing or in service. 3.3.4 Fittings All fittings shall be permanently attached and proven to meet the requirements herein. Standard hose assemblies shall have flared fittings to mate with AS4395, flareless fittings according to NA
47、S 1760 to mate with AS33514 or AS4375, or short flareless fittings in accordance to AS4703 to mate with AS4658 or AS4659, in accordance with applicable documents (see 2.1). Fitting hex portions shall fit standard wrench openings. 3.3.4.1 Straight Fittings Fittings shall be of one-piece construction.
48、 Weld or braze joints must not be located in the fluid paths, except welded and redrawn tubing per AMS5567, AMS5556 or AMS5557 may be used. 3.3.4.2 Other Fittings Other fittings, including elbow fittings, shall be of one piece construction to the maximum extent possible. When one piece construction
49、is not used, the joints shall be welded using either butt-weld or lap-weld design. For double elbow assemblies, the elbows may be treated as non-standard. 3.3.4.3 End Fitting Collars (Sockets) All end fitting collars (sockets) crimped or swaged, fabricated from Type 304 stainless steel are required to be capable of passing an embrittlement test as specified in ASTM A 262 Practice E, prior to assembly to the nipple o
