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/MA2150 AEROSPACE STANDARD MA2150 Issued 1993-02 Reaffirmed 2015-08 Clamps, Loop o
5、r P Style, Single Point Mount, Multiple Shapes, Metric RATIONALE MA2150 has been reaffirmed to comply with the SAE five-year review policy. Changes in this reaffirm are format/editorial only.1. SCOPE:1.1 This aerospace specification establishes the requirements for metric loop or “P“ style clamps us
6、ed for systems installation in aerospace equipment.1.2 Product Classification:The clamp assemblies covered by this document all incorporate a single mounting point, but may be bare or cushioned, and vary in shape such as fully round, partially round, or rectangular.1.3 Field of Application:Use of th
7、ese clamp assemblies is primarily for the support of fluid systems tubing and components but may be used for other general purpose applications such as wire, cable, wave guide tubes, and system grounding, as determined applicable by the design activity. Installation and selection is recommended per
8、ARP1897.2. REFERENCES:2.1 Applicable Documents:The following documents form a part of this document to the extent specified herein. The latest issue of Aerospace Material Specifications (AMS), Metric Aerospace Standards (MA), and Aerospace Recommended Practices (ARP) shall apply.SAE INTERNATIONAL MA
9、2150 Page 2 of 16 2.1.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.AMS 5510 Wrought, Corrosion, and Heat Resistant Alloy, Sheet, Strip, and Plate, 18Cr, 10.5Ni, 0.40Ti, Solution Heat TreatedAMS 5528 Wrought, Corrosion, and Heat Resistant Alloy, Sheet, Str
10、ip, and Plate, 17Cr, 7.1Ni, 1.1Al, Solution Heat TreatedAMS 4944 Titanium Alloy, Tubing, Seamless, Hydraulic, 3.0Al, 2.5V, Cold Worked and Stress RelievedAMS 4945 Tubing, Seamless, Hydraulic, 3.0Al, 2.5V, Texture Controlled, 105,000 psi (724 MPa) Yield StrengthAS478 Identification Marking MethodsARP
11、1527 Color Coding, Elastomers for Tube Clamp CushionsARP1897 Clamp Selection and Installation GuideMA2150/1 Clamp, Loop Style, Cushioned with Wedge, Hydrocarbon Fluid Resistant, MetricMA2150/2 Clamp, Loop Style, Cushioned with Wedge, Phosphate Ester Fluid Resistant, MetricMA2150/3 Clamp, Loop Style,
12、 Cushioned With Wedge, High Temperature, MetricMA2150/4 Clamp Support, Loop Clamp, MetricMA2150/5 Clamp, Loop Style, With Insert, Phosphate Ester Fluid Resistant, MetricMA2150/6 Clamp, Loop Style, With Insert, Phosphate Ester Fluid Resistant, MetricMA2150/7 Clamp, Loop Style, With Insert, High Tempe
13、rature, MetricMA2152/1 Clamp, Center Mount, Bare Metal, Aluminum, MetricMA2152/2 Clamp, Center Mount, Bare Metal, Stainless Steel, MetricMA2153/1 Clamp, Loop Type, Bare Metal, Aluminum, MetricMA2153/2 Clamp, Loop Type, Bare Metal, Stainless Steel, MetricMA2155/1 Clamp, Rectangular Loop, Cushioned Wi
14、th Wedge, Hydrocarbon Fluid Resistant, Aluminum, MetricMA2155/2 Clamp, Rectangular Loop, Cushioned With Wedge, Hydrocarbon Fluid Resistant, Stainless Steel, MetricMA2155/3 Clamp, Rectangular Loop, Cushioned With Wedge, Phosphate Ester Fluid Resistant, Aluminum, MetricMA2155/4 Clamp, Rectangular Loop
15、, Cushioned With Wedge, Phosphate Ester Fluid Resistant, Stainless Steel, MetricMA2155/5 Clamp, Rectangular Loop, Cushioned With Wedge, High Temperature, Stainless Steel, MetricMA2156/1 Clamp, Center Mount, Cushioned, Hydrocarbon Fluid Resistant, MetricMA2156/2 Clamp, Center Mount, Cushioned, Phosph
16、ate Ester Fluid Resistant, MetricMA2156/3 Clamp, Center Mount, Cushioned, High Temperature, MetricSAE INTERNATIONAL MA2150 Page 3 of 16 2.1.2 ASTM Publications: Available from American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103-1187.ASTM A 582 Free Machining Stainles
17、s Steel and Heat-Resisting Steel Bars, Hot-Rolled or Cold-FinishedASTM D 395 Rubber Property, Compression SetASTM D 412 Rubber Properties in TensionASTM D 471 Rubber Property, Effect of LiquidsASTM D 624 Rubber Property, Tear ResistanceASTM D 1149 Rubber Deterioration - Surface Ozone Cracking in a C
18、hamber (Flat Specimen)ASTM D 2240 Rubber Property - Durometer HardnessASTM D 3182 Rubber - Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanizing SheetsASTM E 18 Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials2.1.3 U.S. Governm
19、ent Publications: Available from Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.A-A-711 Dry Cleaning SolventQQ-P-35 Passivation Treatments for Corrosion Resisting SteelPPP-B-566 Box, Folding, PaperboardPPP-B-576 Box, Wood, Cleated, Veneer, Paper Ov
20、erlaidPPP-B-585 Box, Wood, WireboundPPP-B-591 Boxes, Shipping, Fiberboard, Wood CleatedPPP-B-601 Boxes, Wood, Cleated PlywoodPPP-B-621 Box, Wood, Nailed and Locked-CornerPPP-B-636 Box, Shipping, FiberboardPPP-B-640 Box, Fiberboard, Corrugated, Triple-WallPPP-B-665 Boxes, Paperboard, Metal Edged and
21、ComponentsPPP-B-676 Boxes, SetupMIL-P-116 Preservation, Methods ofMIL-H-5606 Hydraulic Fluid, Petroleum Base, Aircraft, Missile and OrdnanceMIL-T-5624 Turbine Fuel, Aviation, Grades JP-4 and JP-5MIL-H-6088 Heat Treatment of Aluminum Alloys, Process forMIL-H-6875 Heat Treatment of Steels (Aircraft Pr
22、actice), Process forMIL-L-7808 Lubrication Oil, Aircraft Turbine Engine, Synthetic BaseMIL-H-83282 Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, AircraftMIL-STD-100 Engineering Drawing PracticesMIL-STD-105 Sampling Procedures and Tables for Inspection by AttributesMIL-STD-129 Marking
23、for Shipment and StorageMIL-STD-831 Test Reports, Preparation ofSAE INTERNATIONAL MA2150 Page 4 of 16 2.2 Order of Precedence:In the event of conflict between the text of this document and the references cited herein, the text of this document shall take precedence.3. TECHNICAL REQUIREMENTS:3.1 Part
24、 Standards:The individual item requirements shall be as specified herein and in accordance with the applicable part standards. In the event of conflict between the requirements of this document and the part standard, the requirements of the part standard shall govern.3.2 Qualification:The items furn
25、ished under this document shall be products which have been subjected to and successfully passed the qualifications specified in Section 4 of this document. Manufacturers qualified for document MIL-C-85052 need not requalify.3.2.1 The qualification required by this document relates to qualification
26、of the clamp only. It does not infer qualification of clamp installation techniques.3.3 Materials:Clamp band materials and cushioning material shall be as specified on the applicable part standard.3.4 Design and Fabrication:The design and construction of the clamp shall be as specified herein and in
27、 accordance with the applicable part standard.3.4.1 Dimensions and Tolerances: Dimensions and tolerances shall be as specified on the applicable part standard.3.5 Performance:Clamp cushions, clamp bands, and clamp assemblies shall conform to the requirements of this document and the applicable part
28、standard when subjected to the applicable tests specified in this document and the applicable part standard.3.5.1 Clamp Cushion Performance:3.5.1.1 Physical Properties: The cushion material shall meet the physical property requirements (Table 3) specified in the applicable part standard (see 4.5.3.1
29、).SAE INTERNATIONAL MA2150 Page 5 of 16 3.5.1.2 Compression Test: The average compression set value of three cushion material specimens shall not exceed the value specified in the applicable part standard (see 4.5.3.2).3.5.1.3 Flammability: The cushion material shall be tested for flammability in ac
30、cordance with the applicable part standard and as specified herein (see 4.5.3.3).3.5.1.4 Titanium Compatibility: There shall be no evidence of cracking or pitting of the titanium tube specimen when observed with a 5 to 10 power magnifying glass (see 4.5.3.4).3.5.2 Clamp Band Performance:3.5.2.1 Clam
31、p Band Hardness: Clamp band hardness shall be as specified in Note 3 of the applicable part standard.3.5.3 Clamp Assembly Performance:3.5.3.1 Retention: As required by the part standard each clamp shall be tested in accordance with 4.5.4.1 both before and after being subjected to the vibration test
32、(see 4.5.4.2). When tested in accordance with 4.5.4.1, each clamp shall withstand an axial mandrel force as specified in Table 1:3.5.3.2 Vibration: The clamps shall not exhibit any evidence of cushion separation or other deterioration. There shall be no cracking or separation of metal components. Th
33、e transmissibility ratio shall be recorded (see 4.5.4.2.1). See the part standard for those parts requiring vibration testing for qualification.3.5.3.3 Ozone Resistance (When Specified on Applicable Part Standard): The clamps shall not exhibit any evidence of cracking visible to the unaided eye or d
34、istortion of the cushion material (see 4.5.4.3).3.5.3.4 Thermal Shock: The clamps shall not exhibit evidence of cracking, tackiness, or degradation of the cushion material (see 4.5.4.4).3.6 Surface Texture:All surfaces shall have a smooth finish and be free from burrs and sharp edges. The inside edg
35、es of the clamp band shall be rolled or provided with a radius to eliminate sharp edges.TABLE 1 - Clamp Band Thickness Versus Axial ForceClamp Band Thickness Axial Force0.51 mm 6.80 to 20.41 kg0.81 mm 11.34 to 24.95 kg1.02 mm 15.88 to 29.48 kgSAE INTERNATIONAL MA2150 Page 6 of 16 3.7 Identification
36、of Product:3.7.1 Identification of Clamps: All clamps shall be marked as specified on the applicable part standard.3.8 Workmanship:Workmanship shall be of a sufficiently high grade to insure that clamps are of uniform quality and free from burrs, slivers, sharp edges, or other defects which would af
37、fect their service and shall be uniform in appearance without mold flash.4. QUALITY ASSURANCE PROVISIONS:4.1 Responsibility for Inspection:Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herei
38、n. Except as otherwise specified in the contract or purchase order, the contractor may use their own or any other facilities suitable for the performance of the inspection requirements specified herein.4.2 Classification of Inspection:The inspection requirements specified herein are classified as fo
39、llows:a. Qualification inspection (4.3)b. Quality conformance inspection (4.4)4.3 Qualification Inspection:4.3.1 Samples: Samples for qualification tests of clamps shall consist of 12 clamps of each part standard size (-06, -10, -14, -16, -20, -28, -32, -38) plus 20 additional (-28) size clamps. For
40、 qualification of MA2150/1 clamp only, submit 10 additional clamps in size -03. Samples for qualification tests on cushion material shall consist of 20 slabs conforming to ASTM D 3182 for each type of cushion material to be tested. Each slab shall be identified by its part standard number and the di
41、rection of weave in fabric reinforced material. Both clamps and material test slabs shall be supplied for each part standard to be qualified in the quantities indicated herein.SAE INTERNATIONAL MA2150 Page 7 of 16 4.3.2 Inspection Routine: Sample units shall be subjected to qualification inspection
42、specified in Table 2 in the order specified, conducted on applicable specimens.4.3.3 Retention of Qualification: To retain qualification, the contractor shall forward samples for testing at intervals of not more than 2 years. The qualifying activity shall establish the initial reporting date. The qu
43、alifying activity shall specify who will perform the following tests:a. Examination of product (4.5.2)b. Physical properties test (4.5.3.1)c. Vibration test (4.5.4.2), if applicable4.3.4 Identification of Samples: Samples for each dash number shall be separately packaged and forwarded to the testing
44、 facility specified by the qualifying activity. Samples shall be plainly identified by securely attached durable tags marked with the following information:a. Samples for qualification testb. Specification MA2150c. Clamp, Loop, Cushioned, Metricd. Part standard part numbere. Manufacturers part numbe
45、rf. Name of manufacturer/manufacturers FSCM or CAGE numberg. Submitted (date) under authorization (reference letter authorizing the test)TABLE 2 - Qualification InspectionTABLE 2A - Clamp CushionExamination or Test Requirement Test Number of SamplesPhysical properties 3.5.1.1 4.5.3.1 See 4.3.1Compre
46、ssion test 3.5.1.2 4.5.3.2 See 4.3.1Flammability 3.5.1.3 4.5.3.3 See 4.3.1Titanium compatibility 3.5.1.4 4.5.3.4 See 4.3.1TABLE 2B - Clamp AssemblyExamination or Test Requirement Test Number of SamplesExamination of product 3.4 4.5.2 58Retention 3.5.3.1 4.5.4.1 48Vibration 3.5.3.2 4.5.4.2 0Retention
47、 3.5.3.1 4.5.4.1 0Ozone resistance /1/ 3.5.3.3 4.5.4.3 5 (see 4.3.1)Thermal shock 3.5.3.4 4.5.4.4 5 (see 4.3.1)/1/ When specified on applicable part standard.SAE INTERNATIONAL MA2150 Page 8 of 16 4.3.5 Test Report: The contractor shall furnish the activity responsible for qualification with a certif
48、ied test report, in triplicate per MIL-STD-831 showing quantitive results for tests required by this specification. The report shall designate the part standard part number of the clamps submitted. The report shall also include the manufacturers drawing specifying the dimensions of the clamp in the
49、open and in the closed position, and the manufacturer of the cushion material.4.4 Quality Conformance Inspection:Quality conformance inspection shall consist of the tests and inspections specified in Table 3, conducted in accordance with 4.4.2.4.4.1 Inspection Lot: An inspection lot shall consist of clamps for a particular size and material produced under essentially the same manufacturing conditions and presented for inspecti
