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 ther
2、efrom, 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 2017 SAE International All rights reserved. No part of this
3、publication 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: +1 724-776-49
4、70 (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:/standards.sae.org/AMS3213M AEROSPACE MATERIAL SPECIFICATION AMS3213 REV. M Issued 1942-12 Reaffirmed 2001-10 Rev
5、ised 2017-05 Superseding AMS3213L Acrylonitrile Butadiene (NBR) Rubber Aromatic Fuel Resistant 75 - 85 RATIONALE AMS3213M is a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and mo
6、lded shapes. 1.2 Application Primarily for parts, such as gaskets, diaphragms, bushings, grommets, and sleeves, requiring resistance to aromatic and aliphatic fuels when continuously or alternately exposed to both. 1.3 Safety Hazardous Materials While the materials, methods, applications, and proces
7、ses 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 responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and
8、 to take necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a
9、subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. SAE INTERNATIONAL AMS3213M Page 2 of 8 2.1 SAE Publications Availabl
10、e from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2279 Tolerances Rubber Products AMS2810 Identification and Packaging Elastomeric Products 2.2 ASTM Publications Available from ASTM
11、 International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D297 Standard Test Methods for Rubber Products - Chemical Analysis ASTM D395 Standard Test Methods for Rubber Property - Compression Set ASTM D412 Standard Test Methods for V
12、ulcanized Rubber and Thermoplastic elastomers - Tension ASTM D471 Standard Test Methods for Rubber Property - Effect of Liquids ASTM D518 Standard Test Methods for Rubber Deterioration - Surface Cracking ASTM D573 Standard Test Methods for Rubber Deterioration in an Air Oven ASTM D624 Standard Test
13、Methods for Tear Strenght of Coventional Vulcanized Rubber and Thermoplastic Elastomers ASTM D1149 Standard Test Methods for Rubber Deterioration - Cracking in in an Ozone Controlled Environment ASTM D2137 Standard Test Methods for Rubber Property - Brittleness Point of Flexible Polymers and Coated
14、Fabrics ASTM D2240 Standard Test Methods for Rubber Property - Durometer Hardness 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be a compound, based on an acrylonitrilebutadiene (NBR) elastomer, suitably cured to produce a product meeting the requirements of 3.2. 3.2 Properties The product shall conf
15、orm to the following requirements; tests shall be performed on the product supplied and in accordance with specified ASTM methods, insofar as practicable: SAE INTERNATIONAL AMS3213M Page 3 of 8 Table 1 - Properties Paragraph Test Requirement Test Method 3.2.1 As Received 3.2.1.1 Hardness, Durometer
16、“A“ 80 5 ASTM D2240 3.2.1.2 Tensile Strength, minimum 1500 psi (10.3 MPa) ASTM D412, Die B or C 3.2.1.3 Elongation, minimum 150% ASTM D412, Die B or C 3.2.1.4 Tensile Stress at 100% Elongation, maximum 1000 psi (6.89 MPa) ASTM D412, Die B or C Stretch specimen twice to 125% elongation within 5 minut
17、es before testing. 3.2.1.5 Tear Resistance, minimum 80% of Prepro- duction Value ASTM D624, Die B 3.2.1.6 Specific Gravity Preproduction Value 0.02 ASTM D297 3.2.2 Aliphatic Fuel Resistance: (After 24 hours drying at 158 F 2 F (70 C 1 C) ASTM D471 Medium: ASTM Ref. Fuel A Temperature: 68 to 86 F (20
18、 to 30 C) Time: 24 hours 0.5 hour 3.2.2.1 Volume Change, maximum -5% 3.2.3 Aromatic Fuel Resistance: (Immediate Deteriorated Properties) 3.2.3.1 Hardness Change, Durometer “A“ -20 to 0 ASTM D471 Medium: ASTM Ref. Fuel B Temperature: 68 to 86 F (20 to 30 C) Time: 166 hours 0.5 hour 3.2.3.2 Tensile St
19、rength, Change, maximum 3.2.3.2.1 For parts other than extrusions -40% 3.2.3.2.2 For extruded parts -45% 3.2.3.3 Elongation Change, maximum -45% SAE INTERNATIONAL AMS3213M Page 4 of 8 Table 1 - Properties (continued) Paragraph Test Requirement Test Method 3.2.3.4 Volume Change in 24 hours 0 to + 35%
20、 3.2.3.5 Volume Change in 168 hours 0 to + 35% 3.2.3.6 Volume Change on Drying (after 168 hours immersion) at 158 F 2 F (70 C 1 C) for 24 hours, maximum 3.2.3.6.1 Parts with cross section or thickness 0.110 inch (2.79 mm) and under -8% 3.2.3.6.2 Parts with cross section or thickness 0.110 inch (2.79
21、 mm) -5% 3.2.4 Dry Heat Resistance: 3.2.4.1 Hardness Change, Durometer “A“ 0 to +10 ASTM D573 Temperature: 212 F 2 F (100 C 1 C) Time: 70 hours 0.5 hour 3.2.4.2 Tensile Strength Change, maximum -20% 3.2.4.3 Elongation Change, maximum -40% 3.2.5 Compression Set: 3.2.5.1 Percent of Original Deflection
22、, maximum ASTM D395, Method B Temperature: 212 F 2 F (100 C 1 C) Time: 70 hours 0.5 hour 3.2.5.1.1 For parts other than extrusions 50 3.2.5.1.2 For extruded parts 60 3.2.6 Low-Temperature Resistance: 3.2.6.1 Brittleness Pass ASTM D2137, Method A Temperature: 0 F 2 F (-18 C 1 C) Time: 10 minutes 1 mi
23、nute SAE INTERNATIONAL AMS3213M Page 5 of 8 3.2.7 Weathering The product shall show no evidence of cracking when tested in accordance with ASTM D1149 for 7 days at 104 F 2 F (40 C 1 C). Test specimens shall be prepared and mounted in accordance with ASTM D518, Method B. 3.3 Quality The product, as r
24、eceived by purchaser, shall be uniform in quality and condition, smooth, as free from foreign materials as commercially practicable, and free from imperfections detrimental to usage of the product. 3.4 Tolerances Shall conform to all applicable requirements of AMS2279. 4. QUALITY ASSURANCE PROVISION
25、S 4.1 Responsibility for Inspection The vendor of the product shall supply all samples for vendors tests and shall be responsible for performing all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to
26、the requirements of this specification. 4.2 Classification of Tests 4.2.1 Acceptance Tests Tests for the following requirements are acceptance tests and shall be performed on each lot: Table 2 Requirement Paragraph Hardness, as received 3.2.1.1 Tensile Strength, as received 3.2.1.2 Elongation, as re
27、ceived 3.2.1.3 Specific Gravity 3.2.1.6 Compression Set 3.2.5 SAE INTERNATIONAL AMS3213M Page 6 of 8 4.2.2 Periodic Tests Tests for the following requirements are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser: Table
28、3 Requirement Paragraph Tensile Stress at 100% Elongation, as received 3.2.1.4 Tear Resistance 3.2.1.5 Volume Change in Aliphatic Fuel 3.2.2.1 Volume Change in Aromatic Fuel 3.2.3.4 4.2.3 Preproduction Tests Tests for all technical requirements are preproduction tests and shall be performed prior to
29、 or on the initial shipment of the product to a purchaser, when a change in ingredients and/or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing Shall be as follows: 4.3.1 For Acceptance Tests Sufficient product shall b
30、e taken at random from each lot to perform all required tests. The number of determinations for each requirement shall be as specified in the applicable test procedure or, if not specified therein, not less than three. 4.3.1.1 If specimens cannot be prepared from the product, ASTM test specimens pre
31、pared from the same batch and state of cure shall be used. When the product is an extrusion of such shape that suitable test specimens cannot be cut from the product, a separate flat strip test sample from the same production lot shall be supplied upon request. This strip shall be prepared from tubi
32、ng 1.000 inch 0.063 inch (25.40 mm 1.60 mm) in OD by 0.075 inch 0.008 inch (1.90 mm 0.20) in wall thickness, mechanically slit and flattened into a strip while being extruded, and cured in the same manner as production product. When the product is a molded shape from which test specimens cannot be c
33、ut, a slab, 6 in2(152 mm) by 0.075 inch 0.008 inch (1.90 mm 0.20 mm) thick, molded from the same batch of compound shall be supplied upon request. 4.3.1.2 A lot shall be all product from the same batch of compound processed in one continuous run and presented for vendors inspection at one time. An i
34、nspection lot shall not exceed 500 pounds (227 kg) and may be packaged in smaller quantities and delivered under the basic lot approval provided lot identification is maintained. 4.3.1.3 A batch shall be the quantity of compound run through a mill or mixer at one time. 4.3.1.4 When a statistical sam
35、pling plan has been agreed upon by purchaser and vendor, sampling shall be in accordance with such plan in lieu of sampling as in 4.3.1 and the report of 4.5 shall state that such plan was used. SAE INTERNATIONAL AMS3213M Page 7 of 8 4.3.2 For Periodic Tests and Preproduction Tests As agreed upon by
36、 purchaser and vendor. 4.4 Approval 4.4.1 Sample product shall be approved by purchaser before product for production use is supplied, unless such approval be waived by purchaser. Results of tests on production product shall be essentially equivalent to those on the approved sample. 4.4.2 Vendor sha
37、ll use ingredients, manufacturing procedures, processes, and methods of inspection on production product which are essentially the same as those used on the approved sample product. If necessary to make any change in ingredients, in type of equipment for processing, or in manufacturing procedures, v
38、endor shall submit for reapproval a statement of the proposed changes in ingredients and/or processing, and, when requested, sample product. Production product made by the revised procedure shall not be shipped prior to receipt of reapproval. 4.5 Reports The vendor of the product shall furnish with
39、each shipment a report showing the results of tests to determine conformance to the acceptance test requirements and, when performed, to the periodic test requirements, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, lot
40、 number, AMS3213M, vendors compound number, form and size or part number, and quantity. 4.6 Resampling and Retesting If any specimen used in the above tests fails to meet the specified requirements, disposition of the product may be based on the results of testing three additional specimens for each
41、 original nonconforming specimen. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the product represented. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Identification and Packaging Shall be in accordance with AMS2810. 6. AC
42、KNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATIONAL AMS
43、3213M Page 8 of 8 8. NOTES 8.1 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
44、indicates 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. 8.2 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and
45、 properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.3 Purchase Documents should specify not less than the following: Title, number, and date of this specification Form and size or part number of product desired Quantity of product desired Level A packaging, if required (see AMS2810) PREPARED BY AMS COMMITTEE “CE“
