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 2007 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: 724-776-4970 (outside USA)
4、 Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org J524 REV. DEC2007 SURFACE VEHICLE STANDARD Issued 1954-01 Revised 2007-12 Superseding J524 FEB1996 Seamless Low-Carbon Steel Tubing Annealed for Bending and Flaring RATIONALE This five year review of this standard re
5、sulted in changes identified by the bar on the left side of the page and are described as follows: a. Added SAE and other international standards to the “Related Publications“ section because these documents are related to SAE J524 tubing. b. In Section 8, Performance Requirements, removed un-needed
6、 SAE J1677 paragraph numbering to eliminate unnecessary confusion. c. In Section 8, Performance Requirements, added reverse flattening, hardness, tensile and elongation test. 1. SCOPE This SAE Standard covers cold drawn and annealed seamless low-carbon steel pressure tubing intended for use as hydra
7、ulic lines and in other applications requiring tubing of a quality suitable for flaring and bending. 2. REFERENCES 2.1 Applicable Publications The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest version of SAE publicatio
8、ns shall apply. 2.1.1 SAE Publications Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J409 Product AnalysisPermissible Variations from Specified Chemical Analysis of a Heat or Cast of St
9、eel SAE J1677 Tests and Procedures for Steel and Copper Nickel Tubing 2.2 Related Publications The following publications are provided for information purposes only and are not a required part of this document. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reprod
10、uction or networking permitted without license from IHS-,-,-SAE J524 Revised DEC2007 - 2 - 2.2.1 SAE Publications Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J514 Hydraulic Tube Fitti
11、ngs SAE J533 Flares for Tubing SAE J1065 Nominal Reference Working Pressures for Steel Hydraulic Tubing SAE J1453 FittingO-Ring Face Seal SAE J2551 Recommended Practices for Fluid Conductor Metallic Tubing Applications SAE J2592 Carbon Steel Tubing for General UseUnderstanding Nondestructive Testing
12、 for Carbon Steel Tubing SAE J2658 Metallic Tube Conductor Assemblies for Fluid Power and General UseTest Methods for Hydraulic Fluid Power Metallic Tube Assemblies 2.2.2 ISO Publications Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ISO 3304 Pla
13、in end seamless precision steel tubes, technical conditions for delivery ISO 5598 Fluid power systems and componentsVocabulary ISO 8434-2 Metallic tube connections for fluid power and general usePart: 2 37 flare fittings ISO 8434-3 Metallic tube connections for fluid power and general usePart: 3 ORF
14、S fittings ISO 10583 Hydraulic fluid powerTest methods for tube connections ISO 10763 Hydraulic fluid powerPlain-end, seamless and welded steel tubesDimensions and nominal working pressures 2.2.3 ASTM Publications Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, Tel: 610
15、-832-9585, www.astm.org. ASTM A 513 Electric-Resistance-Welded Carbon and Alloy Steel Tubing ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing ASTM A 450/A 450M Standard Specifications for General Requirements for Carbon, Ferritic Alloy and Austenitic Alloy Steel
16、 Tubing Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J524 Revised DEC2007 - 3 - 3. MANUFACTURE The tubing shall be cold drawn to size and after forming shall be annealed in such a manner as to
17、 produce a finished product which will meet all requirements of this document. 4. DIMENSIONS AND TOLERANCES The tolerances applicable to tubing outside diameter are shown in Table 1. The wall thickness shall not vary more than 10% for tubing having 12.7 mm or larger, nominal inside diameter nor more
18、 than 15% for tubing having a smaller nominal inside diameter. Tubing outside diameter and wall thickness shall be as specified by purchaser. TABLE 1 - TUBING OUTSIDE DIAMETER TOLERANCES Nominal Tubing OD(1)(2)mm OD Tolerance mm Up to 25.4 0.10 Over 25.4 to 38.1 inclusive 0.15 Over 38.1 to 50.8 incl
19、usive 0.20 Over 50.8 to 88.9 inclusive 0.25 1. The actual outside diameter shall be the average of the maximum and minimum outside diameters as determined at any one cross section through the tubing. 2. Refer to SAE J514 for nominal tubing outside diameters to be used in conjunction with standard hy
20、draulic tube fittings. 5. QUALITY Lengths of finished tubing shall be reasonably straight and have smooth ends free from burrs. Tubing shall be free from scale and injurious defects and have a workmanlike finish. Surface imperfections such as handling marks, die marks, or shallow pits shall not be c
21、onsidered injurious defects provided the imperfections are within the tolerances specified for diameter and wall thickness. The removal of such surface imperfections is not required. 6. MATERIAL Tubing shall be made from low-carbon steel conforming to the following chemical composition as shown in T
22、able 2. TABLE 2 - CHEMICAL REQUIREMENTS Element Cast or Heat Analysis(1)% by Weight Carbon 0.18 max Manganese 0.30 to 0.60 Phosphorus 0.040 max Sulfur 0.050 max 1. Check analysis tolerance shall be as specified in SAE J409, Table 1. Copyright SAE International Provided by IHS under license with SAEN
23、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J524 Revised DEC2007 - 4 - 7. MECHANICAL PROPERTIES The finished tubing shall have mechanical properties as tabulated in Table 3: TABLE 3 - MECHANICAL PROPERTIES Properties Values Yield Strength, min 170 MPa Ultima
24、te Strength, min 310 MPa Elongation in 50 mm, min 35%(1)Hardness (Rockwell B), max 65(2)1. For tubing having nominal outside diameter of 9.5 mm or less, and/or wall thicknesses of 0.9 mm or less, a minimum elongation of 25% is permissible. 2. The hardness test shall not be required on tubing with a
25、nominal wall thickness of less than 1.65 mm. Such tubing shall meet all other mechanical properties and performance requirements. 8. PERFORMANCE REQUIREMENTS The finished tubing shall satisfactorily meet the following performance tests. All tests are to be conducted in accordance with the procedures
26、 in SAE J1677. 8.1 Flattening Test 8.2 Flaring Test 8.3 Reverse Flattening Test 8.4 Expansion Test 8.5 Hardness Test 8.6 Tensile Test 8.7 Elongation Test 8.8 Pressure Proof Test Performed when agreed upon between the purchaser and the producer (where allowable unit stress of material(s) = 140 MPa (8
27、0% of minimum yield strength). 8.9 Nondestructive Electronic Test This test is to be conducted after all cold-working tube manufacturing operations are performed on the tubing. 9. TEST CERTIFICATES A certificate of compliance to the performance requirements shall be furnished to the purchaser by the
28、 producer if requested in the purchase agreement. 10. CLEANLINESS The inside of tubing shall be clean and free from any contamination that cannot be readily removed by cleaning agents normally used in manufacturing. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo r
29、eproduction or networking permitted without license from IHS-,-,-SAE J524 Revised DEC2007 - 5 - 11. CORROSION PROTECTION The inside and outside of the finished tubing shall be protected against corrosion during shipment and normal storage. If a corrosion preventive compound is applied, it shall be s
30、uch that after normal storage periods it can readily be removed by cleaning agents normally used in manufacturing. Extended corrosion resistance coatings, such as tern coating, galvanizing, epoxy paint, etc., are available and can be supplied at the request of the user. 12. PACKAGING The tubing is t
31、o be packaged in such a way to allow it to be transported and stored, with normal care, without being damaged. Any special packaging will be by agreement between the producer and purchaser. 13. NOTES 13.1 Marginal Indicia The change bar (I) located in the left margin is for the convenience of the us
32、er in locating areas where technical revisions have been made to the previous issue of the report. An (R) symbol to the left of the document title indicates a complete revision of the report. PREPARED BY THE SAE FLUID CONDUCTORS AND CONNECTORS TECHNICAL COMMITTEE S5 METALLIC TUBING Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
