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 2016 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:/www.sae.org/technical/standards/J524_201607 SURFACE VEHICLE STANDARD J524 JUL2016 Issued 1954-01 Revised 2016-07
5、Superseding J524 DEC2007 Seamless Low-Carbon Steel Tubing Annealed for Bending and Flaring RATIONALE This five year review of the SAE J524 standard incorporates revisions requested by producers, fabricators and users of this material type. The updates include the following: 1. Added A recommendation
6、 for the use of metric size materials. 2. Edited applicable and related documents listing. 3. Revised straightness section to comply with latest verbiage. 4. Revised tube end condition section to comply with latest verbiage. 5. Revised surface finish section to comply with latest verbiage. 6. Update
7、d cleanliness section to comply with latest verbiage. 7. Updated test certificate section to comply with latest verbiage. 8. Updated corrosion protection section to comply with latest verbiage. 9. Update packaging section to comply with latest verbiage. 1. SCOPE This SAE Standard covers cold drawn a
8、nd annealed seamless low-carbon steel pressure tubing intended for use as hydraulic lines and in other applications requiring tubing of a quality suitable for flaring and bending. In an effort to standardize within a global marketplace and ensuring that companies can remain competitive in an interna
9、tional market it is the intent to convert to metric tube sizes which will: x Lead to one global system x Guide users to preferred system x Reduce complexity x Eliminate inventory duplications SAE INTERNATIONAL J524 JUL2016 Page 2 of 6 2. REFERENCES 2.1 Applicable Documents The following publications
10、 form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest version of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or
11、+1 724-776-4970 (outside USA), www.sae.org. SAE J409 Product Analysis - Permissible Variations from Specified Chemical Analysis of a Heat or Cast of Steel SAE J1677 Tests and Procedures for Steel and Copper Nickel Tubing 2.2 Related Publications The following publications are provided for informatio
12、n purposes only and are not a required part of this SAE Technical Report. 2.2.1 SAE Publications Available 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. SAE J514 Hydraulic Tube Fitti
13、ngs SAE J533 Flares for Tubing SAE J1065 Nominal Reference Working Pressures for Steel Hydraulic Tubing SAE J1453-1 Specification for O-Ring Face Seal Connectors: Part 1 Tube Connection Details and Common Requirements for Performance and Tests SAE J1453-2 Specification for O-Ring Face Seal Connector
14、s: Part 2 Requirements, Dimensions, and Tests For Steel Unions, Bulkheads, Swivels, Braze Sleeves, Braze-on Tube Ends, Caps, and Connectors with ISO 6149-2 Metric Stud Ends and ISO 6162 4-Bolt Flange Heads SAE J1453-3 Specification for O-Ring Face Seal Connectors: Part 3 Requirements, Dimensions, an
15、d Tests for Steel Unions, Bulkheads, Swivels, Braze Sleeves, Caps, and Connectors with SAE J1926-2 Inch Stud Ends SAE J2551-1 Recommended Practices for Fluid Conductor Carbon, Alloy and High Strength Low Alloy Steel Tubing Applications-Part 1: Design and Fabrication SAE J2551-2 Recommended Practices
16、 for Fluid Conductor Carbon, Alloy and High Strength Low Alloy Steel Tubing Applications-Part 2: General Specifications and Performance Requirements SAE J2551-3 Recommended Practice for Fluid Conductor Carbon, Alloy and High Strength Low Alloy Steel Tubing Applications-Part 3: Procurement SAE J2592
17、Carbon Steel Tubing for General Use - Understanding Nondestructive Testing for Carbon Steel Tubing SAE INTERNATIONAL J524 JUL2016 Page 3 of 6 2.2.2 ISO and EN Publications Available from American National Standards Institute, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.
18、org. ISO 3304 Plain end seamless precision steel tubes, technical conditions for delivery ISO 5598 Fluid power systems and components - Vocabulary ISO 8434-2 Metallic tube connections for fluid power and general use - Part: 2 37 flare fittings ISO 8434-3 Metallic tube connections for fluid power and
19、 general use - Part: 3 ORFS fittings ISO 10583 Hydraulic fluid power - Test methods for tube connections ISO 10763 Hydraulic fluid power - Plain-end, seamless and welded steel tubes - Dimensions and nominal working pressures ISO 19879 Metallic tube connections for fluid power and general use - Test
20、methods for hydraulic fluid power connections EN 10305-1 Steel Tubes for Precision Applications-Technical Delivery Conditions-Part 1 Seamless Cold Drawn Tubes; Rev 10 dated 2/28/2010 EN 10305-4 Steel Tubes for Precision Applications-Technical Delivery Condition-Part 4 Seamless Cold Drawn Tubes for H
21、ydraulic and Pneumatic Power Systems; Rev 11 dated 2-28/2011 2.2.3 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 A519 Standard Specification for Seamless Carbon and Alloy Steel Mechani
22、cal Tubing ASTM A 450/A 450M Standard Specifications for General Requirements for Carbon, Ferritic Alloy and Austenitic Alloy Steel Tubing ASTM E213-09 Standard Practice for Ultrasonic Testing of Metal Pipe and Steel Tube ASTM E309-11 Standard Practice for Eddy Current Examination of Steel Tubular P
23、roducts using Magnetic Saturation ASTM E570-09 Standard Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products 3. MANUFACTURE The tubing shall be cold drawn and annealed to produce a finished product which will meet all requirements of this document. 4. DIMENSIONS AND TOLERANC
24、ES The tolerances applicable to tubing outside diameter are shown in Table 1. The wall thickness shall not vary more than r10% for tubing having 12.7 mm or larger, nominal inside diameter nor more than r15% for tubing having a smaller nominal inside diameter. Tubing outside diameter and wall thickne
25、ss shall be as specified by purchaser. SAE INTERNATIONAL J524 JUL2016 Page 4 of 6 Table 1 - Tubing outside diameter tolerances Nominal Tubing OD(1)(2)mm OD Tolerance r mm Up to 25.4 0.10 Over 25.4 to 38.1 inclusive 0.15 Over 38.1 to 50.8 inclusive 0.20 Over 50.8 to 88.9 inclusive 0.25 1. The actual
26、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 hydraulic tube fittings. 5. QUALITY 5.1 Straightness Tubing
27、shall be straightened to a tolerance of 1 mm over a 1000 mm length 5.2 Tube end Condition The tubing shall be produced using normal mill cut-off practices, e.g. punch-cut ends, double cut ends or rotary-cut ends. Tube end distortion must be minimized; end condition shall not affect normal re-cut pro
28、cesses performed by the end user. Extraordinary end cut processing requirements shall be defined by agreement between the producer and purchaser. 5.3 Surface Condition The outside and inside surface condition of the tube are critical in order to prevent possible leak paths on flared fittings, mechan
29、ical form fittings, or other applications where the surface of the tube becomes the sealing surface. The surface of the tube shall be free of excessive roll marks, score marks, chatter marks, or other surface imperfections that are considered detrimental to the function of the tubing. 6. MATERIAL Tu
30、bing shall be made from low-carbon steel conforming to the following chemical composition as shown in Table 2. Table 2 - Chemical requirements Element Cast or Heat Analysis(1)% by Weight Carbon 0.18 maxManganese 0.30 to 0.60 Phosphorus 0.040 max Sulfur 0.05 ma1. Product analysis tolerance shall be a
31、s specified in SAE J409, Table 1. 7. MECHANICAL PROPERTIES The finished tubing shall have mechanical properties as tabulated in Table 3: SAE INTERNATIONAL J524 JUL2016 Page 5 of 6 Table 3 - Mechanical properties Properties Values Yield Strength, min 170 MPa Ultimate Strength, min 310 MPa Elongation
32、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 nominal wall thickness of less than
33、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 in SAE J1677. 8.1 Flattening Test 8
34、.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 NOTE: Pressure Proof Test performed when agreed upon between the purchaser and the producer (where allowable unit stress of material(s) = 140 MPa (80% of mini
35、mum yield strength). 8.9 Nondestructive Electronic Test NOTE: Nondestructive Electronic 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
36、 purchaser by the producer, if requested in the purchase agreement. The tube producer shall be able to certify that each heat lot and unique production run of tubing complies with the performance requirement. 10. CLEANLINESS The inside and outside surfaces of the finished tubing shall be commerciall
37、y bright, clean, and free from grease, oxide scale, carbon deposits, and any other contamination that cannot readily be removed by cleaning agents normally used in manufacturing plants. SAE INTERNATIONAL J524 JUL2016 Page 6 of 6 11. CORROSION PROTECTION The inside and outside of the finished tubing
38、shall be protected against corrosion during shipment and normal storage. If a corrosion preventive compound is applied, it shall be such that after normal storage periods it can readily be removed by cleaning agents normally used in manufacturing. A specific corrosion resistant coating may be specif
39、ied by the purchaser. 12. PACKAGING The tubing shall be packaged in such a way to allow it to be transported and stored, with normal care, without being damaged. Any special packaging requirements shall be by agreement between the producer and purchaser. 13. NOTES 13.1 Revision Indicator A change ba
40、r (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 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. PREPARED BY THE SAE FLUID CONDUCTORS AND CONNECTORS TECHNICAL STEERING COMMITTEE C5 METALLIC TUBING COMMITTEE
