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 2009 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 SURFACEVEHICLE STANDARD J2833 AUG2009 Issued 2009-08 Welded and Cold-Drawn, High Strength (690 MPa Tensile Strength) Low Alloy Steel Hydraulic Tubing, Stress Relieved Annealed for Bending and Flaring RATIONALE The wo
5、rking pressures of the modern day mobile equipment hydraulic systems have risen dramatically as compared to the hydraulic pressures in the past. This new hydraulic tubing material has been developed to fill the needs of the hydraulic industry by providing a tube material matched with modern day high
6、 pressure hydraulic hose and connectors to help resolve the hydraulic system space constraints and routing issues faced by todays system designers in the hydraulic mobile equipment industry. Aircraft and Aerospace applications were not considered during the preparation of this document. 1. SCOPE Thi
7、s specification covers sub-critically annealed electric resistance welded and cold-drawn single-wall high strength low alloy steel tubing intended for use in hydraulic pressure lines and in other applications requiring tubing of a quality suitable for bending, flaring, cold forming, welding and braz
8、ing. The grade of material produced to this specification is of micro-alloy content and is considerably stronger and intended to service higher pressure applications using thinner walls than like sizes of the grades of material specified in SAE J525, SAE J2467 and SAE J2614. Due to the alloy content
9、 of the material, the forming characteristics of the finished tube are equal to or better, when compared to SAE J525, SAE J2467 and SAE J2614. Nominal reference working pressures for this tubing are listed in ISO 10763 and SAE J1065. Caution: When brazing or welding is used as a tube end joining met
10、hod, the structural integrity of the tube material can potentially be compromised due to the degradation of the areas affected by the thermal effect applied to the tubing; therefore, the ISO 10763 and SAE J1065 nominal reference working pressures may not be applicable. Brazed and/or welded tube asse
11、mbly configurations made to specific geometry and components bill of material in association with this material, may require qualification testing in accordance with ISO 19879 Test Methods for Hydraulic Fluid Power Connections. Cold forming the tube end configurations avoids this systemic testing by
12、 not compromising the tube material structural integrity. 2. REFERENCES 2.1 Applicable Publications The following publications form a part of this specification to extent specified herein. Unless other specified, the latest issue of the SAE publications shall apply. SAE J2833 Issued AUG2009 Page 2 o
13、f 7 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 724-776-4970 (outside USA), www.sae.org. SAE J409 Product AnalysisPermissible Variations from Specified Chemical Analysis of a Heat or Cast of
14、Steel SAE J525 Welded and Cold Drawn Low-Carbon Steel Tubing Annealed for Bending and Flaring SAE J533 Flares for Tubing SAE J1065 Nominal Reference Working Pressures for Steel Hydraulic Tubing SAE J1677 Tests and Procedures for Steel and Copper Nickel Tubing SAE J2467 Welded and Cold-Drawn, SAE 102
15、1 Carbon Steel Tubing Normalized for Bending and Flaring SAE J2614 Welded and Cold-Drawn, High Strength Low Alloy Steel Hydraulic Tubing, Sub-Critically Annealed for Bending and Flaring 2.1.2 ISO Publications Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.a
16、nsi.org. ISO 10763 Plain-end, seamless and welded steel tubesDimensions and nominal working pressures ISO 19879 Metallic tube connections for fluid power and general useTest methods for hydraulic fluid power connections 2.2 Related Publications The following publications are provided for information
17、al purposes only and are not a required part of this document. 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 724-776-4970 (outside USA), www.sae.org. SAE J514 Hydraulic Tube Fittings SAE J518 H
18、ydraulic Flanged Tube, Pipe, and Hose Connections, Four-Bolt Split Flange Type SAE J1392 Steel, High Strength, Hot Rolled Sheet and Strip, Cold Rolled Sheet, and Coated Sheet SAE J1453 FittingO-Ring Face Seal SAE J2551 Recommended Practices for Fluid Conductor Metallic Tubing Applications SAE J2833
19、Issued AUG2009 Page 3 of 7 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 Plain end seamless precision steel tubesTechnical conditions for delivery ISO 3305 Plain end welded precision steel tubesTechnical conditions
20、 for delivery ISO 4200 Plain end steel tubes, welded and seamlessGeneral tables of dimensions and masses per unit length ISO 4397 Connectors and associated componentsNominal outside diameters of tubes and nominal inside diameters of hoses ISO 4399 Connectors and associated componentsNominal pressure
21、s ISO 5598 Fluid power systems and componentsVocabulary ISO 6162 Four-screw split-flange connections ISO 6605 Tests and test procedures ISO 8434 Metallic tube connections for fluid power and general use ISO 10583 Test methods for tube connections 2.2.3 EN Publications Available from ANSI, 25 West 43
22、rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. EN 10305-2 Steel tubes for precision applicationsTechnical delivery conditionsPart 2: Welded cold drawn tubes EN 10305-4 Steel tubes for precision applicationsTechnical delivery conditionsPart 4: Seamless cold drawn tubes for hydra
23、ulic and pneumatic power systems 2.2.4 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 513 Standard Specification for Electric-Resistance-Welded Carbon and Alloy Steel Tubing 3. MANUF
24、ACTURE The tubing shall be made from a single strip of steel shaped into a tubular shape, the edges of which are joined and fused by electric resistance welding and the tubing hollows are then drawn over a mandrel to the size dimensions shown in Table 1 and Table 2. The tubing shall be stress reliev
25、ed annealed via a controlled method to 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 tolerances applicable to tubing wall thickness are shown in Table 2. For s
26、pecific common ODs and wall sizes, see ISO 10763 for metric tubing and SAE J1065 for inch tubing. Particular attention shall be given to areas adjacent to the weld to insure against thin spots and/or sharp indentations. SAE J2833 Issued AUG2009 Page 4 of 7 TABLE 1 - TUBING OUTSIDE DIAMETER TOLERANCE
27、 Nominal Tubing OD(1)mm Tube OD and ID Tolerance mm Up to 10 0.05 Over 10 to 16 0.06 Over 16 to 50 0.08 Over 50 to 60 0.10 Over 60 to 80 0.13 Over 80 to 110 0.15 1. OD measurements shall be taken at least 50 mm from the end of tubing. TABLE 2 - TUBING WALL THICKNESS TOLERANCES Wall Thickness Range m
28、m For Nominal TubingOutside Diameter Through 22 mm (1) mm For Nominal tubing Outside Diameter Over 22 mm Through 48 mm (1)mm For Nominal TubingOutside Diameter Over 48 mm Through 101.60 (1)mm Up to 0.8 0.05 0.05 0.05 Over 0.8 to 2.4 0.05 + 0.05 -0.08 + 0.05 -0.08 Over 2.4 to 3.3 + 0.05 -0.08 + 0.05
29、-0.10 0.08 Over 3.3 to 3.7 + 0.05 -0.10 0.08 Over 3.7 to 4.5 + 0.08 -0.10 + 0.08 -0.10 Over 4.5 to 5.5 0.10 + 0.08 -0.13 Over 5.5 + 0.10 -0.15 + 0.10 -0.15 1. Plus tolerances include allowance for crown on flat-rolled steel.5. MANUFACTURING STANDARDS 5.1 Straightness Tubing shall be straightened to
30、a tolerance of 0.8 mm in 1000 mm. Straightness tolerances shall be measured by placing a 1000 mm straight edge against the tube while lying on its neutral axis. The point of maximum deflection of the tube from the straight edge should not be more than allowed by the specification when measured with
31、a feeler gauge. 5.2 Tubing End Condition The tubing will be produced using normal mill cut off practices. This shall include, but not limited to, punch-cut ends, double-cut ends and rotary-cut ends. Care shall be taken to minimize the distortion of the tube ends. Distortion of the tube must not affe
32、ct the normal re-cutting processes that will be performed by the end user. Ends that require further processing will be addressed by agreement between the producer and the tube purchaser. 5.3 Finish The outside surface finish of the tube is critical to prevent possible leak paths on double flare con
33、nections, mechanical formed connections or applications where the outside surface of the tube becomes the sealing surface of the finished connection. The outside surface finish of the tube shall be free of excessive roll marks, score marks, chatter marks or other surface imperfections that may be co
34、nsidered detrimental to the function of the finished tube. SAE J2833 Issued AUG2009 Page 5 of 7 5.4 Thermal Treatment The tubing is to be stress relieved annealed via a controlled method to produce a finished product, which will meet all requirements of this document. Special attention to the mechan
35、ical properties, especially the Rockwell B92 Hardness Target, should be made to produce tubing suitable for bending and forming for hydraulic pressure applications. However, to obtain acceptable hardness characteristics, the yield strength and the tensile strength shall not be compromised and 15% mi
36、nimum elongation shall be maintained. 6. MATERIAL The tubing shall be made from alloy steel strip conforming to the chemical composition in Table 3. The steel shall be made by the open-hearth basic oxygen or electric furnace process. A ladle analysis of each heat shall be made to determine the perce
37、ntages of the elements specified. The chemical composition thus determined shall be reported to the purchaser or purchasers representative, if requested, and shall be conform to the requirements specified. If a check analysis is required, the tolerances shall be as specified in SAE J409, Table 3. TA
38、BLE 3 - CHEMICAL REQUIREMENTS Element Cast or Heat Analysis, Weight % Carbon 0.26 Max Manganese 1.60 Sulfur 0.035 Max Phosphorus 0.035 MaxSilicon 0.35 Max Aluminum 0.020 MinMicro Alloying Elements 0.15 Max(1)1. Additions of Nb, Cb, Ti and V are permitted at the discretion of the manufacturer. The co
39、ntents of these additions are to be reported. All other elements should not be intentionally added without agreement of the purchaser except for elements added to aid with or finish the casting. 7. MECHANICAL PROPERTIES The finished tubing shall have mechanical properties as shown in Table 4. TABLE
40、4 - MECHANICAL PROPERTIES Properties Values Yield Strength, Minimum 620 MPa Tensile Strength, Minimum 690 MPa Elongation in 50 mm, Minimum 15% Minimum Hardness Target Rockwell B92(1)Hardness Maximum Rockwell B100(1)1. The hardness test shall not be required on tubing with a nominal wall thickness of
41、 less than 1.65 mm. Such tubing shall meet all other mechanical properties and performance requirements. SAE J2833 Issued AUG2009 Page 6 of 7 8. PERFORMANCE REQUIREMENTS The finished tubing shall satisfactorily meet the following performance tests. All tests are to be conducted in accordance with th
42、e procedures 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 To be performed when agreed upon between the purchaser and the producer. 8.9 Nondestructive Electronic Test Th
43、is 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 producer if requested in the purchase agreement. The tube producer
44、shall be able to certify that each heat lot of the material used to produce the tubing complies with the performance requirements. 10. CLEANLINESS The inside and outside surfaces of the finished tubing shall be commercially bright, clean and free from grease, oxide scale, carbon deposits and any oth
45、er contamination that can not readily be removed by cleaning agents normally used in manufacturing plants. 11. CORROSION PROTECTION The inside and outside surfaces of the finished tubing shall be protected against corrosion during shipment and normal storage. If a corrosion preventive compound is ap
46、plied, it shall be such that after normal periods, it can be readily removed by cleaning agents normally used in manufacturing plants. 12. PACKAGING The tubing is to be packaged in such a way to allow it to be transported and stored, with normal care, without being damaged. Any special packaging sha
47、ll be by agreement between the producer and the purchaser. SAE J2833 Issued AUG2009 Page 7 of 7 13. NOTES 13.1 Marginal Indicia A change bar (I) 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 pre
48、vious 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 SAE METALLIC TUBING COMMITTEE C5 OF THE SAE FLUID CONDUCTORS AND CONNECTORS TECHNICAL STEERING COMMITTEE
