NAVISTAR MPAPS A-10 PART III-2015 Seamless Mechanical Steel Tubing.pdf
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1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 1 of 13 NAVISTAR, INC. Material, Parts, and Process Specifications
2、(MPAPS) NUMBER: MPAPS- A-10, PART III Former Designation: CEMS A-10, PART III TITLE: Seamless Mechanical Steel Tubing CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: October 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION
3、 This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory
4、 limits prior to use. Change Notice: Reformatted as MPAPS, Editorial Changes, Added Appendix 1.0 APPLICATION This specification is in three parts: Part I - Electric Resistance Welded Mechanical Steel Tubing Part II - Cold Drawn Butt Welded Mechanical Steel Tubing Part III - Seamless Mechanical Steel
5、 Tubing International specifications covering other steel tubular products used by the Company are as follows: Welded and Seamless Steel MPAPS A-18 Structural Steel Tubing MPAPS A-38 Fluid Line Steel Tubing MPAPS A-45 2.0 SCOPE This part of the specification covers the requirement for seamless mecha
6、nical tubing used in the Companys products. Unless otherwise specified herein, ASTM A519 shall apply. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 3.0 RE
7、FERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following standards, specifications and regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 CFR Title 29, Part 1910 NAVISTAR Manufacturing Std. MS-D-
8、13 NAVISTAR Engineering Design Std A-16 NAVISTAR MPAPS B-50 ASTM A370 ASTM A1040 ASTM A519 4.0 REQUIREMEMTS NUMBER: MPAPS A-10, PART III TITLE Seamless Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without p
9、ermission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc JUNE 2015 Page 2 of 17 4.1 Classification Seamless tubing is produced as either hot finished or cold drawn as shown in Table I. Hot finished tubing may be turned or ground to cl
10、oser dimensional tolerances. TABLE I GRADE CLASSIFICATION* International Grade Obsolete Grade Description General Size Availability* Inches Millimeters HR HF Hot Finished 2.0 thru 12.0 OD 0.095 Wall Thickness 51 thru 305 OD 2.41 thru 50.8 Wall Thickness CD - Cold Drawn (Drawn Simultaneously Through
11、a Die and Over a Mandrel 0.125 thru 12.0 OD 0.222 thru 2.0 Wall Thickness 3.18 thru 305 OD 0.56 thru 50. 8 Wall Thickness EBS CDT CDM - - - Any MD Tubing Grade Covered in MPAPS A-10, Parts I, II, and III. Any SD or MD Tubing Grade Covered in MPAPS A-10, Parts I, II, and III. Any MD Tubing Grade Cove
12、red in MPAPSS A-10, Parts I, II, and III * If no grade is specified, Grade CD tubing will be furnished * For specific size availability for each grade, see “Appendix General Information,” MPAPS A-10 Part II. 4.1.1 Permissible Alternates When a certain grade is specified on a drawing, it may be desir
13、able for manufacturing to use another grade. The permissible alternates for each grade are shown in Table II. TABLE II PERMISSIBLE ALTERNATES Specified Grade Permissible Alternates EBS HR CDT CDM CD Any MD Tubing Grade covered in MPAPS A-10, Parts I, II, and III CD Any SD or MD Tubing Grade covered
14、in MPAPS A-10, Parts I, II, and III Any MD Tubing Grade covered in MPAPS A-10, Parts I, II, and III None 4.2 Grades EBS, CDT, and CDM 4.2.1 Grades EBS, CDT and CDM are codes which allow manufacturing to select a tubing grade covered in Parts I, II, or III, e.g., Grade H-F, Part I, which will satisfy
15、 both engineering and manufacturing requirements. See “Dimensional Tolerances” for diameter and wall thickness tolerances and “Appendix General Information” for discussion of these grades. 4.2.2 When a coded grade is specified on the engineering drawing, the selection of the appropriate tubing withi
16、n the code should be made by agreement between supplier and Navistar Engineering. Navistar Engineering should consider cost, inventory, processing, and so forth, to determine which tubing grade can be used to best advantage. The drawings and engineering specifications for individual parts should sho
17、w only the coded grade. 4.2.3 Outside suppliers furnishing finished parts may consider any tubing grade covered within the coded grade shown on the drawing. NUMBER: MPAPS A-10, PART III TITLE Seamless Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 This document is restricted and may not be se
18、nt outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc JUNE 2015 Page 3 of 17 4.2.4 Outside suppliers of semi-finished parts requiring welding, heat treating, or machining in Internat
19、ional plants, must obtain approval of the specific tubing grade and steel from Navistar Engineering 4.3 Chemical Composition When no steel designation is specified, the plant metallurgist of the originating plant will select the grade of steel from those listed in Tables III, IV, or V. Tubing purcha
20、sed to any ASME grade will meet the requirements for chemical composition shown in the latest issue of the AISI Steel Products Manual titled, “Steel Specialty Tubular Products.” The carbon and alloy steels normally used for seamless mechanical tubing are shown in Tables I, II, and III, of “Appendix
21、General Information,” although other carbon and alloy steels can be used. 4.4 Mechanical Properties The expected minimum mechanical properties shown in Tables III, IV, or V can be specified as minimum requirements by the purchaser. Cold drawn seamless tubing subject to additional cold working after
22、drawing such as bending, upsetting, or ballizing will be ordered stress relieved. This is the responsibility of the using manufacturing plant. Stress relieving will be done at 800 to 1000 F (425 to 540 C). If there is no cold working after drawing, stress relieving is not required unless specified o
23、n the engineering drawing. Other thermal treatments such as annealing or normalizing may be specified where desired. When no heat-treating is specified for cold drawn seamless tubing, it will be furnished unannealed. See “Designation on Drawings and Purchase Orders” or “Appendix- General Information
24、”. TABLE III HOT FINISHED TUBING EXPECTED MINIMUM MECHANICAL PROPERTIES SAE Steel Designation Yield Strength Tensile Strength Elongation Percent in 2 Inches (50 mm) Hardness, Rockwell B psi MPa psi MPa 1010 1015 1018 1020 1025 30 000 30 000 35 000 32 000 35 000 207 207 241 221 241 47 000 48 000 55 0
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