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 8 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS- A-10, PART II Former Designation: CEMS A-10, PART II TITLE: Mechanical Steel Tubing, Part II - Cold Drawn Butt Welded 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
3、DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION 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 an
4、d to determine the applicability of regulatory limits prior to use. Change Notice: Reformatted for MPAPS, Editorial Changes, combined A-10 part II appendix 1.0 APPLICATION This specification is in three parts: Part I - Electrical Resistance Welded Tubing Part II - Cold Drawn Butt Welded Mechanical S
5、teel Tubing Part III - Seamless Tubing International specifications covering other tubular products used by the Company are as follows: Welded and Seamless Steel Pipe 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 th
6、e requirements for cold drawn butt welded mechanical steel tubing used in the Companys products. Also included are two grades of electric welded tubing manufactured to butt welded tolerances. Unless otherwise specified herein, ASTM A512 “Standard Specification for Cold- Drawn Buttweld Carbon Steel M
7、echanical Tubing” will 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 REFERENCES DOCUMENTS Unless otherwise specified, the latest issue of all r
8、eferenced 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-13 NAVISTAR Engineering Design Std A-16 NAVISTAR MPAPS B-50 ASTM A512 A
9、STM A370 ASTM A1040 4.0 GENERAL REQUIREMENTS NUMBER: MPAPS A-10, PART II TITLE Mechanical Steel Tubing Part II - Cold Drawn Butt Welded Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from C
10、orporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc JUNE 2015 Page 2 of 11 4.1 GRADE CLASSIFICATION Cold drawn butt welded tubing is produced in sink drawn and mandrel drawn grades which are classified as shown in Table I. Each of these grades c
11、an be obtained in either the stress relieved or the full annealed condition. Stress relieved tubing will be supplied unless otherwise specified as full annealed. TABLE I GRADE CLASSIFICATION Grade Approx ASTM Designation Description General Size Availability SD A 512 Sink Drawn (Drawn through a die
12、without a mandrel.) Outside Diameters; To 3.50 in (88.9 mm) Wall Thicknesses: 0.035 to 0.500 in (0.89 to 12.70 mm) MD Mandrel Drawn (Drawn Simultaneously through a die and over a mandrel.) SDE Sink Drawn, Electric Resistance Welded (Available only in round tubing.) Outside Diameters; 0.50 to 3.25 in
13、ch) (12.7 to 82.6 mm) Wall Thicknesses: 0.083 to 0.281 in (2.1 to 7.1 mm) MDE Mandrel Drawn, Electric resistance Welded (Available only in round tubing.) EBS Any mechanical steel tubing grade covered in MPAPS A-10, Parts, I, II, and III. CDT Any sink or mandrel drawn tubing grade covered in MPAPS A-
14、10, Parts, I, II, and III. CDM Any mandrel drawn tubing grade covered in MPAPS A-10, Parts, I, II, and III. * For specific size availability for each grade, see “Appendix General Information,” MPAPS A-10 Part I. 4.2 Permissible Alternates When a certain grade is specified on a drawing, it may be des
15、irable 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 Any mechanical steel tubing grade covered in MPAPS A-10, Parts, I, II, and III. SD SDE, MD, MDE, DOM* SDE MDE, DO
16、M* CDT Any SD or MD tubing grade covered in MPAPS A-10, Parts, I, II, and III. CDM Any MD tubing grade covered in MPAPS A-10, Parts, I, II, and III. MD MDE, DOM* MDE DOM* *Requirements for Grade DOM are found in MPAPS A-10, Part I. 4.3 Grades EBS, CDT and CDM 4.3.1 Grades EBS, CDT and CDM are codes
17、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 both engineering and manufacturing requirements. See “Dimensional Tolerances, “ Part III, for diameter and wall thickness tolerances and “Appendix General Information,” Par
18、t II, for discussion of these grades. 4.3.2 When a coded grade is specified on the engineering drawing, the selection of the appropriate tubing within that code should be made by the Plant Metallurgist of the plant ordering the tubing. The NUMBER: MPAPS A-10, PART II TITLE Mechanical Steel Tubing Pa
19、rt II - Cold Drawn Butt Welded Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 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, In
20、c JUNE 2015 Page 3 of 11 Plant Metallurgist should consult the various departments involved from the standpoint of 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 show onl
21、y the coded grade. 4.3.3 When more than one plant is involved in the production of a part, it is the responsibility of the Plant Metallurgist of the originating plant to obtain the approval of the metallurgist from other fabricating works on the selection of the tubing. In general, it should be the
22、metallurgist of the plant having the most critical operation who should decide which tubing is most suitable for his operation. 4.3.4 Outside suppliers furnishing finished parts may use any tubing grade covered within the coded grade shown on the drawing. 4.3.5 Outside suppliers of semi-finished par
23、ts requiring welding, heat treating or machining in International plants must obtain approval of the specific tubing grade and steel from the International Plant Metallurgist of the purchasing plant. 4.4 Chemical Composition When no steel designation is specified, the Plant Metallurgist of the origi
24、nating plant will select the grade of steel from those listed in Table III or IV. Tubing purchased to any SAE/ASTM steel will meet the requirements for chemical composition shown in ASTM A1040 4.5 Mechanical Properties Expected minimum mechanical properties are shown in Tables III and IV. These prop
25、erties can be specified as minimum requirements by design engineers. TABLE III STRESS RELIEVED TUBING* Steel Designation Yield Strength, min Tensile Strength, min Elongation, % In 2 Inches (50 mm), min Rockwell Hardness psi MPa psi MPa 1010 1015 1018 1020 58 000 60 000 62 000 65 000 400 415 430 450
26、63 000 66 000 68 000 71 000 435 455 470 490 15 14 13 11 B 70 - 90 B 70 -100 B 73 -100 B 75 - C 20 1025 1030 1110* 1115* 67 000 70 000 58 000 62 000 460 485 400 430 72 000 80 000 63 000 68 000 495 550 435 470 11 10 15 13 B 78 C 20 B 80 C 20 B 70 100 B 70 100 * Unless otherwise specified all tubing wi
27、ll be furnished in this condition, also called, “Finish annealed.” Slight oxide discoloration will be present. * Only applicable to Grades SD and MD 4.5 Mechanical Properties (Continued) TABLE IV NUMBER: MPAPS A-10, PART II TITLE Mechanical Steel Tubing Part II - Cold Drawn Butt Welded Mechanical St
28、eel Tubing CURRENT ISSUE DATE: June 2015 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 4 of 11 FULL ANNEALED TUBIN
29、G Steel Designation Yield Strength, min Tensile Strength, min Elongation, % In 2 Inches (50 mm), min Rockwell Hardness psi MPa psi MPa 1010 1015 1018 20 000 25 000 28 000 140 170 195 40 000 43 000 46 000 275 295 315 35 34 33 40-65 40 min 45 min 1020 1025 1030 30 000 35 000 40 000 205 240 275 50 000
30、55 000 65 000 345 380 450 32 32 30 50 min 55 min 60 min 4.6 Dimensional Tolerances Tubing purchased to this specification will conform to the following requirements for dimensional tolerances. Grades SD and SDE tubing are normally specified by outside diameter and nominal wall thickness. Grades MD a
31、nd MDE tubing are normally specified by outside diameter and inside diameters. See “Dimensional Tolerances,” Part III, for requirements for Grades EBS, CDT, and CDM. 4.6.1 Round Tubing Ovality tolerance of welded tubing is taken into consideration in the outside diameter and inside diameter toleranc
32、es. Ovality will not exceed the total applicable outside diameter tolerances. TABLE V DIAMETER AND WALL TOLERANCE FOR ROUND TUBING* Grade Outside Diameter, in (mm) Outside Diameter Inside Diameter Wall Thickness, % Plus Minus Plus Minus in mm in mm in mm in mm Plus Minus SD Up to 0.50 (12.7), excl 0
33、.004 0.10 0.0 0.0 - - - - 15* 15 0.50 to 1.50 (12.7 to 38.1), excl. 0.005 0.13 0.0 0.0 - - - - 10* 10 1.50 thru 3.00 (38.1 thru 76.2) 0.010 0.25 0.0 0.0 - - - - 10* 10 SDE 0.50 to 1.50 (12.7 to 38.1) excl. 0.005 0.13 0.0 0.0 - - - - 10 10 1.50 (38.1) and Over 0.010 0.25 0.0 0.0 - - - - 10 10 MD Less
34、 than 0.156 (3.96) wall) Up to 0.50 (12.7), excl. 0.004 0.10 0.0 0.0 0.0 0.0 0.010 0.025 12.5 12.5 0.50 to 1.50 (12.7 to 38.1), excl. 0.005 0.13 0.0 0.0 0.0 0.0 0.005* 0.13* 10 10 1.50 (38.1) and Over 0.010 0.25 0.0 0.0 - - 0.010 0.25 10 10 0.156 (3.96) Wall and Over: 0.50 to 1.50 (12.7 to 38.1), ex
35、cl. 0.005 0.13 0.0 0.0 0.0 0.0 0.005* 0.13* 7 7 1.50 (38.1) and Over 0.010 0.25 0.0 0.0 0.0 0.0 0.010 0.25 7 7 MDE 0.50 to 1.50 (12.7 to 38.1), excl. 0.005 0.13 0.0 0.0 0.0 0.0 0.005 0.13 7 7 1.50 (38.1) and Over 0.010 0.25 0.0 0.0 0.0 0.0 0.010 0.25 7 7 * These tolerances do not apply to full annea
36、led tubing. * Except at the weld line where the weld pad may exceed this figure. * Tubes with an ID less than 0.5 inch (12.7 mm) may require more than 0.005 inch (0.13 mm) ID tolerance and are subject to negotiation between purchaser and supplier. NUMBER: MPAPS A-10, PART II TITLE Mechanical Steel T
37、ubing Part II - Cold Drawn Butt Welded Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 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 Navi
38、star, Inc JUNE 2015 Page 5 of 11 TUBING VI STRAIGHTNESS TOLERANCES FOR ROUND TUBING* Length of Tube Straightness Tolerance Thru 3 ft. (0.9 m) Proportionate to 0.10 in/ft (0.8 mm/m) Over 3 ft. (0.9 m) 0.030 in (0.76 mm) for each 3 ft. (0.9 m) Section * These straightness tolerances do not apply to fu
39、ll annealed tubing nor to long lengths of small diameter tubing TABLE VII CUT LENGTH TOLERANCES FOR ROUND TUBING Tolerances for Specified Length, inch Specified Length Thru 4 ft. Over 4 Thru 10 ft. Over 10 Thru 24 ft. Over 24 ft. OD, inches Thru 2 0.03 0.05 0.12 0.12 and 1.6 For each 10 feet or frac
40、tion Over 24 feet Over 2 0.05 0.06 Tolerances for Specified Length, Millimeters Specified Length Thru 1.2 m Over 1.2 Thru 3.0 m Over 3.0 Thru 7.3 m Over 7.3 m OD, mm Thru 50.8 0.08 1.2 3.2 3.2 and 1.6 For each 3 meters or fraction Over 7.3 meters Over 50.8 1.2 1.6 NUMBER: MPAPS A-10, PART II TITLE M
41、echanical Steel Tubing Part II - Cold Drawn Butt Welded Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 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 liabil
42、ity. 2015 by Navistar, Inc JUNE 2015 Page 6 of 11 4.6.2 Square and Rectangular Tubing (Not applicable to Grades SDE increases in ID and decreases in OD are not allowed. See “Pricing Restricted Tolerances Extras.” NUMBER: MPAPS A-10, PART II TITLE Mechanical Steel Tubing Part II - Cold Drawn Butt Wel
43、ded Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 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 10 of 11 T
44、ABLE I OD PLUS OR ID MINUS TOLERANCES* Outside Diameter Grade DOM Grades SDE & MDE Standard Restricted 80% 50% 30% Inches 0.500 thru 1.499 1.500 thru 1.699 1.700 thru 2.099 0.005 0.005 0.006 0.005 0.010 0.010 0.004 0.008 0.008 0.0025 0.0050 0.0050 0.0015 0.0030 0.0030 2.100 thru 2.499 2.500 thru 2.8
45、99 2.900 thru 3.299 0.007 0.008 0.009 0.010 0.010 0.010 0.008 0.008 0.008 0.0050 0.0050 0.0050 0.0030 0.0030 0.0030 Millimeters 12.70 thru 38.07 38.10 thru 43.15 43.18 thru 53.31 0.13 0.13 0.15 0.13 0.25 0.25 0.10 0.20 0.20 0.06 0.13 0.13 0.04 0.08 0.08 53.34 thru 63.47 63.50 thru 73.63 73.66 thru 8
46、3.79 0.18 0.20 0.23 0.25 0.25 0.25 0.20 0.20 0.20 0.13 0.13 0.13 0.08 0.08 0.08 * ID Tolerances are not applicable to Grade SDE A.4 Heat Treatment All tubing purchased to this specification will be stress relieved unless otherwise specified. This treatment has only a slight effect on the hardness bu
47、t enables the tubing to withstand moderate cold forming. In this condition, the tubing is used for the bulk of mechanical applications requiring moderate ductility, good finish, and little or no cold forming. When tubes are to be expanded, sharply bent or subject to other cold forming, a full anneal can be specified. This treatment greatly reduces the hardness and strength of the tubing. NUMBER: MPAPS A-10, PART II TITLE Mechanical Steel Tubing Part II - Cold Drawn Butt Welded Mechanical Steel Tubing CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside N
