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. 2016 by Navistar, Inc. SEPTEMBER 2016 Page 1 of 6 NAVISTAR, INC. Material, Parts, and Process Specificat
2、ions (MPAPS) NUMBER: MPAPS F-1045 Former Designation: TMS-1045 TITLE: Corrosion Resistant Steel Tubing CURRENT REV No.: 1609 DATE: Sept. 2016 WRITTEN/EDITED BY: J. Goldschmidt APPROVED BY: R. Goluch SUPERSEDES: Rev. J April 2008 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION T
3、his 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 l
4、imits prior to use. 1.0 APPLICATION This specification covers three types of double wall, furnace brazed steel tubing, with corrosion resistant coatings, suitable for use in hydraulic brake lines or other applications where improved corrosion resistance is required. Type 1 tubing (hot dip terne coat
5、ing overlaid with a zinc rich organic topcoat) is obsolete, and not to be used in Navistar products. Type 2 uses a hot dip zinc-aluminum coating overlaid with an aluminum rich organic (epoxy) topcoat. Type 3 tubing is Type 2 tubing with a nylon/polyamide covering. 2.0 SCOPE This specification covers
6、 the performance requirements of the tubing and tube assemblies, including coating thickness, corrosion resistance, dimensional tolerances, quality, and source approval. The control of the corrosion protective properties of the tubing is the responsibility of the manufacturer. 2.1 Restricted Chemica
7、l 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 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following Specif
8、ications, Standards, and Regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 NAVISTAR MPAPS B-50 GMW14124 CFR Title 29, Part 1910 NAVISTAR MPAPS A-45, Part I SAE J400 NAVISTAR Supplier Packing and Shipping Std. D-13 ASTM A254 SAE J527 NAVISTAR Engineering D
9、esign Std A-16 ASTM B117 SAE J2334 NUMBER: MPAPS F-1045 TITLE: Corrosion Resistant Steel Tubing REVISION: 1609 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 liabi
10、lity. 2016 by Navistar, Inc. SEPTEMBER 2016 Page 2 of 6 4.0 REQUIREMENTS 4.1 Description of Tubing Types 4.1.1 Type 1 Tube NOT TO BE USED FOR NEW DESIGN 4.1.2 Type 2 Tube This tubing is standard double wall brazed steel tubing (SAE J527) that meets the performance requirements of Grade 1 of MPAPS A-
11、45, Part I. The hot dip coating consists of 95% zinc and 5% aluminum with minor trace elements. Minimum coating weight is 39 g/m (0.13 oz/ft). The tubing is coated with epoxy paint containing uniformly dispersed aluminum flakes or platelets, then baked. 4.1.3 Type 3 Tube Type 3 tubing is Type 2 tubi
12、ng with an adhesive primer layer and a polyamide 12 topcoat. 4.2 Coating Thickness 4.2.1 Type 2 Tube When examined metallographically, the zinc-aluminum metal coating and the aluminum rich epoxy dry film coating will each exhibit a minimum thickness of 3m as measured at any point on the circumferenc
13、e of the tube. 4.2.2 Type 3 Tube Type 3 tubing will meet the coating requirements for Type 2 tubing above. In addition, the polyamide 12 coating will have a film thickness of 150 m minimum. 4.3 Environmental Resistance Evaluation 4.3.1 General Required testing will be performed using production repr
14、esentative tubing samples and fittings. In order to allow fittings to remain functional when pressure testing is required after corrosion testing, the system should be protected during exposure (such as inserting tube fittings into a solid block of aluminum, or placing wax into openings to protect i
15、nterior tubing surfaces). 4.3.2 Gravelometer/Salt Spray Testing 4.3.2.1 Type 2 Tubing A minimum of 2 samples representative of production tubing will be subjected to 1000 hour salt spray exposure per ASTM B117. 4.3.2.1.1 Requirements Tested tubes will not exhibit more than 1.5 mm creepback from scri
16、bes placed longitudinally along the tubing. No other loss of adhesion will be evident after testing. 4.3.2.2 Type 3 Tubing A minimum of 2 samples representative of production tubing will be conditioned at -40C for a minimum of 4 hours prior to performing gravelometer testing per SAE J400 using 5 pin
17、ts of gravel. Tubing should be impacted with gravel within 30 seconds of removal from freezer. Within 24 hour of gravelometer exposure, the specimens will be placed in salt spray per ASTM B117 for 2000 hr. 4.3.2.2.1 Requirements Tested samples will show no red rust in non-gravel impacted areas; red
18、rust is allowed up to 1 mm from impacted areas. No peeling or delamination (i.e., splitting or separation of the nylon into layers) of coating is allowed after testing. NUMBER: MPAPS F-1045 TITLE: Corrosion Resistant Steel Tubing REVISION: 1609 This document is restricted and may not be sent outside
19、 Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. SEPTEMBER 2016 Page 3 of 6 4.3.3 Cyclic Corrosion Testing 4.3.3.1 Type 2 Tubing A minimum of 3 samples representative of production tubin
20、g assemblies will be subjected to 80 cycles cyclic corrosion testing per SAE J2334 or 10 cycles of GMW14124 (Cycle J). 4.3.3.1.1 Requirements After testing, the assemblies will be capable of meeting a 20.7 MPa (3000 psi) burst pressure check. 4.3.3.2 Type 3 Tubing Before testing, make parallel cuts
21、2.4 mm apart and 4 cm long longitudinal to the tube. The cuts must be deep enough to expose the underlying steel substrate. Within 24 hours of scribing, a minimum of 3 samples representative of tubing assemblies will be subjected to 80 cycles cyclic corrosion testing per SAE J2334 or 10 cycles of GM
22、W14124 (Cycle J). 4.3.3.2.1 Requirements The tested assemblies must be capable of meeting a 20.7 MPa (3000 psi) burst pressure check. Also, the polyamide coating shall show no peeling, lifting, or delamination; red rust is allowed only at knife cuts. 4.3.4 Fluid Resistance Testing 4.3.4.1 Type 2 Tub
23、ing Tubing samples will be immersed for 24 hours in DOT 3 brake fluid, diesel fuel, biodiesel, automotive fuel, E85, battery acid, and power steering fluid. 4.3.4.1.1 Requirements After testing, tubing shall show no softening or film defects. 4.3.4.2 Type 3 Tubing Two parallel cuts along the entire
24、length of the tube and spaced 2.4 mm apart will be made through the nylon, exposing the steel substrate. Place six samples per fluid in a sealable container, and fill each jar with the test fluids (DOT 3 brake fluid, diesel fuel, biodiesel, automotive fuel, E85, battery acid, and power steering flui
25、d) such that about half of each sample is submerged in the test fluid. Seal the container and soak the samples at 23C (73F) for 504 hours brake fluid test temperature will be 60C (140F). After the required soak time, remove the samples and dry them with a paper towel. Using a utility knife, make a p
26、erpendicular cut between the two parallel cuts near the end of the sample (which was submerged). With the edge of the blade in the cut, try to lift up or peel back the nylon strip and grab with pliers. Peel until either the section breaks, or the section is removed from the length of the tube. 4.3.4
27、2.1 Requirements There shall be no evidence of blistering or delamination of the nylon prior to the described coating separation procedure. After the coating separation procedure, the sample is considered acceptable if the nylon strip breaks. If it does not break, the strip must show cohesive failu
28、re of the primer (i.e., visible evidence that the primer remains on the nylon strip and tube substrate). NUMBER: MPAPS F-1045 TITLE: Corrosion Resistant Steel Tubing REVISION: 1609 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate
29、Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. SEPTEMBER 2016 Page 4 of 6 4.4 Dimensional Tolerances Finished tube assemblies will conform to specified centerline length with the tolerance shown below. Length (mm) Tolerance (mm) Length (in) Toleran
30、ce (in) 0 - 305 3.0 0 to 12 0.118 306 - 610 3.3 12 to 24 0.130 611 - 915 4.8 24 to 36 0.189 916 -1525 6.3 36 to 60 0.250 1526 - 2134 9.7 60 to 84 0.382 2135 - 3050 12.7 84 to 120 0.500 over 3051 12.7 over 120 0.500 5.0 QUALIFICATION Engineering qualification of sources is required in advance of prod
31、uction shipments. Samples shall be accompanied by test data certifying that all requirements of the specification have been met. 5.1 Quality Control Plan A Quality Control Plan for products supplied to the requirements of this specification will be established by mutual agreement between NAVISTAR an
32、d the supplier. Unless specific exception is noted, the following characteristics, where applicable*, shall be included in the plan as features for management by statistical process control.* * Other characteristics for inclusion in the control plan may be specified on the engineering drawing and/or
33、 purchase order. * See NAVISTAR Engineering Design Standard A-16 5.2 Finished Appearance and Quality Parts and assemblies supplied to the requirements of this specification shall be free of rust, stains, oil, dirt, metal chips, grease, sharp edges, etc., and shall be clean and dry to the touch. The
34、coating shall be uniform and consistent in color, and free from discontinuities, abnormal roughness, chipping, flaking, or loss of adhesion. Type 3 tubing will be supplied as black in color, unless otherwise specified. 5.2.1 Cleanliness Requirements Tubing used for hydraulic brake lines will have in
35、ternal cleanliness conforming to 0.20 g/m2 of internal surface when determined by ASTM A254, Section 8. Tube ends shall be capped to prevent contamination in shipping and handling. 1. Length, overall length (the shortest straight line distance end to end). NUMBER: MPAPS F-1045 TITLE: Corrosion Resis
36、tant Steel Tubing REVISION: 1609 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. 2016 by Navistar, Inc. SEPTEMBER 2016 Page 5 of 6 6.0 SOURCE APPROVAL AN
37、D QUALITY CONTROL 6.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality System Requirements. NAVISTAR will also accept TS-16949 registration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval Process) documentation and app
38、roval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish copies of registration certificates to their Corporate Buyer upon request. 6.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be equivalent in a
39、ll respects to those samples which were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. In the event that changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier sha
40、ll notify NAVISTAR Materials Engineering and Purchasing and Supplier Development of the proposed change(s). Test data indicating conformance to all requirements of this specification, test samples, and new or amended or updated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, P
41、art 1910 shall be submitted with the request for change. 6.3 Process Control The supplier shall either, perform and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidence of the lot having been produced in a state of statisti
42、cal control and with a process capable of providing all required properties. The part supplier and the quality control manager of the using NAVISTAR plant may determine testing and reporting requirements on specific products. 7.0 SHIPPING AND HANDLING Shipping and identification shall be in accordan
43、ce with NAVISTAR Supplier Packing and Shipping Standard D-13. Parts shall be packaged so as to avoid any damage in shipment detrimental to the appearance of the part. 8.0 DESIGNATION ON DRAWINGS Example of note to use on drawings: Steel Tubing, Type 2, per MPAPS F-1045 9.0 TECHNICAL INFORMATION For
44、further information related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15
45、Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ NUMBER: MPAPS F-1045 TITLE: Corrosion Resistant Steel Tubing REVISION: 1609 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. 2016 by Navistar, Inc. SEPTEMBER 2016 Page 6 of 6 REVISION HISTORY Revision Level Change Approved by Date Approved 1609 Updated to MPAPS format. R. Goluch 9/16/2016
