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. 2017 by Navistar, Inc. MAY 2017 Page 1 of 4 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS G-4523 Former Designation: TMS-4523 TITLE: Corrosion-Resistant Zinc-Aluminum Integrally Lubricated Inorganic Coating CURRENT REV No.: 1705 DATE: May 2017 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: February 2006 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED
3、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 and to determine the applica
4、bility of regulatory limits prior to use. 1.0 APPLICATION This specification covers the requirements for a silvery, corrosion resistant, non-electrolytically applied, water-based coating for steel substrates. The coating is heat-converted from an aqueous dispersion of zinc and aluminum flakes, and c
5、ontains a PTFE lubricant dispersed through the film thickness. This coating system is free of both hexavalent and trivalent chromium, and is suitable for high hardness parts since hydrogen embrittlement is not induced by the process. Typical applications include interior and exterior parts requiring
6、 lubrication and good corrosion resistance, externally and internally threaded fasteners M5 and larger, internally recessed fasteners, stampings, brackets, clips, clamps, etc. (For internal recessed fasteners, such as socket head or Torx head screws, it is recommended that the coating be applied via
7、 dip-spin tilt-tumble equipment.) This coating should not be used on parts which will come in contact with uncoated copper, magnesium, or stainless steel, but will provide good bi-metallic corrosion resistance when in contact with aluminum. Coating should not be used on materials which might be adve
8、rsely affected by a cure temperature range of 288-315C (550-600F). The maximum continuous service temperature is 280C (536F). 2.0 SCOPE This specification covers the general coating requirements, part performance, fastener torque-tension requirements, quality, KCC, source approval and quality contro
9、l, packing, shipping, and identification requirements, designation on drawings, and approved products. 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. NUMBE
10、R: MPAPS G- 4523 TITLE: Corrosion-Resistant Zinc-Aluminum Integrally Lubricated Inorganic Coating REVISION: 1705 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 lia
11、bility. 2017 by Navistar, Inc. MAY 2017 Page 2 of 4 3.0 REFERENCE 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 QS-9000 (ISO 9000 or
12、 TS-16949) ASTM D 610 CFR Title 29, Part 1910 SAE/USCAR-11 NAVISTAR IQR Quality Standard ASTM B 117 NAVISTAR Engr. Design Standard A-16 SAE J2334 NAVISTAR Supplier Packing and Shipping Std. D-13. NAVISTAR MPAPS B-50 4.0 GENERAL REQUIREMENTS 4.1 Coating Requirements 4.1.1 Appearance Coated parts shal
13、l be uniform in color, and free from runs, sags, cracks, pores/blisters, and rough spots. The coating shall be dry to the touch, and not feel oily or tacky. 4.1.2 Thickness This coating will typically consist of 2 layers, having a typical total thickness of 6-10 m min. (or coating weight of 24 g/m2
14、min.). The coating shall not have an adverse effect on production assembly and disassembly practices. After coating, the parts must pass the appropriate thread GO gages without sticking or binding. An evaluation of coating thickness on threads will be included in the Quality Control Plan for each pa
15、rt. 4.2 Part Performance 4.2.1 Adhesion After curing, coated parts shall show no flaking, peeling, or loss of adhesion with normal handling. Parts shall show no evidence of blistering, flaking, peeling, or appearance changes, after heating coated parts to 120C for 60 minutes. 4.2.2 Flexibility Coati
16、ng shall withstand normal handling and storage conditions without chipping and shall be capable of withstanding the normal extension and compression of springs and normal flexing of parts such as spring clips during assembly without loss of adhesion. 4.2.3 Corrosion Resistance Coated parts shall be
17、subjected to corrosion testing in neutral salt spray per ASTM B117 and/or cyclic corrosion testing per SAE J2334. Tested parts shall be evaluated per ASTM D 610, Grade 6 or better, and be free of corrosion product after testing per the following schedule: Salt spray testing Cyclic corrosion testing
18、White corrosion Red rust White corrosion Red rust 240 hr 600 hr 10 cycles 40 cycles Threaded parts shall be evaluated on areas other than the threaded portion. NUMBER: MPAPS G- 4523 TITLE: Corrosion-Resistant Zinc-Aluminum Integrally Lubricated Inorganic Coating REVISION: 1705 This document is restr
19、icted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 3 of 4 4.2.4 Torque Tension Requirement 4.2.4.1 Method SAE/USCAR-11 Control parts 7/16 X 2
20、0 UNF or M10 x 1.5 bolts) shall be processed along with each production lot of parts being coated. 4.2.4.2 Required: Control parts will be tested to ensure that the torque values meet the required value of 60 12 Nm to develop a tension of 28.3 kN. Tightening speed shall be 30 3 RPM. 5.0 QUALIFICATIO
21、N Pre-production samples, accompanied by a certified laboratory report indicating conformance to all requirements of this specification, shall be submitted to Truck Development and Technology Center for testing and approval prior to shipment of production parts 5.1 KCC - Quality Control Plan A Quali
22、ty Control Plan for this product will be established by mutual agreement between International and the supplier. Unless specific exception is noted, the following key control characteristics (KCC), where applicable*, shall be included in the plan as features for management by statistical process con
23、trol*. 1. Torque-Tension Value of the control samples 2. Coating Thickness 3. Corrosion Resistance * Other characteristics for inclusion in the control plan may be specified on the engineering drawing and/or purchase order. * See NAVISTAR Engineering Design Standard A-16. 6.0 SOURCE APPROVAL AND QUA
24、LITY CONTROL 6.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to QS-9000 Quality System Requirements. NAVISTAR will also accept ISO 9000 or TS-16949 registration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval Process) documentation a
25、nd approval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish copies of registration certificates to the NAVISTAR Corporate Buyer upon request. 6.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be eq
26、uivalent in all 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
27、 supplier shall 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 CF
28、R Title 29, Part 1910 shall be submitted with the request for change. NUMBER: MPAPS G- 4523 TITLE: Corrosion-Resistant Zinc-Aluminum Integrally Lubricated Inorganic Coating REVISION: 1705 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Cor
29、porate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 4 of 4 6.3 Process Control The supplier shall either perform and report results of tests on specific lots of parts produced or provide statistical evidence of the lot having been p
30、roduced in a state of statistical control and with a process capable of providing all required properties. The part supplier and the plant metallurgist and/or the quality control manager of the using International plant may determine testing and reporting requirements on specific products. 7.0 SHIPP
31、ING, PACKING, AND IDENTIFICATION Shipping and identification shall be in accordance with NAVISTAR Supplier Packing and Shipping Standard D-13. Parts must be sufficiently cured at the time of packing to withstand normal handling and shipping without marring. Parts supplied to this specification will
32、still be able to meet the specified requirements for six months after received by the applicable plant(s) when stored at 5-28C (40-82F) with no direct heat or sunlight. 8.0 DESIGNATION ON DRAWINGS Drawings shall reference this specification as follows: Finish per MPAPS G-4523 9.0 APPROVED PRODUCTS G
33、EOMET 500A (NOF Metal Coatings) 10.0 TECHNICAL INFORMATION For 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 Markit Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ REVISION HISTORY Revision Level Change Approved by Date Approved 1705 Converted to MPAPS R. Goluch 5/5/2017
