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. MARCH 2017 Page 1 of 4 NAVISTAR, INC. Material, Parts, and Process Specifications
2、(MPAPS) NUMBER: MPAPS G-4525 Former Designation: TMS-4525 TITLE: Corrosion Protective Coating for Use with Treated Wood CURRENT REV No.: 1703 DATE: March 2017 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: Rev. 0908 Aug. 2009 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURREN
3、T 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 applicability of
4、regulatory limits prior to use. 1.0 APPLICATION This specification covers the requirements for a corrosion resistant, duplex coating system which combines an electroplated zinc and chromate substrate with an organic topcoat. This coating system must be free of hexavalent chromium. This finish is int
5、ended for use on ferrous fasteners and small parts used in contact with treated wood, such as ACQ (alkaline copper quaternary) and other commercially available wood treatments. 2.0 SCOPE This specification covers the general coating requirements, part performance, quality, KCC, source approval and q
6、uality control, packing, shipping, and identification requirements, and designation on drawings. 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 REFEREN
7、CE 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 ASTM B 117 NAVISTAR Engr. Design Standard A-16 MPAPS B-50 NAVI
8、STAR Supplier Packing and Shipping Std. D-13 CFR Title 29, Part 1910 4.0 GENERAL REQUIREMENTS 4.1 Coating Requirements The zinc plate and chromate passivation treatment will have a thickness of 7.5 m minimum, with a topcoat thickness of 10-12 m. The topcoat is an organic barrier-type coating, which
9、includes an integrated friction modifier to eliminate the need for sealers or post-coating lubricants. NUMBER: MPAPS G-4525 TITLE: Corrosion Protective Coating for Use with Treated Wood REVISION: 1703 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permis
10、sion from Corporate Technical Standards Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MARCH 2017 Page 2 of 4 4.1.1 Appearance Coated parts shall have a uniform tan appearance (unless other color specified on drawing), be thoroughly cured, and free from runs and sags.
11、The coating shall not be oily or tacky to the touch. 4.1.2 Maximum Thickness on Threads The coating will have no adverse effects upon production assembly and disassembly practices. The maximum thickness on threads is limited by the basic thread size and tolerances. After coating, the parts must pass
12、 the appropriate thread GO gages without sticking or binding. 4.2 Part Performance 4.2.1 Adhesion Coated parts shall be tested for 100 hours min in 100% RH at 38C (100F), after 72 hours min aging at room temperature. After testing, parts shall show no evidence of blistering, flaking, peeling, or app
13、earance changes. 4.2.2 Durability/Flexibility For coated fasteners, samples must be able to survive 10 installation cycles in and out of treated wood without substantial coating loss. Coating shall withstand normal handling and storage conditions without flaking, chipping, or loss of adhesion. 4.2.3
14、 Corrosion Resistance Coated parts will be exposed to neutral salt spray testing per ASTM B 117 for 1000 hr. Externally threaded fasteners will first be power driven into treated wood before testing. After testing, samples will show no base metal corrosion. 5.0 QUALIFICATION Pre-production samples,
15、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 Quality Control Plan for this
16、 product will be established by mutual agreement between Navistar 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 control*. 1. Coating Thickness 2
17、. 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 QUALITY CONTROL 6.1 Supplier Requirements All suppliers to NAVISTAR are require
18、d 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 NUMBER: MPAPS G-4525 TITLE: Corrosion Protective Coating for Use with Treated Wood REVISION: 1703 This document is restricted and may not be s
19、ent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MARCH 2017 Page 3 of 4 PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain
20、 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 all respects to those samples which were app
21、roved 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 shall notify Truck Development and Technology
22、Center and NAVISTAR 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, Part 1910 shall be submitt
23、ed 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 statistical control and with a pro
24、cess capable of providing all required properties. The part supplier and the plant metallurgist and/or the quality control manager of the using NAVISTAR plant may determine testing and reporting requirements on specific products. 7.0 SHIPPING, PACKING, AND IDENTIFICATION Shipping and identification
25、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 still be able to meet the specified requirements for six mon
26、ths 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-4525 9.0 APPROVED PRODUCTS Magni 599 (The Magni Group) 10.0 TECHNICAL INFORMATION For fu
27、rther 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 In
28、verness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ NUMBER: MPAPS G-4525 TITLE: Corrosion Protective Coating for Use with Treated Wood REVISION: 1703 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. MARCH 2017 Page 4 of 4 REVISION HISTORY Revision Level Change Approved by Date Approved 1703 Converted to MPAPS R. Goluch 3/16/2017
