NAVISTAR MPAPS G-4513-2016 Strippable Protective Coatings.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. 2016 by Navistar, Inc. APRIL 2016 Page 1 of 5 NAVISTAR, INC. Material, Parts, and Process Specifications

2、 (MPAPS) NUMBER: MPAPS- G-4513 Former Designation: TMS-4513 TITLE: Strippable Protective Coatings CURRENT REV No.: 1604 DATE: April 2016 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: Rev. 0902 February 2009 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This sp

3、ecification 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 limits

4、prior to use. Change Notice: Converted to MPAPS; Editorial changes 1.0 APPLICATION This specification covers two types of strippable protective coatings which provide temporary protection to painted or unpainted (polished or unpolished) metal surfaces against deterioration, corrosion, abrasion or da

5、mage during fabrication, transportation, handling, or storage. Type I is a spray-on coating, while Type II is a film laminated to the metal coil or sheet by manual or automated methods 2.0 SCOPE This specification covers general requirements for both Types I and II coatings, requirements for uncured

6、 sprayable coating solution, performance requirements for the cured sprayable coating, and requirements for the film laminate coating for coils. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requireme

7、nts of the MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following Specifications, Standards, and Regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 NAVISTAR MPAP

8、S B-50 CFR Title 29, Part 1910 MIL-C-16555 NAVISTAR Manufacturing Std. MS-D-13 ASTM B 117 NAVISTAR Engineering Design Std A-16 4.0 REQUIREMENTS The materials covered by this specification shall be capable of temporarily protecting bare or painted metal and shall be easily removable without damage, r

9、esidue, or discoloration of the object coated. Unless otherwise specified, all sample preparation and testing related to Type I coating shall be in accordance with the methods described in MIL-C-16555. NUMBER: MPAPS G-4513 TITLE: Strippable Protective Coatings REVISION: 1604 This document is restric

10、ted 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. APRIL 2016 Page 2 of 5 4.1 Type I Spray-on coating 4.1.1 Uncured Properties 4.1.1.1 Composition Shall be 3

11、0% (by weight) min non-volatile material. 4.1.1.2 Viscosity Shall be 70-100 Krebs units, when tested at 10 1C (50 2F). 4.1.1.3 Gelation At Low Temperature When stored at -29C (-20F), solution shall be restorable to a free-flowing consistency for spraying by manual or mechanical stirring at 25 1C (77

12、 2F). 4.1.1.4 Separation Of Pigment After storing in a closed container for 10 days at room temperature, the pigment shall not separate from the solution in such a manner as to prevent restoration of the coating solution to consistency for satisfactory spraying by manual stirring at 25 1C (77 2F). 4

13、.1.1.5 Sprayability The solution shall be supplied in a consistency satisfactory for application with conventional pressure-type spray equipment. 4.1.2 Cured Coating Properties The minimum coating thickness shall be 0.35 mm (14 mils) and the coatings shall be capable of meeting the following perform

14、ance tests at this min thickness. In actual use, thinner coatings may be used provided that all the cured coating requirements are satisfied. 4.1.2.1 Tensile Strength Shall be 3.4 MPa (500 psi) min. 4.1.2.2 Elongation Shall be 200% min. 4.1.2.3 Low Temperature Flexibility After conditioning at -23 1

15、C (-10 2F), the test specimens shall be capable of bending around a 25 mm (1 in) diameter mandrel without cracking or breaking. 4.1.2.4 Heat Resistance Coating shall show no evidence of shrinkage, separation from the panel, bubbles, darkening or other visible evidence of degradation. After cooling t

16、o room temperature, the coating shall not crack or break on being peeled back from the panel. 4.1.2.5 Water Vapor Transmission Water vapor transmission rate after exposure to accelerated weathering described below shall be not more than 1.2 grams per 6.45 x 10- m (100 in) per 24 hours. 4.1.2.6 Accel

17、erated Weathering After exposure to 100 hours standard Weatherometer testing or 100 hours QUV testing, coating shall show no visible evidence of degradation or shrinkage and shall be strippable from the test panel in one continuous sheet. 4.1.2.7 Salt Spray Resistance The test specimen shall show no

18、 evidence of corrosion, and the coating shall show no pinholes or separation from the metal, after testing for 96 hours per ASTM B 117. 4.1.2.8 Adhesion Shall be not less than 87.5 N (0.50 lbf) and not more than 390 N (2.25 lbf) per m (in) width. NUMBER: MPAPS G-4513 TITLE: Strippable Protective Coa

19、tings REVISION: 1604 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. APRIL 2016 Page 3 of 5 4.1.2.9 Flammability Test specimens of

20、 the dried coating shall cease to burn or glow within five seconds after the source of ignition is removed. 4.2 Type II Laminated Film 4.2.1 Film Properties The sheet/tape product will be a polyethylene or vinyl type with low- to moderate-tack adhesive, compatible with a polished stainless steel or

21、aluminum substrate (or as otherwise specified), and easily peelable without leaving residual adhesive, discoloration, or residue. Preferred color of film to be white. 4.2.1.1 Thickness Thickness of the film will be in the range 2-5 mils (0.05-0.13 mm). 4.2.1.2 Tensile Strength Shall be 3.1 MPa (4500

22、 psi) min. 4.2.1.3 Elongation Shall be 450% min. 4.2.1.4 Adhesion Shall be not less than 87.5 N (0.50 lbf) and not more than 390 N (2.25 lbf) per m (in) width. 4.2.2 Performance Properties 4.2.2.1 Formability Film shall show no evidence of shrinkage, separation from the panel, bubbles, darkening, or

23、 other visible evidence of degradation during normal metal forming conditions. 4.2.2.2 Application and Storage Temperatures Film should be applied to and removed from metal at a temperature of 60F minimum, and stored at 60-80F (assuming 40-60% relative humidity) before and after application. 4.2.2.3

24、 Appearance and Removal Sheet/film will adequately conform to the metal substrate when applied, and shall not crack, bubble, wrinkle, tear, sliver, discolor, etc., until final removal from metal substrate. Film will peel off in long clean sheets. 5.0 QUALITY All product supplied shall be clean and f

25、ree from dirt, oils, sharp edges, or defects harmful to product performance. 6.0 QUALIFICATION Engineering qualification of sources is required in advance of production shipments. Samples shall be accompanied by test data certifying that all requirements of the specification have been met. NUMBER: M

26、PAPS G-4513 TITLE: Strippable Protective Coatings REVISION: 1604 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. APRIL 2016 Page 4

27、 of 5 6.1 Quality Control Plan A Quality Control Plan for products supplied to the requirements of this specification will be established by mutual agreement between NAVISTAR and the supplier. Unless specific exception is noted, the following characteristics, where applicable*, shall be included in

28、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 purchase order. * See NAVISTAR Engineering Design Standard A-16 7.0 SOURCE APPROVAL AND QUALITY CONTROL 7.1 Supplier Requi

29、rements 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 approval requirements. Suppliers must m

30、aintain their certification with an accredited registrar and must furnish copies of registration certificates to their Corporate Buyer upon request. 7.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be equivalent in all respects to those samples which w

31、ere 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 shall notify NAVISTAR Materials Enginee

32、ring 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, Part 1910 shall be submitted with the

33、 request for change. 7.3 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 process capab

34、le 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. 8.0 SHIPPING AND HANDLING Shipping and identification shall be in accordance with NAVISTAR Manufacturing Stand

35、ard MS-D-13. Parts shall be packaged so as to avoid any damage in shipment detrimental to the appearance of the part. NUMBER: MPAPS G-4513 TITLE: Strippable Protective Coatings REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from

36、 Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 5 of 5 9.0 DESIGNATION ON DRAWINGS Example of note to use on drawings: “Protective Coating on Bright Finish Side per MPAPS-4513, Type I.” “Protective Film on Bright Finish Si

37、de per MPAPS-4513, Type II.” If type is not specified, then either Type I or Type II will be allowed. 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 Global Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/