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 6 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS- D-7051 Former Designation: TMS-7051 TITLE: Decorative Electroplated Chromium - Plastics CURRENT REV No.: 1506 DATE: JUNE 2015 WRITTEN/EDITED BY: K. Booker APPROVED BY: R. Goluch SUPERSEDES: OCT 2007 REV H PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION Thi
3、s 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 lim
4、its prior to use. Change Notice: revised environmental stress tests, layer thickness requirements and plastics processing information 1.0 APPLICATION This specification covers the decorative electroplated chromium used on interior or exterior plastics. These parts may be exterior grilles, light beze
5、ls, nameplates, interior ornaments, knobs, or similar applications. 2.0 SCOPE This specification covers the material requirements of the base plastic, plating requirements, performance requirements, and quality of the finished part, qualification, source approval and quality control. 2.1 Restricted
6、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 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following
7、 Specifications, Standards, and Regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 CFR Title 29, Part 1910 ASTM B487 ASTM B504 ASTM B727 ASTM B530 NAVISTAR Manufacturing Std. MS-D-13 ASTM B368 ASTM B764 NAVISTAR Engineering Design Std A-16 ASTM B456 NAVIST
8、AR MPAPS B-50 ASTM B604 4.0 REQUIREMENTS The general plastic family from which the unplated plastic part is molded shall be compatible with the particular electroplating process used by the electroplater. The plastic part shall be free from visible molding defects, sink marks, weld or flow lines. Un
9、less otherwise specified on the part drawing, the significant surface finish shall be equal to or better than the No. 2 diamond finish as found in the SPI-SPE Mold Finish Comparison Kit.* Where necessary, the plastic parts shall be stress relieved prior to plating. * Available from D-M-E Corporation
10、, 1975 N. 17th Street, Melrose Park, IL - Licensed by Society of Plastic Industry and Society for Plastic Engineers. NUMBER: MPAPS D-7051 TITLE: Decorative Electroplated Chromium - Plastics REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without pe
11、rmission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 2 of 6 4.1 Plating Requirements This section defines the minimum plate thickness required for bright and low gloss interior and exterior plated plastics. Systems
12、other than those specified which demonstrate satisfactory performance may be approved by the Truck Development and Technology Center. Minimum Plating Thickness(1), mils (m) General Interior Interior Low Gloss General Exterior Class 2 Exterior Copper 0.5 (12.7) 0.7 (17.8) 0.7 (17.8) 1.1 (28) Nickel S
13、emi-Bright(2) - 0.5 (12.7) 0.5 (12.7)(3) 0.5 (12.7) (3) Bright or Low Gloss(2) 0.2 (5.1) 0.3 (7.6) 0.3 (7.6)(3) 0.3 (7.6) (3) Post Nickel Strike(4) - 0.1 (2.5) - - Chromium 0.005 (.127) 0.01 (0.254) 0.01 (0.254) 0.01 (.254) (1) Plating thickness generally and for sub layers may be determined by usin
14、g methods described in ASTM B-487, B-504, B-530, or B-764 as appropriate The plating thickness is the minimum value permitted, determined at specified check points (“C-Points“) on the engineering drawing as designated by a Materials Engineer. (2) Semi-bright nickel is defined as a nickel plate conta
15、ining less than 0.005% sulfur; bright nickel contains 0.04% sulfur minimum. The semi-bright and bright layers can be differentiated with an etchant consisting of one part nitric acid (specific gravity - 1.42) and four parts glacial acetic acid. (3) Satylite finish which creates a low gloss as a resu
16、lt of a mechanical treatment on the semi-bright nickel and a chemical treatment on the bright nickel. (4) The microporous chrome layer shall exhibit a minimum of 10,000 pores/cm2 as determined by the copper deposition (Dubpernell) method as described in ASTM B 456 or a minimum of 2000 pores/cm2 as d
17、etermined by active corrosion sites after testing as described in ASTM B 456. 4.2 Performance Requirements 4.2.1 Thermal Cycling and Corrosion Test: Exterior and Interior Parts 4.2.1.1 Method -CASS testing as per ASTM B 368 test method and procedure. Plated parts shall be subjected to three complete
18、 cycles consisting of the following sequence: 1) 82 3C (180 5F) for 2 hours. 2) 22 3C ( 72 5F) for 1 hour. 3) -34 1C (-30 2F) for 2 hours. 4) 22 3C ( 72 5F) for 1 hour. 4.2.1.1.1 Rinse parts with tap water after each complete thermal cycle and examine for defects. 4.2.1.1.2 Perform CASS corrosion te
19、st for 40 hours (exterior only)* after the three thermal cycles. * Interior plated parts; CASS test for 4 hours at the completion of the three thermal cycles. NUMBER: MPAPS D-7051 TITLE: Decorative Electroplated Chromium - Plastics REVISION: 1506 This document is restricted and may not be sent outsi
20、de 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 3 of 6 4.2.1.2 Required There shall be no evidence of plating and/or plastic failure due to cracks, crazing, blistering,
21、 corrosion, and/or loss of plating adhesion. Corrosion failure shall be considered to have occurred if one or more of the listed conditions develops. 4.2.1.2.1 Corrosion products occurring in more than 2% of the grids* over the entire significant surface area. *Surfaces to be examined shall be divid
22、ed into 6.4 mm (1/4 in) squares with lines having maximum width of 0.13 mm (0.005 in). 4.2.1.2.2 Corrosion products larger than 1.6 mm (1/16 in) in diameter. 4.2.1.2.3 Surface pitting corrosion which contains an area of more than 10 spots 1.2 mm (0.048 in) in diameter or larger in any grid section.
23、4.2.1.2.4 Corrosion products occurring in more than 15% of the grids in any square (10 grids by 10 grids) covering significant surface area. 4.2.2 Thermal Shock Test: General Exterior Parts A separate sample shall be subjected to three complete cycles consisting of the following sequence: 1) 85C (18
24、5F) for 30 minutes. 2) -34C (-30F) ethylene glycol/H2O bath for 30 minutes. 4.2.2.1 Parts shall be transferred immediately from one environment to the other with no time allowed between cycles. There shall be no evidence of plating and/or plastic failure due to cracks, crazing, blistering, corrosion
25、, and loss of plating adhesion. 4.2.2.2 For plating process validation, Navistar will require a -70C part stress test to attempt in induce delamination copper to plastic, or a sub-surface plastic failure. Parts or sections of parts at areas of high radius, of marginal copper thickness, or other poin
26、ts of interest will be soaked for a minimum of 12 hours to look for delamination failures. 4.2.3 Class 2 Exterior Parts 4.2.3.1 Usage For exterior applications, if the class is not specified in the material note on the engineering drawing, General exterior requirements will be assumed applicable. Cl
27、ass 2 exterior requirements should be reserved for large surface area parts or parts with complex geometry or deep draws. 4.2.3.2 Performance Requirements 4.2.3.2.1 Class 2 Exterior Components shall conform to all the requirements of General Exterior Components as well as the additional requirements
28、 in 4.2.3.2.2. 4.2.3.2.2 Thermal Shock Test: Class 2 Exterior Parts Prepare 10 sample parts using the plating requirements of Class 1 Exterior parts. Test each part using the Class 2 Thermal Cycle test procedure and inspect for failures. If plastic to plastic failures are seen, testing shall be repe
29、ated utilizing the Class 2 Exterior plating requirements. Failure reports for test(s) shall be submitted to Navistar Materials and Navistar Engineering for evaluation. NUMBER: MPAPS D-7051 TITLE: Decorative Electroplated Chromium - Plastics REVISION: 1506 This document is restricted and may not be s
30、ent 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 6 Cycle 1 1) Place part into chamber at -40C for 2 hours 2) Place part into chamber at 82C for 1 hour 3) P
31、lace part into chamber at -40C for 2 hours 4) Place part into chamber at 82C for 1 hour 5) Inspect part for failures, mark failure points with temperature Cycle 2 1) Place part into chamber at -50C for 2 hours 2) Place part into chamber at 82C for 1 hour 3) Place part into chamber at -50C for 2 hour
32、s 4) Place part into chamber at 82C for 1 hour 5) Inspect part for failures, mark failure points with temperature Required: There shall be no evidence of plastic to plastic delamination on any test samples Production Certification Upon determination by Navistar Materials, Navistar Engineering and su
33、pplier that parts require class 2 exterior plating thicknesses, all production parts will be expected to pass the class 2 thermal cycle test with no evidence of plastic to plastic delamination. 4.2.4 Adhesion After completion of the satisfactory number of prescribed thermal cycles and corrosion test
34、, as well as the thermal shock test, parts passing these tests shall be scribed with an “X“ through the plating to the plastic surface. A strip of adhesive tape (#710 Scotch Tape - 3M Company) 1.9 cm (3/4 in) wide, shall be applied to the scribed “X“. The tape shall be pulled at 90 to the surface an
35、d the part examined for lifting of the electroplate. Evidence of loss of adhesion shall be cause for rejection. 5.0 QUALITY The plated part shall have a bright or satin finish as specified and a uniform reflective finish. Each plated deposit shall be adherent and free from cracks and foreign materia
36、l (except for the post nickel strike and the resulting microporous chromium). The surface shall be dense, smooth, uniform, and free from stains, pinholes, nodules, or any other defects which affect the overall appearance of the plating or its ability to meet the requirements of this specification. 6
37、.0 QUALIFICATION When requested, the vendor shall furnish parts made from a TDTC test mold to TDTC Materials Laboratory. These samples shall be accompanied by a detailed test report indicating conformance to all requirements of this specification. The number of parts and types of materials shall be
38、specified on the test part drawing. The mold for these parts shall be furnished to the vendor upon formal request and shall remain the responsibility of the vendor while in their possession. 6.1 Quality Control Plan A Quality Control Plan for products supplied to the requirements of this specificati
39、on will be established by mutual agreement between NAVISTAR and the supplier. Unless specific exception is NUMBER: MPAPS D-7051 TITLE: Decorative Electroplated Chromium - Plastics REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission f
40、rom Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 5 of 6 noted, the following characteristics, where applicable*, shall be included in the plan as features for management by statistical process control.* * Other characteri
41、stics 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 Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality Sys
42、tem 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 maintain their certification with an accredited registrar and must furnish copies of reg
43、istration 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 were approved by the purchaser. No changes in formulation or processing practices are pe
44、rmitted 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 Engineering and Purchasing and Supplier Development of the proposed change(s). Test data indic
45、ating 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 request for change. 7.3 Process Control The supplier shall either perform and report r
46、esults 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 capable of providing all required properties. The part supplier and the quality control manag
47、er 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 Standard MS-D-13. Parts shall be packaged so as to avoid any damage in shipment detrimental t
48、o the appearance of the part. 9.0 DESIGNATION ON DRAWINGS Example: Chrome Plate, General Exterior, MPAPS-7051 Thickness NUMBER: MPAPS D-7051 TITLE: Decorative Electroplated Chromium - Plastics REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without
49、 permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 6 of 6 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.
