1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 00 2014 11 21 Released C. Mracna, NA Controlled document at www.MATS Copyright 2014 Ford Global Technologies, LLC Page 1 of 8 PAINT PERFORMANCE, ALUMINUM WHEELS, ROAD AND UNDERBODY SPARE WSS-M2P122-D1 PAINT PERFORMANCE, ALUMINUM WHEELS,
2、INTERIOR STOWED SPARE WSS-M2P122-D2 PAINT PERFORMANCE, STEEL WHEELS, ROAD AND UNDERBODY SPARE WSS-M2P122-D3 PAINT PERFORMANCE, STEEL WHEELS, INTERIOR STOWED SPARE WSS-M2P122-D4 1. SCOPE These specifications define the performance requirements for color/clear coatings over wheels. 2. APPLICATION Thes
3、e specifications were released originally for full or partially painted wheels. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). All requirements of t
4、his specification must be met with production intent wheels, unless otherwise noted. 3.2 COATING The supplied coating shall be a continuous film, free of blisters, bubbles, foreign material and similar imperfections. 3.2.1 Aging Prior to testing, test specimens prepared for investigations according
5、to this specification must be aged at least 72 hours at 23 +/- 2 C (preferred) or 16 hours at 45 +/- 1 C. 3.2.2 Cure Profile A temperature part profile curve (Time/Temp) from the production process for the part must be included in the PPAP. 3.3 FILM PROPERTIES 3.3.1 Film Thickness (FLTM BI 117-01) C
6、oating thickness must be sufficient to meet all the requirements of these specifications. Each coating manufacturers thickness requirements are to be specified on the applicators Control Plan. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-D1/D2/D3/D4 Copyright 2014, Ford Global Technologies, LLC Pag
7、e 2 of 8 To protect against filiform corrosion, the recommended minimum thickness for bright machined or fully polished, clear coated wheels is 0.070 mm. Primer and Color usage will be defined on the Engineering Drawing. 3.3.2 Initial Hardness (ASTM D1474) Hardness values at the target film and bake
8、 conditions shall meet the recommendations of the paint supplier and be recorded and available upon request. Paint shall be sufficiently cured at time of packing to withstand normal handling without damage. Properly cured paint finish shall be hard enough to dry sand easily with 360 grit paper witho
9、ut gumminess or severe scratching. Hardness shall be verified prior to any additional testing outlined below. 3.3.3 Color (FLTM BI 109-01 Visual Assessment, SAE J1545, Three-Angle CMC) Shall match the Master Approved Sample color panel or the initial sample as approved by Design Center. 3.3.4 Gloss
10、Report (FLTM BI 110-01, ASTM D 523) Shall match the Master Approved Sample color panel or the initial sample as approved by Design Center. Gloss A: 20 Glossmeter min 92 B: 60 Glossmeter 76 - 84 C: 60 Glossmeter 66 - 74 D: 60 Glossmeter 58 - 66 E: 60 Glossmeter 47 - 53 F: 60 Glossmeter 33 - 38 G: 60
11、Glossmeter 17 - 23 H: 60 Glossmeter 7 - 13 J: 60 Glossmeter 4 - 6 K: 60 Glossmeter 2 - 4 L: 60 Glossmeter 0.5 - 2.0 N: 60 Glossmeter 1.8 - 2.4 R: 60 Glossmeter 1.2 1.6 3.3.5 Gas Soak (Immerse samples for 1 hr at 23 +/- 2 C in commercially available grade of 87 octane, lead free gasoline.) After 5 mi
12、nute recovery time, no color change in excess of Gray Scale rating 4 5 (AATCC Evaluation Procedure 1/ISO 105-A02), no gloss change (FLTM BI 110-01, 25% max), and no surface distortion or permanent softening permitted. Adhesion shall meet the requirements of para 3.4. 3.4 PAINT ADHESION Grade 2 max (
13、FLTM BI 106-01, Method B, carbide tip scribe only) Lightly hand sand paint film surface (10 double rubs, moderate pressure) with P600 paper until dull, before scribe operation and checking adhesion. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-D1/D2/D3/D4 Copyright 2014, Ford Global Technologies, L
14、LC Page 3 of 8 3.5 HIGH PERFORMANCE ADHESION 3.5.1 Thermal Shock 2 mm2 max at scribe (FLTM BI 107-05) intersection or 1.5 mm from the scribe line Alternate Method 3.5.2 Resistance Against High Pressure Cleaner 2 mm2 max (FLTM BO 160-04, Method B) Prior to testing the painted surface shall be X-scrib
15、ed through to the substrate (30 angle). 3.6 HEAT RESISTANCE Rating 4-5 min (7 days at 80 +/-2 C, AATCC Evaluation 8.0 N Nano Scratch Test (DVM-0058-PA) Deformation 0.40 m 3.4.8.2 C - J Gloss Materials (FLTM BO 162-01) Requirement at 2N load Scratch: Rating 2 max No color Change at any angle) ENGINEE
16、RING MATERIAL SPECIFICATION WSS-M2P122-D1/D2/D3/D4 Copyright 2014, Ford Global Technologies, LLC Page 4 of 8 Marring: Rating 2 max Requirement at 7N load Whitening Rating 1 max 3.10 CHIP RESISTANCE 3.10.1 Stone Chip Resistance 4B max (SAE J400, 0.5 L (1.05 pts.) of gravel, -20 & 23 C) Alternate Meth
17、od 3.10.2 Grit Blast, Split Shot Rating 7 min (FLTM BI 157-06) Test shall be conducted on flat test pieces cut from production wheels 3.11 WATER RESISTANCE, 240 h (FLTM BI 104-01) No blistering, no gloss change (FLTM BI 110-01, 25% max), no loss of adhesion, and/or any other coating failure. Adhesio
18、n shall be tested within 30 minutes after removal from water according to paragraph 3.4. 3.12 CONDENSING HUMIDITY RESISTANCE Rating 4-5 min (FLTM BI 104-02, Method A, 240h, AATCC Evaluation Procedure 1/ISO 105-A02) Alternative Methods (Must be agreed upon by Product and Materials Engineering) 3.12.1
19、 Humidity Resistance 168hr at 85C & 90%R.H. Rating 4-5 min 3.12.2 Humidity Resistance 240hr at 85C & 90%R.H. Report After exposure, adhesion shall be tested and met Para 3.4 within 60 minutes after exposure. No blistering, dulling, softening, and/or any other film failure. 3.13 ACCELERATED WEATHERIN
20、G RESISTANCE 3.13.1 Accelerated Weatherometer Exposure ASTM D7869 (preferred) SAE J2527 Boro/Boro New Application of Existing Paint Technology 2250 hours 3000 hours New Paint Technology 3750 hours 6000 hours 3.13.1.1 Color Change Rating 4 min (AATCC Evaluation Procedure 1/ ISO 105-A02, prior to 3.5.
21、1.3) Wiping with wet clean cloth allowed. No polishing allowed ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-D1/D2/D3/D4 Copyright 2014, Ford Global Technologies, LLC Page 5 of 8 3.13.1.2 Gloss Change 25% max (FLTM BI 110-01, prior to 3.5.1.3) 3.13.1.3 Adhesion, X-Scribe 10% loss (Evaluation procedu
22、re per FLTM BI 104-01, Figure 8) No Peeling, delamination, blistering, cracking, or crazing. 3.13.1.4 Adhesion after Water Immersion 10% loss (FLTM BI 104-01, 24hr immersion, Figure 8) No Peeling, delamination, blistering, cracking, or crazing. 3.13.2 Outdoor Weathering 1 & 2 year submission (SAE J
23、1976, Procedure A) required for new technology only 3.13.2.1 Color Change Rating 4 min (AATCC Evaluation Procedure 1/ ISO 105-A02, prior to 3.5.2.3) 3.13.2.2 Gloss Change 25% max (FLTM BI 110-01, prior to 3.5.2.3) 3.13.2.3 Adhesion, X-Scribe 10% loss (Evaluation procedure per FLTM BI 104-01, Figure
24、8) No Peeling, delamination, blistering, cracking, or crazing. 3.13.2.4 Adhesion after Water Immersion 10% loss (FLTM BI 104-01, 24hr immersion, Figure 8) No Peeling, delamination, blistering, cracking, or crazing. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-D1/D2/D3/D4 Copyright 2014, Ford Global
25、 Technologies, LLC Page 6 of 8 3.14 FILIFORM RESISTANCE, Bright Machined and Polished, Clear Coated Surfaces Only, 672 h (SAE J2635) Wheel samples shall consist of a pie-wedge piece containing two spokes, two lug towers, pilot bore, valve hole, and two scribe lines (see below). No more than 4.0 mm c
26、orrosion or loss of adhesion from the scribe line. No filament growth allowed from design edges. Design edges include, but are not limited to, deflash edges, pilot bore, valve hole, and lug towers. Scribing is not required if machined surface along spoke (perpendicular to machining direction) is les
27、s than 10 mm. 3.15 CYCLIC CORROSION RESISTANCE (Laboratory Accelerated Cyclic Corrosion Test 00.00-L-467) 3.15.1 Aluminum Wheels WSS-M2P122-D1 9 weeks WSS-M2P122-D2 4 weeks At test termination, wheel must have an acceptable as-installed appearance based on a jury evaluation of at least two people, o
28、ne person from Ford Wheels Engineering, and the other from either Ford Wheels or Materials Engineering. Additionally, the wheel appearance must meet the minimum appearance requirements as defined in the corrosion evaluation photo guides located in the Global Engineering Standard, RQT-001101-002492,
29、Reference 1. 3.15.2 Steel Wheels Rust Grade 6 per ASTM D610 WSS-M2P122-D3 9 weeks WSS-M2P122-D4 4 weeks 3.16 RE-WORK Alloy wheels can be processed through coating operations a maximum of 2 times (initial and one re-work). Subsequent rework after 2 coatings requires that the wheels be stripped prior
30、to reprocessing. Re-worked wheels must match the master samples originally approved by the ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-D1/D2/D3/D4 Copyright 2014, Ford Global Technologies, LLC Page 7 of 8 Design Center, and meet all of the performance requirements of this specification, and requir
31、ements of the cast aluminum material specification, ESA-M1A123-A. 4. GENERAL INFORMATION This information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 STRIPPING W
32、heel stripping processes must not degrade the mechanical properties of the wheel. Recommended processes for alloy wheels are listed below: Atotech USA Inc. - Recover 5000 Process 1750 Overview Dr., Rock Hill, SC 29730 803-326-3439 or Henkel Corporation P3 Stripper 3000 32100 Stephenson Highway, Mad
33、ison Heights, MI 48071 (248) 583-9300 or 4.2 RECOMMENDED TESTING REQUIREMENTS FOR DESIGN VALIDATION, PRODUCTION VALIDATION, AND SREA. Paint performance is a function of material selection, surface preparation, and paint application. For established coatings and coating lines, this may permit a redu
34、ced test schedule to validate compliance to this specification. Use the following table to determine the recommended test plan depending on the situation. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-D1/D2/D3/D4 Copyright 2014, Ford Global Technologies, LLC Page 8 of 8 Table 1 New Coating Material
35、Established Coating All Applicators New Paint Line (No Ford History) Existing Paint Line (Applicator) Test Requirements Example A Existing part Example B New Part for a different application Example C Switching Known Paints on same part Example D New Part/Same materials Example E Process Change Exam
36、ple F Film Thickness X X X X X Contact Materials Engineering Initial Hardness X X X X X Color X X X X X Gloss X X X X X Gas Soak X X X X X Paint Adhesion X X X X X High Performance Adhesion X X X X X Heat Resistance X X X X X Fluid Spotting Resistance X Mar Resistance X X X X Scratch Resistance X X
37、X X Chip Resistance X X Water Resistance X Condensing Humidity Resistance X Accelerated Weathering Resistance X X1 X1 Filiform Resistance X X Cyclic Corrosion Resistance X X Example A. A new coating is developed by a paint manufacturer for automotive applications Example B. Painter goes out of busin
38、ess. New painter uses the same paint, but has never painted parts for Ford. Example C. Tier 2 painter for control arms is asked to coat steel wheels on the same paint line. Example D. Steel wheel supplier is switching from standard e-coat to high edge e-coat on their in-house paint line. Both e-coat
39、s are widely used at Ford. Example E. Aluminum wheel supplier is painting the first run of PPAP parts for the new model program on the paint line that supports current model. Example F. The level of testing is highly dependent on what is changing. Contact Materials Engineering. 1 Potential use of surrogate data Note: This specification cannot prove out parts or coatings that involve changes in vehicle environment such as increased stone chipping or increased temperature. These changes may require vehicle testing, consult SDS/ARL requirements.
