1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 01 2017 03 13 Revised See Summary of Revisions C. Taylor, NA / Global Team 2016 08 23 Released C. Taylor, NA / Global Team Controlled document at www.MATS Copyright 2017 Ford Global Technologies, LLC Page 1 of 9 PAINT PERFORMANCE: ALUMIN
2、UM WHEELS, ROAD AND SPARE WSS-M2P122-E1 PAINT PERFORMANCE: ALUMINUM WHEELS, INTERIOR STOWED MINI SPARE WSS-M2P122-E2 PAINT PERFORMANCE: STEEL WHEELS, ROAD AND SPARE WSS-M2P122-E3 PAINT PERFORMANCE: STEEL WHEELS, INTERIOR STOWED MINI SPARE WSS-M2P122-E4 1. SCOPE These specifications define the perfor
3、mance requirements for color/clear coatings over wheels. 2. APPLICATION These specifications were released originally for full or partially painted wheels. 3. REQUIREMENTS All requirements of this specification must be met with production intent wheels, unless otherwise noted. 3.1 APPROVED SOURCES T
4、his specification is performance based and does not have approved sources. 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 to this sp
5、ecification 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 is required. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-E1/E2/E3/E4 Copyright 2017, Ford Global
6、Technologies, LLC Page 2 of 9 3.3 FILM PROPERTIES 3.3.1 Film Thickness (FLTM BI 117-01, ASTM B487) The applied coating thicknesses must be sufficient to meet all the requirements of this specification, the Wheel DVP testing (Design Verification Plan), and the appearance requirements developed at AAR
7、 (Appearance Approval Report). The table below provides typical F point film thickness ranges in micrometers. These film thicknesses are not requirements. Standard Paint (Full Hiding Basecoat) Premium Paint (Partial Hiding Basecoat) Machined or Polished with Clearcoat E-Coat with Monocoat E-Coat - -
8、 - 17-24 Primer (Powder) 50-150 50-150 - - Basecoat Liquid Liquid - - 15-30 3-8 - - Clearcoat Powder Liquid Powder Liquid Powder Liquid - 50-150 38-50 50-150 38-50 70-150 38-50 - Monocoat (Liquid) - - - 38-50 C points (corner points) must meet the acceptance criteria defined in the Global Wheel FS (
9、Functional Specification). Minimum film thicknesses determined through DVP (Design Verification Plan) testing should be listed on the drawing and the suppliers control plan. To promote robust paint adhesion, a zinc phosphate pretreatment per WSS-M3P36-A1 is recommended prior to electrocoating steel
10、wheels, while a suitable pretreatment passivation shall be used prior to painting aluminum wheels. 3.3.2 Initial Hardness (ASTM D1474) Hardness values at the target film and bake conditions shall meet the recommendations of the paint supplier and be recorded and available upon request. Paint shall b
11、e 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 without gumminess or severe scratching. Hardness shall be verified prior to any additional testing outlined below. 3.3.3 Color
12、(Except -E2 & -E4) (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. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-E1/E2/E3/E4 Copyright 2017, Ford Global Technologies, LLC Page 3 of 9
13、 3.3.4 Gloss Report (Except -E2 & -E4) (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
14、 F: 60 Glossmeter 33 - 38 G: 60 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 (Except -E2 & -E4) (Immerse samples for 1 h at 23 +/- 2 C in commercially available g
15、rade of lead free gasoline.) After 5 minute 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 for A & B gloss surfaces), and no surface distortion or permanent softening permitted. Adhesion shall mee
16、t the requirements of paragraph 3.4. 3.3.6 Ultraviolet Light Transmission (Except -E2 & -E4) For each color, measure the light transmission of the basecoat and clearcoat layering system at the minimum recommended film builds using an integrating sphere spectrophotometer. Report transmission at 360 n
17、m and 400 nm. Submit transmission curve over entire range measured. 3.4 PAINT ADHESION Grade 2 max (FLTM BI 106-01, Method B, carbide tip scribe only, If wheel geometry does not allow Method B, contact Materials Engineering) Lightly hand sand paint film surface (10 double rubs, moderate pressure) wi
18、th P600 paper until dull, before scribe operation and checking adhesion. 3.5 HIGH PERFORMANCE ADHESION (Except -E2 & -E4) 3.5.1 Thermal Shock Rating 20 (FLTM BI 107-05) Alternate Method 3.5.2 Resistance Against High Pressure Cleaner 2 mm2 max (FLTM BO 160-04, Method B) Prior to testing the painted s
19、urface shall be X-scribed through to the substrate (30 angle). ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-E1/E2/E3/E4 Copyright 2017, Ford Global Technologies, LLC Page 4 of 9 3.6 HEAT RESISTANCE Rating 4-5 min (7 days at 80 +/-2 C, AATCC Evaluation A & B Gloss Surfaces: Procedure 1/ISO 105-A02)
20、3mm dia.) Alternate Method 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 (FLTM BI 104-01, 240 h) No blistering, dulling, softening, adhesion loss, and/or any other film failure. After exposure
21、, adhesion shall be tested within 30 minutes after removal from water according to paragraph 3.4. 3.12 HUMIDITY RESISTANCE Rating 4-5 min (AATCC Evaluation Procedure 1/ISO 105-A02) 168 h at 85 C & 90% R.H. After exposure, adhesion shall be tested and met per paragraph 3.4 within 60 minutes after exp
22、osure. No blistering, dulling, softening, and/or any other film failure. 3.13 RESISTANCE TO EXTERIOR WEATHERING (Except -E2 & -E4) Spare wheels are exempt from accelerated weathering. 3.13.1 Weathering Requirements Accelerated Weathering Outdoor Weathering ASTM D7869 (Preferred) SAE J2527 Boro/Boro
23、SAE J1976 New Application of Existing Paint Technology 2250 hours 3000 hours Not required New Paint Technology (contact Materials & Core Engineering to make determination) 3750 hours 6000 hours 1, 3, 5 yr ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-E1/E2/E3/E4 Copyright 2017, Ford Global Technolog
24、ies, LLC Page 6 of 9 3.13.1.1 Appearance There shall be no blistering, cracking, peeling or micro checking after any of the exposure levels listed in paragraph 3.13.1. After 1 year Florida exposure there shall be no visual color change and 10% maximum gloss loss. After 3 years Florida exposure or 30
25、00 h accelerated weathering per SAE J2527 Boro/Boro or 2250 h accelerated weathering per ASTM D7869: AATCC Evaluation procedure 1: Rating 4 max Gloss Change per ASTM D 523 25% loss max A & B gloss surfaces only Color Change per FLTM BI 109-01 E 2.0 max Adhesion, X-scribe per FLTM BI 104-01 10% loss
26、After 5 years Florida exposure or 6000 h accelerated weathering per SAEJ2527 Boro/Boro or 3750 h accelerated weathering per ASTM D7869: Adhesion, X-scribe per FLTM BI 104-01 10% loss No blistering, cracking, peeling, microchecking, or other film failure 3.13.1.2 Adhesion After Water Immersion 90% ad
27、hesion (FLTM BI 104-01, 24 h immersion) retention No peeling, delamination, blistering, cracking, or crazing. 3.14 FILIFORM RESISTANCE, (Except -E2 & -E4) Applies to Bright Machined and Polished, Clear Coated Surfaces Only (SAE J2635, 672h) Wheel samples shall consist of a pie-wedge piece containing
28、 two spokes, two lug towers, pilot bore, valve hole, and two scribe lines (see below). No more than 4.0 mm corrosion 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 to
29、wers. Scribing is not required if machined surface along spoke (perpendicular to machining direction) is less than 10 mm. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-E1/E2/E3/E4 Copyright 2017, Ford Global Technologies, LLC Page 7 of 9 3.15 CYCLIC CORROSION RESISTANCE, (Except -E2 & -E4) (Laborato
30、ry Accelerated Cyclic Corrosion Test 00.00-L-467) 3.15.1 Aluminum Wheels WSS-M2P122-E1 9 weeks WSS-M2P122-E2 4 weeks At test termination, wheel must have an acceptable as-installed appearance based on a jury evaluation of at least two people, one person from Ford Wheels Engineering, and the other fr
31、om 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, Reference 1. 3.15.2 Steel Wheels 1% Rust (ASTM D610) (Ru
32、st Grade 6) WSS-M2P122-E3 9 weeks WSS-M2P122-E4 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 to reprocessing. Re-worked wheels must match the
33、 master samples originally approved by the Design Center, and meet all of the performance requirements of this specification, and requirements of the cast aluminum material specification, WSS-M2A123-B1/B2. 4. GENERAL INFORMATION This information given below is provided for clarification and assistan
34、ce in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 STRIPPING Wheel stripping processes must not degrade the mechanical properties of the wheel. Recommended processes for alloy wheels are listed below: Atotech USA Inc. - Re
35、cover 5000 Process 1750 Overview Dr., Rock Hill, SC 29730 803-326-3439 or Henkel Corporation P3 Stripper 3000 32100 Stephenson Highway, Madison Heights, MI 48071 (248) 583-9300 or 4.2 RECOMMENDED TESTING FOR DESIGN AND PRODUCTION VALIDATION, SREA, AND MCDCC. Paint performance is a function of mate
36、rial selection, surface preparation, and paint application. For established coatings and coating lines, this may permit a reduced test schedule to validate compliance to this specification. Use table 1 to determine the recommended test plan depending on the situation. ENGINEERING MATERIAL SPECIFICAT
37、ION WSS-M2P122-E1/E2/E3/E4 Copyright 2017, Ford Global Technologies, LLC Page 8 of 9 4.3 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall sub
38、mit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must be available for review upon request and kept for a min
39、imum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.4 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material
40、upon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Ma
41、terials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specifications, all samples tested to the specifications for Design Verification (DV), Product
42、ion Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.5 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in
43、 the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. 5. SUMMARY OF REVISIONS 2017 03 13 Changed Fluid Spotting Resistance with brake fluid (3.7.
44、2) to report only and reformatted paragraph ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-E1/E2/E3/E4 Copyright 2017, Ford Global Technologies, LLC Page 9 of 9 Table 1 Testing Requirements MCDCC Sign-Off SREA Process Change DVP Testing New Paint Technology* Existing Paint Technology* 3.3.1 Film Thic
45、kness Panel or Part Panel or Part Contact Core Wheels & Materials Engineering Part 3.3.2 Initial Hardness Panel or Part Part 3.3.3 Color Panel or Part Panel or Part Panel or Part 3.3.4 Gloss Panel or Part Panel or Part Panel or Part 3.3.5 Gas Soak Panel or Part Part 3.3.6 UV Transmission 3.4 Paint A
46、dhesion Panel or Part Panel or Part Part 3.5 High Performance Adhesion Panel or Part Panel or Part Part 3.6 Heat Resistance Panel or Part Part 3.7 Fluid Spotting Resistance Panel or Part Part 3.8 Mar Resistance Panel Panel 3.9 Scratch Resistance Panel Panel 3.10 Chip Resistance Panel or Part Panel o
47、r Part Part 3.11 Water Resistance Panel or Part Panel or Part Part 3.12 Humidity Resistance Panel or Part Part 3.13 Resistance to Exterior Weathering Panel or Part (2250 & 3750 h) Panel1 or Part Part 3.14 Filiform Resistance Panel or Part Part 3.15 Cyclic Corrosion Resistance Panel or Part Part 3.16
48、 Re-Work Part *Contact Materials & Core Engineering to determine whether paint technology is considered “new” or “existing” 1 Potential use of surrogate data Test panels should be made of design intent substrates, painted on line in the intended production process, and film thicknesses should be representative of future production. 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.
