1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 0 2010 03 25 Activated Replaces WSS-M98P12-A B. Haggart, NA Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 STEERING WHEEL MATERIAL PERFORMANCE WSS-M98P12-B SPECIFICATION 1. SCOPE This specificati
2、on defines the material performance requirements for the steering wheel “Class A“ material. It does not address leather wrap, switches, or internal materials; they are beyond the scope of this specification and are addressed separately. Testing must be conducted on parts at DV and PV unless specifie
3、d otherwise by Ford Engineering. See Table 1 for sample sizes and required testing. 2. APPLICATION This specification was originally released for materials used in the construction of steering wheels, which are in-mold painted (urethane) and wood wheels. 2.1 LIMITATIONS Excluded from this specificat
4、ion are top grain (WSS-M1F21-C) and split (WSS-M1F22-C) leather wrap; drivers side airbag, bezel, shroud, and switches for MIC (WSS-M15P4-F) and for painted (WSS-M2P188-A1); and bezel/emblem appliqu (WSS-M15P34-C1). 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material supplier
5、s and part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.2 FILM PROPERTIES 3.2.1 Paint Film Thickness Requirements 20 - 45 (Painted wheels only) micrometer Test Method must be pre-approved by Ford Materials Engineering. Cross section evalua
6、tion under microscope is appropriate. 3.3 APPEARANCE Color, gloss, grain, tactile effect and surface finish shall match master Trim Sample and/or Master appearance sample as approved by Corporate Design. The coating shall exhibit no craters, pinholes, solvent popping, seediness, abnormal roughness,
7、excessive flow or any other detrimental defect. 3.3.1 Color (FLTM BI 109-01, Visual Assessment and/or SAE J1545, MA58 Three-Angle CMC) The color, pattern, and finish shall match the approved Design Center master sample, or shall be as specified on the Engineering Document. ENGINEERING MATERIAL SPECI
8、FICATIONWSS-M98P12-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 7 3.3.2 Gloss (FLTM BI 110-01, ASTM D 523) As released by Engineering: 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:
9、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 3.4 RESISTANCE PROPERTIES 3.4.1 Adhesion Less than 5% coating (FLTM BI 106-01, Method D) removal, with no complete diamond removal Adhesion sha
10、ll be performed on the full wheel in the largest grained “flat“ area. Typically, this will be on the “back“ face of the wheel in the spoke area. Due to the contour of the part, substrate material may be removed when performing this test. This is not cause for rejection; adhesion of the paint to the
11、substrate material must be evaluated. 3.4.2 Water Resistance 96 h (FLTM BI 104-01) No blistering, softening, dulling or loss of adhesion when tested per para 3.4.1 within 30 minutes of removal from water on all paint systems. 3.4.3 Flexibility (N/A for Wood Wheels) Required for substrates with a fle
12、xural modulus less than 450 MPa. Specimen shall be taken from the steering wheel rim as follows: cut along the parting lines in the 12:00 region and remove a sample of the material from the “front“ at least 100 mm in length. The material sample shall be cleanly removed from the metal support. The te
13、st specimen will be taken from this sample and must use the material along the parting line of the outer diameter. 3.4.3.1 Room Temperature (23 +/- 2 C) Test Method: Cut 13 x 100 mm sample from the specimen. Grasp sample firmly at each end, place over mandrel painted side up, and bend around mandrel
14、 180 degrees min. Use a 25 mm diameter mandrel. No cracking of “Class A“ surface when bent over mandrel. ENGINEERING MATERIAL SPECIFICATIONWSS-M98P12-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 7 3.4.3.2 Cold Temperature (- 30 +/- 2 C) Test Method: Cut 1
15、3 x 100 mm sample from the specimen. Place sample, mandrel and gloves into a freezer at - 30 +/- 2 C for 4 h min. Open freezer, put on gloves and grasp sample firmly at each end, place over mandrel painted side up, and bend around mandrel 180 min. Use a 25 mm mandrel. (A room temperature pair of glo
16、ves may be worn inside the gloves that have been conditioned at - 30 C.) No cracking of “Class A” surface when bent over mandrel. 3.4.4 Long Term Heat Exposure, min Rating 4 7 days at 100 +/- 2 C Appearance Evaluation: No evidence of cracks, blisters, peeling, delamination, or change in gloss when c
17、ompared with original unaged sample. Evaluate color change per ISO 150-A02 / AATCC Procedure 1. Parts exposed per para 3.4.4 shall be immersed in water for 24 h per FLTM BI 104-01. No blistering, softening, or loss of adhesion when tested per para 3.4.1 within 30 minutes of removal from water on all
18、 paint systems. 3.4.5 Heat, Humidity and Cold Cycle Test, min Rating 4 (AATCC Evaluation Procedure 1) Test Method: Expose the steering wheel assembly to 1 cycle of the following: 5 h at -40 +/- 2 C 30 min at 23 +/- 2 C and 50 +/- 5 % Relative Humidity 5 h at 100 +/- 2 C 30 min at 23 +/- 2 C and 50 +
19、/- 5 % Relative Humidity 2 h at 50 +/- 2 C and 95 +/- 5 % Relative Humidity 30 min at 23 +/- 2 C and 50 +/- 5 % Relative Humidity 5 h at -40 +/- 2 C 30 min at 23 +/- 2 C and 50 +/- 5 % Relative Humidity 5 h at 100 +/- 2 C Appearance Evaluation: No evidence of cracks, blisters, peeling, delamination,
20、 or change in gloss when compared with original unaged sample. Evaluate color change per ISO 150-A02 / AATCC Procedure 1. Parts exposed per para 3.4.5 shall be immersed in water for 24 h per FLTM BI 104-01. No blistering, softening, or loss of adhesion when tested per para 3.4.1 within 30 minutes of
21、 removal from water on all paint systems. 3.4.6 Resistance to Fade 3.4.6.1 Accelerated Weathering, min Rating 4 (FLTM BO 116-01 at 2406.4 kJ/m2 Gloss Change 30% or SAE J2412* at 1240 kJ/m2, ISO 105 A-02/AATCC Evaluation Procedure 1) *Note the FLTM is the preferred method note method used on data sub
22、mission form. Atlas Water Cooled, Rotary Drum Xenon-Arc Apparatus only Duplicate panels are required, one for appearance evaluation and one for water immersion. ENGINEERING MATERIAL SPECIFICATIONWSS-M98P12-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 7 Af
23、ter the color and gloss measurements, one of the weathered panels shall be subjected to the water immersion test for 24 h per FLTM BI 104-01 and must meet requirements per para 3.4.1. Flexibility following Xenon Exposure per para 3.4.3.1 3.4.6.2 Florida Weathering Under Glass 1 year submission (FLTM
24、 BI 160-01, ISO 105 A-02/AATCC required for new Evaluation Procedure 1) technology only 12 months Rating 4, min Gloss change 30% Test parts shall be exposed under glass in the Miami, Florida area, black box, under glass at a 5 angle facing South. After the color and gloss measurements, one of the we
25、athered panels shall be subjected to the water immersion test for 24 h per FLTM BI 104-01 and meet the requirements of para 3.4.1. 3.4.7 Soiling and Cleanability, min (FLTM BN 112-08, ISO 105-A02/ AATCC Evaluation Procedure 2) Testing Agents: Synthetic Soil, coffee, NLGI Grease 2 Cleanability Rating
26、 3 min 3.4.8 Resistance to Scuffing, min 1000 cycles (SAE J365, smooth plaque) Measure and report the paint film thickness of the panel and run a min of 1000 cycles for every 25 micrometer of paint thickness on the panel. No evidence of lifting, peeling, excessive scuffing or no discoloration of the
27、 surface. No permanent parallel deformation to the surface. No wear through of the coating to the substrate. 3.4.9 Abrasion Resistance, min The paint film (SAE J948, CS-10 wheels) shall show no abrasion through to the substrate The Control Plan shall state the film thickness as specified in para. 3.
28、2.1. 3.4.9.1 Smooth Plaques 500 g load 1,000 cycles min 1,000 cycles/25 m paint thickness 3.4.10 High Performance Paint Adhesion* *Note method used on data submission form FLTM BI 107-05 Adhesion, min Rating 19 Alternate Method FLTM BO 160-04 Adhesion, min No Adhesion Loss No loss of gloss or any ot
29、her surface deterioration. ENGINEERING MATERIAL SPECIFICATIONWSS-M98P12-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 7 3.4.11 Crocking, min, discoloration Rating 4 (FLTM BN 107-01, 10 cycles, AATCC Evaluation Procedure 2) 1) Deionized water 2) Dry 3.4.12
30、Migration Staining, min Rating 5 (FLTM BN 103-01/ISO 105 A-02, AATCC Evaluation Procedure 1) No evidence of exudation, adhesion (tackiness), separation, color transfer, or flattening of embossing when placed face to face with itself. 3.4.13 Perspiration Resistance, min (FLTM BI 113-07, ISO 105-A02/A
31、ATCC Evaluation Procedure 1) Acid Perspiration Solution Rating 4 Alkaline Perspiration Solution Rating 4 3.4.14 Resistance to Water and Soap Spotting, Rating 4 Max discoloration (FLTM BI 113-01, ISO 105-A02/ AATCC Evaluation Procedure 1) No film softening allowed for any solution. 3.4.15 Resistance
32、to Chemicals, min Rating 4 (AATCC Evaluation Procedure 2) 1. Petroleum Naphtha 2. SAE 10 W 30 Motor Oil 3. IPA (50 % V/V. IPA and deionized water) Test Method: Apply 2 to 5 ml of each chemical to separate areas (do not allow mixing) of the part. Cover each spot with a watch glass to prevent evaporat
33、ion. Expose for 1 h at 23 +/- 2 C. Remove watch glass and wipe with a soft white cloth. Thoroughly wash test area with soap and water and dry. Perform adhesion per (FLTM BI 106-01, Method D) on test area within 1 h. Requirement per para 3.4.1. 3.4.16 Resistance to Scratch and Mar, max (see Note 1 fo
34、r definitions) (FLTM BO 162-01, visual evaluation) Scratch 2 N, Rating 1 Marring 2 N, Rating 2 Whitening/Color Change 7 N, Rating 1 Note 1: Scratch defined as deformation or cutting of the grained/ungrained surface. Marring defined as a gloss change or burnishing with no deformation or whitening of
35、the surface. Whitening/Color Change defined as a white line or color change visible at all angles for mold in color materials. ENGINEERING MATERIAL SPECIFICATIONWSS-M98P12-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 7 3.4.17 Resistance to Cleaning Agents
36、, min Rating 4 (FLTM BN 107-01, 10 cycles, AATCC Evaluation Procedure 2) Test Procedure: Saturate white cotton cloth with the cleaners listed. Evaluate according to the AATCC Scale. Cleaners 1) Window cleaner 2) All purpose cleaner 3.4.18 Resistance to Suntan Lotion and Rating 3 Insect Repellant, ma
37、x (FLTM BI 113-08, 23C and 74C) No loss of adhesion 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning
38、16 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.7 ODOR, max Rating 3 (FLTM BO 131-03) 3.8 PROCESS WINDOW DEFINITION The supplier shall perform a Design of Experiment (Response Surface Analysis is recommended) to determine the process window of the sub
39、strate/paint combination. The three variables/parameters to be included in the design are bake temperature, bake time, and film thickness. An initial screening experiment should be run to determine what levels should be tested for the variables/parameters. This screening experiment should be reviewe
40、d with the materials engineer to set up the final DOE. Responses for the DOE shall include, but are not limited to, the following: Film Thickness, para 3.2.1 Gloss, para 3.3.2 Initial Adhesion, para 3.4.1 Water Resistance, para 3.4.2 Naptha or Xylene Crocking (2k only), FLTM BN 107-01, 10 cycles ENG
41、INEERING MATERIAL SPECIFICATIONWSS-M98P12-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 7 of 7 Table 1 Test Sample Sizes DV* PV* Paragraph Sample Size New Construction / New Top Coat Substrate Change Color Change 3.2.1 Film Thickness 1 X X X 3.3 Appearance 1 X
42、X X 3.4.1 Adhesion 3 X X X X 3.4.2 Water Resistance 3 X X X X 3.4.3 Flexibility (N/A for wood) 3 X X 3.4.4 Long Term Heat Exposure 1 X X X X 3.4.5 Heat, Humidity, and Cold Cycle Test 1 X X X X 3.4.6.1 Accelerated Weathering 1 X X X 3.4.6.2 Florida Weathering 1 X X X 3.4.7 Soiling and Cleanability 3
43、X X 3.4.8 Resistance to Scuffing 3 X X 3.4.9 Abrasion Resistance 3 X X 3.4.10 High Performance Paint Adhesion 3 X X 3.4.11 Crocking, min 3 X 3.4.12 Migration Staining 1 X 3.4.13 Perspiration Resistance 1 X 3.4.14 Resistance to Water and Soap Spotting 1 X 3.4.15 Resistance to Chemicals 1 X 3.4.16 Res
44、istance to Scratching 3 X 3.4.17 Resistance to Cleaning Agents 1 X 3.4.18 Resistance to Suntan Lotion and Insect Repellant 1 X X X 3.5 Flammability 1 X X 3.6 Fogging 3 specimens per part X X 3.7 Odor 1 per part per condition X X *Note: Pre-DV and DV testing to be performed on plaques or part, PV testing to be performed on parts only.
