1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 04 2013 10 18 Editorial See Summary of Revisions C. Mracna, NA 2013 02 18 Revised Added Sec. 3.4.4 C. Mracna, NA 2009 03 17 Activated Activated B1, B2, B3, B4, B5, B6 C. Mracna, NA Controlled document at www.MATS Copyright 2013, Ford Glo
2、bal Technologies, LLC Page 1 of 6 PAINT PERFORMANCE, METAL SUBSTRATES, HEAT RESISTANT WSS-M2P170-B1 COATING, LOW VISIBILITY, 250 C, max PAINT PERFORMANCE, METAL SUBSTRATES, HEAT RESISTANT WSS-M2P170-B2 COATING, MODERATE VISIBILITY, 250 C, max PAINT PERFORMANCE, METAL SUBSTRATES, HEAT RESISTANT WSS-M
3、2P170-B3 COATING, LOW VISIBILITY, 450 C, max PAINT PERFORMANCE, METAL SUBSTRATES, HEAT RESISTANT WSS-M2P170-B4 COATING, MODERATE VISIBILITY, 450 C, max PAINT PERFORMANCE, METAL SUBSTRATES, HEAT RESISTANT WSS-M2P170-B5 COATING, LOW VISIBILITY, 650 C, max PAINT PERFORMANCE, METAL SUBSTRATES, HEAT RESI
4、STANT WSS-M2P170-B6 COATING, MODERATE VISIBILITY, 650C, max PAINT PERFORMANCE, METAL SUBSTRATES, HEAT RESISTANT WSS-M2P170-B7 COATING, HIGH VISIBILITY, 450C, max 1. SCOPE These specifications define the minimum heat and corrosion performance requirements for chassis and engine components. 2. APPLICA
5、TION WSS-M2P170-B1: To be used on non-visible engine brackets, brake components, and exhaust hangers where operating temperatures do not exceed 250 C. WSS-M2P170-B2: To be used on moderately visible engine brackets, drums, rotors, and calipers where operating temperatures do not exceed 250 C. WSS-M2
6、P170-B3: To be used on non-visible cold-end exhaust components, such as exhaust hangers, where corrosion protection is desired and where operating temperatures do not exceed 450 C. WSS-M2P170-B4: To be used on moderately visible cold-end exhaust components, such as muffler rear heads and tail pipes,
7、 where operating temperatures do not exceed 450 C. WSS-M2P170-B5: To be used on non-visible hot-end exhaust components, such as catalyst hardware, where exceptional heat and corrosion protection properties are required. Temperature resistance is 650 C maximum. WSS-M2P170-B6: To be used on moderately
8、 visible hot-end exhaust components, such as exhaust manifold components, where exceptional heat and corrosion protection properties are required. Temperature resistance is 650 C maximum. ENGINEERING MATERIAL SPECIFICATION WSS-M2P170-B1/B2/B3/B4/B5/B6/B7 Copyright 2013, Ford Global Technologies, LLC
9、 Page 2 of 6 WSS-M2P170-B7: To be used on highly visible cold-end exhaust components, such as decorative exhaust tips, where corrosion protection is desired and operating temperatures do not exceed 450 C. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part
10、producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 SUBSTRATE PROPERTIES 3.2.1 Substrate As specified on the Engineering Drawing. Except for Chip Resistance, all requirements of these specifications must be validated with actual production inte
11、nt components. 3.2.2 Metal Preparation All surfaces to be coated must be free from oil, grease, rust and other foreign materials. Phosphating or other surface preparations must comply with the coating manufacturers recommendations. 3.3 FILM PROPERITES 3.3.1 Color As specified on Engineering Drawing
12、3.3.2 Initial Hardness The finish shall be sufficiently cured at the time of packing to withstand normal handling and shipping without damage. 3.3.3 Adhesion (ASTM D3359) Method A, X-cut Tape Test 4A or better Method B, Cross-Cut Tape Test 4B or better Available surface area and contour of the compo
13、nent determines which method to use. If both methods are suitable, then Method B is preferred. When using Method A, a minimum of three X-cuts per part is required to increase sampling area. Adhesion tests to be performed 24 hours after curing, per manufacturers recommendation. For air dry coatings,
14、age samples for 72 hours prior to the adhesion test. 3.3.4 Film Thickness (FLTM BI 117-01, ASTM B487) Coating thickness must be sufficient to meet all the performance requirements of these specifications. Minimum coating thickness must be listed on the print and should be based on production intent
15、parts. Example: Company X High Temp Paint 123 per WSS-M2P170-B1, 20 m min ENGINEERING MATERIAL SPECIFICATION WSS-M2P170-B1/B2/B3/B4/B5/B6/B7 Copyright 2013, Ford Global Technologies, LLC Page 3 of 6 3.4 RESISTANCE PROPERTIES 3.4.1 Chip Resistance, max 5B (SAE J400, Method C, Method II) Test shall be
16、 conducted on production intent components or on panels. The test panel must have the same substrate (i.e. cold rolled/hot rolled steel, cast iron, wrought/cast aluminum) and be painted on the same system as the production intent component. Or (FLTM BI 157-06) 6 3.4.2 Laboratory Accelerated Cyclic C
17、orrosion Test (CETP 00.00-L-467, ASTM D610) Prior to corrosion testing, samples must be preconditioned per the heat resistance test (sec. 3.4.6). For air dry coatings, samples must be aged at ambient conditions for 72 hours prior to testing. Air dry coatings shall be tested with and without heat age
18、 preconditioning. WSS-M2P170-B1/B3/B5 4 weeks WSS-M2P170-B2/B4/B6 6 weeks WSS-M2P170-B7 9 weeks The part must be rated no worse than Grade 6 as defined by ASTM D610. Parts with sharp edges, recessed areas, rough surfaces, or welds may have reduced corrosion resistance at these locations. For exhaust
19、 components, a 315C heat soak with ice water bath quench once per week shall be performed. At test termination, highly visible components must have an acceptable as-installed appearance after cleaning and/or polishing based on a jury evaluation of at least two people, one person from Ford Product En
20、gineering, and the other from either Ford Product or Materials Engineering. Final judgment of corrosion performance should be based on visibility of the parts as observed from the rear, engine compartment, or in the wheel wells of the vehicle as described by in Total Vehicle Corrosion Resistance Tru
21、stmark requirement 18-0040. 3.4.3 Water Resistance, min (FLTM BI 104-01, ASTM D714) Immerse samples 240 hours. Allow paint film to recover 1 hour at room temperature after immersion before evaluating. No softening, rust, dulling, color change and/or loss of adhesion. Blistering shall not exceed size
22、 8, Few per ASTM D714. Adhesion shall meet the requirements in sec. 3.3.3 3.4.4 Synthetic Exhaust Condensate Resistance (WSS-M2P170-B7 only, if applicable) Prepare the condensate by dissolving the following chemicals into deionized water: Anhydrous Sodium Sulfate (Na2SO4) 7.391 g Sodium Chloride (Na
23、Cl) 0.165 g Sodium Nitrate (NaNO3) 0.137 g Concentrated Formic Acid (HCOOH) 0.100 g Weigh each salt into a weighing boat or weighing paper using an analytical balance, and then transfer to a 1 L volumetric flask. Weigh the formic acid using a small glass vial or beaker, and then rinse to the volumet
24、ric flask using deionized water. Add deionized water to the flask to allow the salts to dissolve. Once the salts have completely dissolved, dilute to 1 L volume. ENGINEERING MATERIAL SPECIFICATION WSS-M2P170-B1/B2/B3/B4/B5/B6/B7 Copyright 2013, Ford Global Technologies, LLC Page 4 of 6 The measured
25、pH of fresh synthetic exhaust condensate solution shall be in the 3.3 3.5 range. A test cycle consists of the following: 16 hours exposure to boiling synthetic exhaust condensate 1 hour in an oven at 260C 6 hours in a humidity cabinet at 85% relative humidity and at 52C Test coupons shall be placed
26、in a separate 1 L glass beakers for the boiling condensate exposure. A watchglass or reflux apparatus shall be used to limit the amount of test solution evaporation during boiling. Fresh test solution shall be used for each 16 hour exposure. After 5 test cycles, the following acceptance criteria sha
27、ll be met: The coating shall show no visual evidence of degradation, including blistering, cracking, delamination, etc. Slight chalking of the paint is allowed. The paint film thickness shall be maintain at least 50% of its original thickness. 3.4.5 Fluid Resistance (FLTM BI 168-01, Method A, Gasoli
28、ne, Diesel, Coolant, Engine Oil, and Motorcraft wheel cleaner - P/N ZC-37, Method A) The finish shall not blister or show more than slight softening or dulling. Adhesion shall meet the requirements in sec. 3.3.3. Cold-end exhaust components are excluded from this requirement. 3.4.6 Heat Resistance H
29、eat cycle samples as follows: WSS-M2P170-B1/B2 250 C, 1 hour, 0C water quench WSS-M2P170-B3/B4/B7 450 C, 1 hour, 0C water quench WSS-M2P170-B5/B6 650 C, 1 hour, 0C water quench Upon removal, the samples shall show no blistering, chipping, flaking or cracking or loss of adhesion. Adhesion tests are t
30、o be performed 24 hours after heat cycle testing and shall meet the requirements in sec. 3.3.3. 3.5 INFORMATION TO INCLUDE ON DRAWING The product code and trade name for the specific high temperature paint shall be listed on the engineering drawing. Example: Company X High Temp Paint 123 per WSS-M2P
31、170-B1, 20 m min 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. ENGINEERING MATERIAL SPECIFICATION WSS-M2P170-B1/B2/B3/B4/B5/B6/B
32、7 Copyright 2013, Ford Global Technologies, LLC Page 5 of 6 4.1 SURFACE PREPARATION Descaled parts can be rated according to ASTM D2200 method B. The SSPC BSP rating achieved on the design intent parts should appear in the control plan to indicate the level of cleaning. Example: Descale cleaning lev
33、el SSPC BSP 10 or better. 4.2 RECOMMENDED TESTING REQUIREMENT 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 reduced test schedule t
34、o validate compliance to this specification. Use the following table to determine the recommend test plan depending on the situation. 5. SUMMARY OF REVISIONS 2013 10 18 Editorial, corrected typo in section 3.4.2 referencing section 3.4.5 changed to 3.4.6 2013 02 18 Added Sec. 3.4.4. Synthetic Exhaus
35、t Condensate Resistance 2011 03 17 Added B7 Suffix and corresponding requirements. 2010 05 25 Replaced DV PV test table with recommended test table with examples. Cyclic corrosion changed from 3 to 4 for correlation to R-343. Removed black as the default color. ENGINEERING MATERIAL SPECIFICATION WSS
36、-M2P170-B1/B2/B3/B4/B5/B6/B7 Copyright 2013, Ford Global Technologies, LLC Page 6 of 6 Table 1 New Coating Material 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 appli
37、cation Example C Switching Known Paints on same part Example D New Part/Same materials Example E Process Change Example F 3.3.3 Adhesion X X X X X Contact Materials Engineering 3.3.4 Film Thickness X X X X X 3.4.1 Chip Resistance X X X1 3.4.2 Laboratory Accelerated Cyclic Corrosion X X X1 3.4.3 Wate
38、r Resistance X X X X 3.4.4 Synthetic Exhaust Condensate Resistance X 3.4.5 Fluid Resistance X 3.4.6 Heat Resistance X X X1 Example A. A new coating is developed by a paint manufacture for automotive applications Example B. Painter goes out of business. New painter uses the same paint, but has never
39、painted parts for Ford. Example C. Tier 2 painter for mufflers is asked to coat brackets on the same paint line. Example D. Brake supplier is switching paints on their in-house paint line. Both paints are widely used at Ford. Example E. Rotor supplier is painting the first run of PPAP parts for the
40、new model program on the paint line that supports current model. Example F. The level of testing is highly dependant 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.
