1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 5 2014 11 25 Editorial Split from B2/3 suffix G. Weber, NA 2011 06 27 Revised Updated plating thickness and corrosion section. C. Mracna, NA 2008 04 18 Activated C. Mracna, NA Controlled document at www.MATS Copyright 2014, Ford Global T
2、echnologies, LLC Page 1 of 3 PLATING, BRIGHT OR LOW GLOSS DECORATIVE STAINLESS STEEL WSS-M1P96-B1 (CHROME FLASH), LEVEL 1 CORROSION 1. SCOPE These specifications define performance requirements for electrodeposited chromium flash on polished stainless steel surfaces. 2. APPLICATION These specificati
3、ons were released originally for a coating where a bright or low gloss decorative and/or protective metallic finish is required on stainless steel surfaces such as exhaust outlet tips or interior and exterior moldings. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppl
4、iers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 APPEARANCE All parts shall have the finish bright or low gloss as specified on the engineering drawing. The plated parts shall be free from surface imperfections. Bright or low g
5、loss parts shall match the approved Styling master sample for appearance. 3.2.1 Low Gloss Finishes These finishes must be applied to the stainless steel, before chrome flashing. 3.2.2 Buffing Chromium Plating Because of the potential adverse effect on corrosion resistance, buffing of final chromium
6、plating on parts is not permitted. ENGINEERING MATERIAL SPECIFICATION WSS-M1P96-B1 Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC Page 2 of 3 3.3 ADHESION (ASTM B 571) Adhesion of the plate to the base metal shall conform to the following requirements: 3.3.1 Sawing No
7、lifting or peeling of the electroplate from the substrate is permitted following the sawing test. 3.3.2 Bending No peeling, flaking, or lift-off of the electroplate from the substrate is permitted following the bend test. 3.4 HEAT RESISTANCE Exhaust tips must pass heat test of 15 minutes in air at 4
8、00 C without discoloring. 3.5 PLATING THICKNESS 0.25 microns min (ASTM B 504) 3.6 CYCLIC CORROSION RESISTANCE 9 weeks (CETP 00.00-L-467 with a 315C heat soak with ice water bath quench once per week) Chrome or Bright Metal Polish: Motorcraft Custom Bright Metal Cleaner (p/n ZC-15) At 3 weeks, the pa
9、rt must be rated no worse than Grade 6 as defined by ASTM D 610. The weld seam shall be excluded from the area of assessment as long as it is located at the 6 oclock position (+/- 10 degrees) of the exhaust tip. 645 mm2 of surface exhibiting the highest amount of corrosion product (excluding weld se
10、am) shall be hand polished with the approved chrome or bright metal polish. Upon inspection after polishing, surface shall be representative of an as-plated condition with no more than three pits of 0.5 mm2 allowed. At test termination, components must have an acceptable appearance after cleaning wi
11、th chrome or bright metal polish. The acceptable appearance shall be based on a jury evaluation of at least two people, one person from Ford Exhaust Engineering, and the other from either Ford Exhaust or Materials Engineering. Final judgment of corrosion performance should be based on visibility of
12、the parts as observed from the rear of the vehicle as described by in Total Vehicle Corrosion Resistance requirement 18-0040. 3.7 SURFACE FINISH When a low gloss finish is specified for glare reduction surfaces to meet FMVSS requirements, it shall be designated on the Engineering Drawing. 4. GENERAL
13、 INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 4.1 SIGNIFICANT SURFACES Unless otherwise specified on the engineering drawing, significant surfaces are defined as those surfaces of the finished part that: Are
14、 directly visible and/or visible by reflection when the finished part is assembled in car position. ENGINEERING MATERIAL SPECIFICATION WSS-M1P96-B1 Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC Page 3 of 3 Can be the source of corrosion products directly visible or vi
15、sible reflection. Sharp edges, recessed areas, rough surfaces, or welds may have reduced corrosion resistance at these locations. 4.2 RECOMMENDED TESTING REQUIREMENTS FOR DESIGN VALIDATION, PRODUCTION VALIDATION, AND SREA. Plating performance is a function of surface preparation, and plating applica
16、tion. For established plating lines, this may permit a reduced test schedule to validate compliance to this specification. Use the following table to determine the recommend test plan depending on the situation. Table 1 New Plating Line (No Ford History) Existing Plating Line Test Requirements Exist
17、ing part Example A New Part for a Known Plater Example B Process Change Example C 3.3 Adhesion X X Contact Materials Engineering 3.4 Heat Resistance X 3.5 Plating Thickness X X 3.6 Cyclic Corrosion Resistance X X1 Example A. Plater goes out of business. New plater has never plated parts for Ford. Ex
18、ample B. Tier 2 plater is asked to plate different parts on the same plating line. Example C. 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 platings that involve change
19、s in vehicle environment, such as increased stone chipping or increased temperature. These changes may require vehicle testing, consult SDS/ARL requirements. 5. SUMMARY OF REVISIONS 2010 12 14 o Moved WSS-M1P96-B2 to N-Status with WSS-M1P96-B1 as the replacement. o Updated Cyclic Corrosion Test Meth
20、od Requirements square4 12 weeks - 9 weeks square4 Added 315C heat soak with ice water bath quench 1x/week square4 Added 3 week evaluation square4 Revise post test evaluation to include cleaning o Added Recommended Testing Table 2011 06 27 Increased min plating thickness from 0.13 microns to 0.25 microns min Added 3 week inspection and evaluation criteria to cyclic corrosion test.
