1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Ver 3 2010 12 14 Revised/ B2 - N-STATUS B2 replaced by WSS-M1P96-B1, Revised cyclic corrosion test method C. Mracna, NA2010 02 12 Revised Updated cyclic corrosion test method in sec. 3.6.2 C. Mracna, NA2008 04 18 Activated C. Mracna, NA Printe
2、d copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 3 PLATING, BRIGHT OR LOW GLOSS DECORATIVE STAINLESS STEEL WSS-M1P96-B1 (CHROME FLASH), LEVEL 1 CORROSION PLATING, BRIGHT OR LOW GLOSS DECORATIVE STAINLESS STEEL N-STATUS WSS-M1P96-B2 (CHROME FLASH), LEVEL 2 CORROSION N
3、-STATUS PLATING, BRIGHT OR LOW GLOSS DECORATIVE STAINLESS STEEL N-STATUS WSS-M1P96-B3 (CHROME FLASH), LEVEL 3 CORROSION 1. SCOPE These specifications define performance requirements for electrodeposited chromium flash on polished stainless steel surfaces. 2. APPLICATION These specifications were rel
4、eased 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 suppliers and par
5、t 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 gloss parts s
6、hall 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 plating on p
7、arts is not permitted. ENGINEERING MATERIAL SPECIFICATIONWSS-M1P96-B1/B2/B3 Printed copies are uncontrolled Copyright 2010, 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 lifting
8、 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 400 C wi
9、thout discoloring. 3.5 PLATING THICKNESS 0.13 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) At 3 weeks, the part must be rated no worse than Grade 6 as defined by ASTM D 610. At test termination, com
10、ponents must have an acceptable appearance after cleaning with 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 judgmen
11、t of corrosion performance should be based on visibility of 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, i
12、t shall be designated on the Engineering Drawing. 4. GENERAL 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
13、are defined as those surfaces of the finished part that: Are directly visible and/or visible by reflection when the finished part is assembled in car position. Can be the source of corrosion products directly visible or visible reflection. Sharp edges, recessed areas, rough surfaces, or welds may ha
14、ve reduced corrosion resistance at these locations. ENGINEERING MATERIAL SPECIFICATIONWSS-M1P96-B1/B2/B3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 4.2 RECOMMENDED TESTING REQUIREMENTS FOR DESIGN VALIDATION, PRODUCTION VALIDATION, AND SREA. Plating perf
15、ormance is a function of surface preparation, and plating application. 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 Lin
16、e (No Ford History) Existing Plating Line Test Requirements Existing part Example A New Part for a Known Plater Example B Process Change Example C 3.3 Adhesion X X 3.4 Heat Resistance X 3.5 Plating Thickness X X3.6 Cyclic Corrosion Resistance X X1Contact Materials Engineering Example A. Plater goes
17、out of business. New plater has never plated parts for Ford. Example 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. 1Potential use of surrogate data Note: This specif
18、ication cannot prove out parts or platings that involve changes 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 Method Requirements 12 weeks - 9 weeks Added 315C heat soak with ice water bath quench 1x/week Added 3 week evaluation Revise post test evaluation to include cleaning o Added Recommended Testing Table
