1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 09 28 N-STATUS No replacement G. Weber, NA 2003 07 25 Revised Para 3.0 inserted; Para 3.1, 3.6, 4 deleted 1987 08 03 SM/ER1121TC Released R.D. Moore, JAF, BMM, NAAO. JPC Lines EAO Printed copies are uncontrolled Copyright 2010, Ford Globa
2、l Technologies, Inc. Page 1 of 2 PLATING, TIN HOT DIP OVER FERROUS, WSB-M1P9-B COPPER OR COPPER ALLOY PLATING, TIN ELECTRODEPOSITED ON WSB-M1P10-B FERROUS, COPPER OR COPPER ALLOY SURFACES PLATING, TIN ELECTRODEPOSITED ON WSB-M1P11-B FERROUS, COPPER OR COPPER ALLOY SURFACES NOT TO BE USED FOR NEW DES
3、IGN 1. SCOPE These specifications define performance requirements for hot dipped or electrodeposited tin plate on ferrous, copper or copper alloy surfaces. 2. APPLICATION These specifications were released originally to define performance requirements for tin plating finish applications such as cabl
4、e sockets, contact terminals, and various soldering applications. Three levels of performance are defined as follows. WSB-M1P9-B Tinning of ferrous, copper and copper alloys by the hot dip process to facilitate solderability WSB-M1P10-B Electrodeposition of tin on ferrous, copper and copper alloys t
5、o facilitate solderability and provide mild service corrosion protection. WSB-M1P11-B Electrodeposition of tin on ferrous, copper and copper alloys to facilitate solderability and provide moderate service corrosion protection. 3. REQUIREMENTS All requirements identified for each specification must b
6、e met to achieve acceptable field durability. No one requirement, exclusive of others, is capable of ensuring satisfactory performance. Any deviations to the requirements of these specifications may be subject to additional performance requirements. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS
7、 Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). ENGINEERING MATERIAL SPECIFICATIONWSB-M1P9-B WSB-M1P10-B WSB-M1P11-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 2 of 2 3.2 COA
8、TING THICKNESS (ASTM B 659) It is the suppliers responsibility to identify the plating thickness distribution for each unique part design and rack design by mapping the plating racks and plated parts and to employ any special processing techniques, e.g., the use of auxiliary anode and/or shields, re
9、ducing the number of parts per rack etc., which may be required to consistently meet the specified minimum plating thickness on all significant surfaces. The plating thickness requirements identified below apply to all areas of significant surfaces. WSB-M1P9-B 2.5 m min WSB-M1P10-B 2.5 6.5 m WSB-M1P
10、11-B 10.0 m min 3.3 COATING ADHESION (ASTM B 571) Adhesion of the coating to the base metal must conform to the requirements of the following test methods per ASTM B 571, unless otherwise indicated: 3.3.1 Burnishing Test No blisters, lifting, or peeling of the coating from the substrate is permitted
11、 following the burnishing test. 3.3.2 Scribe Grid Test No portion of the coating shall break away from the substrate following the Scribe-Grid test. 3.4 CLEANING PRIOR TO COATING Steel parts containing 0.35% carbon or more at the surface, or heat treated to Rockwell C 30 or higher, shall be cleaned
12、using the principles defined in ASTM B 242, “Preparation of High Carbon Steel for Electroplating“. Steels containing less than 0.35% carbon at the surface, or lower than Rockwell C30 in hardness, shall be cleaned using principles defined in ASTM B 183, “Preparation of Low Carbon Steel for Electropla
13、ting“. 3.5 BRITTLENESS OF PLATED PARTS (Steel parts finished per WSB-M1P10-B OR WSB-M1P11-B only) Parts shall be free from the detrimental effects of hydrogen embrittlement or other factors which result in part brittleness. All heat treating operations, including tempering after quenching or stress
14、relief after cold forming, shall be completed prior to plating. Electroplated steel parts containing 0.35% carbon or more at the surface, or heat treated to Rockwell C 30 or higher, or highly stressed cold worked parts, shall be heated within 1 h maximum after electroplating to a temperature of 205
15、+/- 2 C, for 4 h minimum at heat. Higher temperatures and/or longer times may be used if necessary to avoid any detrimental effects of hydrogen embrittlement. Hardened parts which have been tempered at less than 205 +/- 2 C shall be heated within 1 h maximum after electroplating to a temperature of 150 +/- 2 C for 8 h at heat, or longer if necessary.
