1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 0 2014 06 27 Released C. Mracna FNA Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC Page 1 of 1 PRETREATMENT SOLUTION, ALUMINUM SUBSTRATE, PICKLING ADDITIVE WSS-M3B83-A2 1. SCOPE The material defined by this
2、 specification is designed to descale aluminum substrates in preparation for pretreatment prior to subsequent adhesive bonding applications. 2. APPLICATION This specification was released originally for a liquid, nitric acid material that is used to descale both sheet and wrought aluminum alloys. Th
3、e material can be applied using both spray and immersion methods. 2.1 LIMITATIONS The material approved to this specification is intended to be used as part of a system with materials approved to specifications WSS-M3B83-A1/A3/A4 resulting in a pretreated substrate that is compliant to the performan
4、ce requirements defined per WSS-M10P12-B2. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 SPECIFIC GRAVITY 1.132 1.152 (Chemetall Test Method QC
5、02, or technical equivalent) 3.3 pH 2.5 (Chemetall Test Method QC-04, or technical equivalent) 3.4 ODOR None 3.5 ACID CONCENTRATION 14.0 17.8 mL titrant (Chemetall Gardotest Procedure 96, or technical equivalent) 3.6 PHYSICAL FORM Liquid 3.7 SHELF LIFE 2 years 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. 5. SUMMARY OF REVISIONS
