1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 03 06 N Status No usage or replacement G. Weber, NA 2003 10 14 Revised Para 3.0 inserted; para 3.1, 3.7 and 4 deleted 1985 09 25 CE3PRD963100E174 Released J. C. Webster Controlled document at www.MATS Copyright 2012, Ford Global T
2、echnologies, Inc. Page 1 of 1 SINTERED IRON - MOLYBDENUM WSE-M10A75-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a sintered molybdenum steel. 2. APPLICATION This specification was released originally for material used for intake valve seat inserts. 3. REQUIR
3、EMENTS (On Final Part) 3.0 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 CHEMICAL COMPOSITION Total Carbon 0.9 - 2.0 Combined Carbon 0.9 - 1.2 Copper 2.0 - 6.0 Mol
4、ybdenum 0.4 - 0.8 Other Elements 2.0 max Iron 89.2 min 3.3 DENSITY (ISO 2738/ASTM B 328) 6.4 - 6.8 g/cm3 3.4 APPARENT HARDNESS (Attribute Data Only) (ISO 4498/1/ASTM E 18) HR 15 N 50 - 70 See Engineering Drawing for hardness test location. 3.5 MICROSTRUCTURE The part microstructure shall consist of a pearlitic matrix with 1% maximum free copper. There shall be 2 - 6% Fe3C in the form of a grain boundary network. Porosity will be evenly distributed. No surface oxide network penetration is permitted. 3.6 SURFACE CONDITION Sintering marks on the back face shall not exceed an area of 3 mm2
