1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 09 19 Revised Updated and renumbered 1993 02 25 NE01-E10127076-081 Released J.C. Webster NAAO G Lane EAO Printed copies are uncontrolled Page 1 of 1 Copyright 2002, Ford Global Technologies, Inc. CAST S
2、TEEL, VALVE SEAT INSERT WSE-M1A330-A1 1. SCOPE The material defined by this specification is a molybdenum, tungsten, chromium alloy cast steel. 2. APPLICATION This specification was released originally for material used for intake valve seat insert and replaces ESE-M1A152-A. 3. REQUIREMENTS 3.1 STAN
3、DARD 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 Carbon 1.20 - 1.50 Manganese 0.30 - 0.60 Silicon 0.30 - 0.60 Chromium 3.50 - 4.25 Molybdenum 6.0 - 7
4、.0 Copper 0.25 max Nickel 1.00 max Tungsten 5.0 - 6.0 Iron Balance 3.3 HARDNESS 35 - 46 HRC (ASTM E 18/ISO 4498) 3.4 SURFACE CONDITION Surfaces shall be free of scale and rust. Nicks, cracks, burrs and depressions shall not exceed 0.25 mm in any direction. Visual inspection is to be performed under white light without aid of magnification.
