1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 01 31 Revised Updated format 2002 09 09 Activated R. Thomas Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 4 SINTERED STEEL, COPPER, PHOSPHORUS ALLOY WSS-M10A103-A1 1. SCOPE The material defined by
2、 this specification is a sintered copper-phosphorus alloyed iron-base powder metal. 2. APPLICATION This specification was released originally for engine cylinder block main bearing caps. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must con
3、form to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION, % by Weight (ASTM E 415/ASTM E 350/ASTM E 1019) Carbon 0.45 - 0.65 Copper 3.00 - 5.00 Manganese 0.25 - 0.45 Phosphorus 0.45 - 0.65 Sulfur 0.05 - 0.15 Others Each 0.20 Max. Others Total 2.0
4、0 Max. Iron Balance 3.3 DENSITY, g/cc min 6.7 (ISO 2738/ASTM B 328) For in-process (IP) testing, the method and frequency of testing shall be specified in the Supplier Control Plan, and agreed upon between Ford and the supplier. The component location designated for sampling shall be described in th
5、e Engineering Specification (ES) or on the Engineering Drawing. This density requirement applies to critical areas. Critical areas are specified on Engineering Specification or on Engineering Drawing. Density will vary across part cross section and lower density is allowed in non-critical areas. ENG
6、INEERING MATERIAL SPECIFICATIONWSS-M10A103-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 4 3.4 MECHANICAL PROPERTIES In order to confirm Analytical Analysis calculations for new designs, the property specifications below shall be verified. Testing location
7、s, frequencies and procedures will be outlined in the Engineering Specification or on the Engineering Drawing and will form part of the agreed Control Plan. It is not recommended to machine test bars from a powdered metal component due to density variation and potential stresses induced during machi
8、ning. Rather, test specimens will be separately pressed and sintered to the required dimensions from the same material lot (s) as the component they represent. Test blank density shall be not greater than the measured critical area(s) in the components they represent. 3.4.1 Tensile Properties (ISO 2
9、740/ ISO 6892/ASTM E 8M) Tensile Strength, MPa, min 450 0.2% Offset Yield, MPa, min 350 Elongation, % (extensometer), min 2.5 3.4.2 Compressive Yield Strength MPa, min 350 (ASTM E 9M) 3.4.3 Shear Strength, MPa, min 200 (ASTM B 565) 3.4.4 Fatigue Endurance Limit 165 at 10e7 cycles, MPa, min (ASTM E 4
10、66, R = -1) 3.5 MICROSTRUCTURE (ASTM E 3) The part will have a microstructure consisting of lamellar pearlite and ferrite with free copper and manganese sulfide particles. Microporosity shall be evenly distributed. Component microstructure shall be measured by taking sections as specified in the Eng
11、ineering Specification or Engineering Drawing. 3.5.1 Ferrite 60% max (ASTM E 562) 3.5.2 Partial Decarburization 0.15 mm max (ASTM E 1077) Samples for decarburization evaluation shall be taken from critical locations as defined in the Engineering Specification or on the Engineering Drawing. It is exp
12、ected, however, that these decarburization limits be met in all areas of the component. Complete surface decarburization is not permitted. 3.5.3 Macro porosity (0.5 mm) None permitted 3.5.4 Non-Metallic Inclusions (ASTM E 796) 0.20 mm max ENGINEERING MATERIAL SPECIFICATIONWSS-M10A103-A1Printed copie
13、s are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 4 3.6 COMPONENT TESTS Test procedure(s) will be specified in the Engineering Specification. Requirement(s) for specific bearing cap will be specified on the Engineering Drawing. 4. GENERAL INFORMATION The information given be
14、low is provided for clarification and assistance in meeting the requirements of this specification. 4.1 REFERENCE DOCUMENTS ASTM B 328 ASTM B 565 ASTM B 796 ASTM B 797 ASTM E 3 ASTM E 8M ASTM E 9M ASTM E 10 ASTM E 18 ASTM E 23 ASTM E 350 ASTM E 415 ASTM E 466 ASTM E 562 ASTM E 1019 ASTM E 1077 ISO 2
15、738 ISO 2740 ISO 3369 ISO 5754 ISO 6506 ISO 6892 WSS-M99P9999-A1 WSS-M99P1111-A 4.2 MECHANICAL AND PHYSICAL PROPERTY ESTIMATES FOR ANALYTICAL ANALYSES Density (g/cc) 6.5 6.7 6.9 (ISO 2738/ASTM B 328) Tensile Properties (ISO 2740/ISO 6892/ ASTM E 8M) Tensile Strength, MPa, min 400 450 480 0.2% Offset
16、 Yield, MPa, min 320 350 380 Elongation, % (extensometer), min 2.5 2.5 2.5 Compressive Yield Strength 320 350 380 MPa, min (ASTM E 9M) Shear Strength, MPa, min 175 200 220 (ASTM B 565) Fatigue Endurance Limit 149 165 176 at 10e7 cycles, MPa, min (ASTM E 466, R = -1) Impact Strength, Charpy Unnotched
17、 (ASTM E 23/ISO 5754) (J) Room Temperature 4.0 6.8 8.0 - 20 C 4.0 5.4 5.4 - 50 C 2.7 4.0 5.4 ENGINEERING MATERIAL SPECIFICATIONWSS-M10A103-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 4 Ultimate Compressive Strength (MPa) 1700 Elastic Modulus (GPa) 110 Po
18、issons Ratio 0.27 Apparent Hardness ASTM E10/ISO6506) (HRB) 70 - 85 Bending Fatigue Strength (MPa) 160 Coefficient of Thermal Expansion 11.2 (cm/cm/ oC) Hardness will be measured on the surface. The exact locations for testing will be described in the Engineering Specification or on the Engineering Drawing.
