1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 1 2010 09 27 Revised G. Weber, NA 2009 06 24 Activated G. Weber, NA Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 4 DIE CAST ALUMINUM GENERAL PURPOSE WSS-M2A171-A1 DIE CAST ALUMINUM MEDIUM DUTY AP
2、PLICATIONS WSS-M2A171-A2 1. SCOPE The materials defined by these specifications are die cast aluminum alloys for general purpose and medium duty applications. 2. APPLICATION WSS-M2A171-A1 is used to specify die cast components where attributes such as pressure tightness are the main requirement, suc
3、h as water pump housings. WSS-M2A171-A2 is used to specify die cast components where a minimum set of mechanical properties are required. These specifications are not intended to specify the material used for safety-critical components. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERI
4、ALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION, % by Weight (ASTM E34 / ASTM E607 / ASTM E1251) Castings supplied to WSS-M2A171-A1 or -A2 shall be made of a grade chosen from the followi
5、ng list of national standard grades. The chemical composition shall conform to the requirements in the given standard. The grade chosen for a given application shall be listed for reference on the PPAP documentation, and the supplier shall not change the chosen grade without prior engineering approv
6、al (SREA). Standard Grades ASTM B85* UNS A03800, UNS A13800, UNS A03830, UNS A03840 EN 1706 AC46000, AC46200, AC46500 JIS H5302 ADC10, ADCZ10, ADC12, ADCZ12 In addition to the chemical composition requirements within the national standard, the following conditions shall apply: A maximum magnesium co
7、ntent of 0.55% is allowed for both grades For castings supplied to WSS-M2A171-A2, iron, manganese and chromium are further restricted (commonly known as the “sludge factor“) such that (%Fe + (2x%Mn) + (3x%Cr) 2.00% ENGINEERING MATERIAL SPECIFICATIONWSS-M2A171-A1/A2Printed copies are uncontrolled Cop
8、yright 2010, Ford Global Technologies, LLC Page 2 of 4 3.3 MECHANICAL PROPERTIES A1 Castings supplied to WSS-M2A171-A1 are not required to meet a set of minimum mechanical properties. A2 Castings supplied to WSS-M2A171-A2 shall meet the following minimum mechanical properties in the as-cast conditio
9、n (F Temper): Property Machined Bars Cast Bars 0.2% Offset Yield, MPa, min 140 150 Elongation, %, min 0.5 1.0 All test samples shall be machined from cast components. Location(s) and procedure for obtaining test specimen shall be outlined in the component Engineering Specification or on the Engineer
10、ing Drawing/CAD file and shall form part of the agreed Control Plan. Upon agreement between Ford and the supplier, separately cast test bars may be used if the component dimensions or geometry prevent the machining of an adequately sized test bar. 3.4 HARDNESS (ISO 6506/ASTM E10) A1 Castings supplie
11、d to WSS-M2A171-A1 are not required to meet a specific hardness range. A2 80 HB minimum. Location(s) and procedure for testing hardness shall be outlined in the component Engineering Specification or on the Engineering Drawing/CAD file and shall form part of the agreed Control Plan. 3.5 INTERNAL SOU
12、NDNESS AND ACCEPTANCE CRITERIA (ASTM E505) When specified in the component Engineering Specification or on the Engineering Drawing/CAD file, castings shall be checked for internal soundness (for example, shrinkage, porosity and other internal defects) by x-ray inspection. Castings shall display soun
13、dness of ASTM E505 Level 3 or better throughout the casting. In locations on the casting designated as High Impact Areas, soundness of ASTM E505 Level 2 or better is required. Locations designated as High Impact Areas shall be specified in the component Engineering Specification or on the Engineerin
14、g Drawing/CAD file. Frequency of testing shall form part of the agreed Control Plan. Alternate methods of evaluating internal soundness may be utilized, upon agreement between Ford Design Engineering, Ford Materials Engineering, Ford STA and the supplier. Acceptance criteria and frequency of testing
15、 shall form part of the agreed Control Plan. 3.6 CONTROL OF CASTING MANUFACTURING PROCESS Ford Global Manufacturing Standard W-CMS defines a minimum set of required process controls for various casting processes. All castings supplied to WSS-M2A171-A1 or -A2 shall meet the requirements of W-CMS. ENG
16、INEERING MATERIAL SPECIFICATIONWSS-M2A171-A1/A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 4.1 CHEMICAL C
17、OMPOSITION At the latest release of this specification, the chemical composition requirements of the national standard grades referenced in this specification were as follows. Single figures are maximum unless otherwise specified. A03800 A13800 A03830 A03840 AC46000 AC46200 Si 7.5-9.5% 7.5-9.5% 9.5-
18、11.5% 10.5-12.0% 8.0-11.0% 7.5-9.5% Cu 3.0-4.0% 3.0-4.0% 2.0-3.0% 3.0-4.0% 2.0-4.0% 2.0-3.5% Mg 0.10% 0.10% 0.10% 0.10% 0.05-0.55% 0.05-0.55% Zn 3.0% 3.0% 3.0% 3.0% 1.2% 1.2% Fe 2.0% 1.3% 1.3% 1.3% 1.3% 0.8% Mn 0.50% 0.50% 0.50% 0.50% 0.55% 0.15-0.65% Ni 0.50% 0.50% 0.30% 0.50% 0.55% 0.35% Sn 0.35%
19、0.35% 0.15% 0.35% 0.25% 0.15% Ti - - - - 0.25% 0.25% Pb - - - - 0.25% 0.25%Cr - - - - 0.15% - Others (each) - - - - 0.05% 0.05% Others (total) 0.50% 0.50% 0.50% 0.50% 0.25% 0.25% AC46500 ADC10 ADCZ10 ADC12 ADCZ12 Si 8.0-11.0% 7.5-9.5% 7.5-9.5% 9.6-12.0% 9.6-12.0% Cu 2.0-4.0% 2.0-4.0% 2.0-4.0% 1.5-3.
20、5% 1.5-3.5% Mg 0.05-0.55% 0.30% 0.30% 0.30% 0.30% Zn 3.0% 1.0% 3.0% 1.0% 3.0% Fe 1.3% 1.3% 1.3% 1.3% 1.3% Mn 0.55% 0.50% 0.50% 0.50% 0.50% Ni 0.55% 0.50% 0.50% 0.50% 0.50% Sn 0.25% 0.20% 0.20% 0.20% 0.20% Ti 0.25% 0.30% 0.30% 0.30% 0.30% Pb 0.35% 0.20% 0.20% 0.20% 0.20% Cr 0.15% - - - - Others (each
21、) 0.05% - - - - Others (total) 0.25% - - - - ENGINEERING MATERIAL SPECIFICATIONWSS-M2A171-A1/A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4 4.2 INFORMATIVE MATERIAL PROPERTIES (TYPICAL) The following material properties are provided for information only a
22、nd are not required to be measured or verified prior to or during component production. Parameter Hardness, HB 80 110 Ultimate Tensile Strength, MPa (as-cast bars) 320 Ultimate Tensile Strength, MPa (bars machined from casting) 230 Compressive Yield Strength, MPa 140 Shear Strength, MPa 200 Fatigue
23、Endurance Limit, MPa 60 Elastic Modulus, GPa 71 Poissons Ratio 0.33 Density, g/cc 2.7 Coefficient of Linear Thermal Expansion, 20-100 oC, m/m/oC 21.1 Coefficient of Linear Thermal Expansion, 20-200 oC, m/m/oC 21.8 Thermal Conductivity, W/m/oC 100 Specific Heat, J/kg/oC 960 Melting Range, oC 515 595
24、4.3 RECYCLING CODE When required, the recycling code listed on the part drawing and displayed on the part, as per Ford Engineering CAD and Drafting Standard E-4, shall be . 5. SUMMARY OF REVISIONS 2010 09 27 Section 3.2 (A1) Removed sludge factor requirement Section 3.2 (A2) Added A03800 grade and c
25、hanged sludge factor requirement from 1.80% Section 3.3 (A2) Eliminated requirement for ultimate tensile strength and changed elongation from 1.0% (machined) and 2.5% (cast) Section 4.2 Added typical hardness range and ultimate tensile strength Section 4.3 Added recycling code Section 3.2 Simplified this section Section 4.2 Corrected CLTE and TC values
