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    FORD WSD-M2A143-A2-2014 ALUMINUM ALLOY CASTING HEAT TREATED CONDITION TO BE USED WITH FORD WSS-M99P1111-A (Shown on FORD WSD-M2A143-A1).pdf

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    FORD WSD-M2A143-A2-2014 ALUMINUM ALLOY CASTING HEAT TREATED CONDITION TO BE USED WITH FORD WSS-M99P1111-A (Shown on FORD WSD-M2A143-A1).pdf

    1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 04 2014 02 12 N Status A1 no replacement, A2 replaced by WSS-M2A178-A2 G. Weber, NA 2012 09 05 Revised Para 3.4.3, to align F/DxD with ASTM E10, ISO6506 R. Davis, FOE 1989 02 06 SM/ER3162TC Released W. Janssen; W. Jones, EAO Controlled do

    2、cument at www.MATS Copyright 2014, Ford Global Technologies, Inc. Page 1 of 3 ALUMINUM ALLOY, CASTING, AS CAST CONDITION WSD-M2A143-A1 ALUMINUM ALLOY, CASTING, HEAT TREATED CONDITION WSD-M2A143-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is an aluminum - si

    3、licon - copper casting alloy in the as cast or as cast and heat treated condition. 2. APPLICATION These specifications were released originally for material used in the manufacture of engine cylinder heads by the permanent mold casting process. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTIO

    4、N MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION, (Weight%) A1 A2 Silicon 7.50 - 9.50 6.00 - 8.50 Copper 2.20 - 3.80 2.80 - 4.00 Magnesium 0.05 - 0.50 0.05 - 0.50 Manganese 0.6 max

    5、 0.6 max Nickel 0.3 max 0.3 max Iron 0.7 max 0.7 max Titanium 0.25 max 0.25 max Zinc 1.0 max 0.8 max Lead 0.15 max 0.15 max Tin 0.10 max 0.10 max Each Other Element 0.05 max 0.05 max Total Other Elements 0.50 max 0.50 max Aluminum Remainder Remainder Eutectic modification shall be achieved with sodi

    6、um or strontium. The composition shall be selected from within the above range in order to meet castability, soundness, machinability consistency, micro-structural and strength requirements. The specific composition limits and foundry practice to meet performance and manufacturing requirements will

    7、form part of the Control Plan for each individual component geometries and supplier. ENGINEERING MATERIAL SPECIFICATION WSD-M2A143-A1/A2 Copyright 2014, Ford Global Technologies, Inc. Page 2 of 3 3.3 QUALITY 3.3.1 General The finished cylinder head must be free from laps, cold shuts, dross, sludge a

    8、nd eutectic segregation/depletion. Gas holes/porosity and shrinkage porosity assessment levels, visual and/or radiographic (ASTM E 155) methods, shall be subject of the control plan. 3.3.2 Microstructure The microstructure shall consist of primary alpha aluminum, alpha aluminum-silicon eutectic and

    9、inter-metallic constituents. The silicon component of the eutectic shall be rounded which indicates modification. 3.4 MECHNICAL PROPERTIES Tensile and compression test samples shall be separately poured at the same time and from the same metal as the castings they represent, or alternatively and whe

    10、n specified on the engineering drawing, machined from the component casting in the designated location. The mechanical properties shall be determined, for A1, not less than 168 hours after casting, and for A2, after heat treatment to the same condition as that of the corresponding finished component

    11、. 3.4.1 Tensile Properties (ASTM B 557/ISO 6892), min A1 A2 (see 3.5) Tensile Strength 180 MPa 220 MPa 0.2% Proof Stress 135 MPa 190 MPa Elongation 3% 1% 3.4.2 Compressive Properties (ASTM E 9), min A1 A2 (see 3.5) Compressive Yield Strength - 190 MPa (2% offset) 3.4.3 Hardness Brinell (ASTM E 10/IS

    12、O 6506, F/DxD = 10) Hardness shall be determined on the casting at the location shown on engineering drawing. A1 A2 (see 3.5) Hardness Brinell 70 - 110 80 - 120 Note: The frequency and detail of mechanical testing will form part of the agreed Control Plan. 3.5 HEAT TREATMENT A2 CONDITION Components

    13、will be subjected to heat treatment to achieve the required mechanical properties. The thermal treatment may include a solution heat treatment, generally at 450 C to 510 C for 2 to 12 hours, followed by an artificial ageing treatment, generally at 225 C to 255 C for 2 to 4 hours. When heat treatment

    14、 is required, treatment parameters shall form part of the Control Plan for the individual component. ENGINEERING MATERIAL SPECIFICATION WSD-M2A143-A1/A2 Copyright 2014, Ford Global Technologies, Inc. Page 3 of 3 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.


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