1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2013 04 18 N-Status No replacement named A. Reaume, NA 2010 01 06 Revised A6 - Changes made to 3.4 and 3.9 A. Reaume, NA 1991 11 05 NEO1E101 Released E. J. Duda Controlled document at www.MATS Copyright 2013 Ford Global Technologies, LLC Page
2、 1 of 7 SEALANT, SILICONE RUBBER, ACETOXY CURED, N-STATUS WSE-M4G323-A1 LOW VISCOSITY SEALANT, SILICONE RUBBER, ACETOXY CURED, N-STATUS WSE-M4G323-A2 MEDIUM VISCOSITY SEALANT, SILICONE RUBBER, ACETOXY CURED, N-STATUS WSE-M4G323-A3 HIGH VISCOSITY SEALANT, SILICONE RUBBER, OXIME CURED, N-STATUS WSE-M4
3、G323-A5 HIGH VISCOSITY SEALANT, SILICONE RUBBER, OXIME CURED, N-STATUS WSS-M4G323-A7 VERY HIGH VISCOSITY NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is an one component thixotropic spreadable silicone rubber based adhesive/sealant. It is capable of being pumpe
4、d, metered and distributed into a gasket profile. These materials are ready for use as received, requiring no catalyst or heat cure. 2. APPLICATION These specifications were released originally for materials used for formed-in-place gaskets such as engine oil pan, rocker cover, cylinder block or oil
5、 pump, where high operating temperatures (up to 204 C) may be encountered. WSE-M4G323- A1 Low viscosity, low modulus acetoxy cured material with medium assembly time and very good adhesion and joint movement on clean and oiled panels of steel to aluminum and aluminum to aluminum. A2 Medium viscosity
6、, medium modulus acetoxy cured material with good blowout resistance, medium assembly time, good oil and coolant resistance. A3 High viscosity, high modulus acetoxy cured material with excellent blowout resistance, short assembly time, good high temperature resistance with excellent adhesion and joi
7、nt movement on clean and oiled aluminum to aluminum. A5 Very high viscosity, low modulus oxime cured material with very good blowout resistance and long assembly time, good oil resistance and excellent joint movement on clean and oiled steel to aluminum and aluminum to aluminum panels. This material
8、 has very poor resistance to coolant/water and must not be used for these applications. WSS-M4G323- A7 Very high viscosity, medium modulus, oxime cured material with excellent blowout resistance and very long assembly time, good oil resistance and excellent adhesion and joint movement on oiled steel
9、 and aluminum panels. This material has very poor resistance to coolant/water ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A1,A2,A3,A5 WSS-M4G323-A7 Copyright 2013, Ford Global Technologies, LLC Page 2 of 7 and must not be used for these applications. 3. REQUIREMENTS Material specification requirem
10、ents are to be used for initial qualification of materials. 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). 3.4 SPECIFIC GRAVITY (ASTM D 792, Method A) A1 A2 A3 A5 A
11、7 1.04- 1.06- 1.06- 1.28- 1.30- 1.09 1.10 1.10 1.35 1.37 3.5 EXTRUSION RATE, s A1 A2 A3 A5 A7 40- 200- 320- 700- 1400- 150 390 900 1700 2600 Test Method: Time to dispense 50 cc through a stainless steel nozzle with a 3.2 +/- 0.13 mm orifice and 50 +/- 0.13 mm in length at 448 kPa pressure using a #2
12、50 Semco gun and 170 g PE cartridge assembly. Start the test by dispensing 10 g and then timing the next 50 cc. To convert from g to cc, multiply by specific gravity. 3.6 BLOW RESISTANCE, s, min (FLTM BV 126-01, 14 kPa pressure, cured for 30 minutes at 23 +/- 2 C, 50% R.H., 1 mm and 1.5 mm gap, 4.0
13、mm flange) Gap, 1 mm A1 A2 A3 A5 A7 15 120 300 100 110 Gap, 1.5 mm 10 20 300 60 110 Take 60 s to assemble and test 30 minutes after assembly. 3.7 CURE RATE (Assembly Time), minutes, range (FLTM BV 127-02 or FLTM BV 125-01, max time at which both surfaces have a continuous strip of sealant at 50 +/-
14、5% relative humidity and 23 +/- 2 C) A1 A2 A3 A5 A7 5 18 5 10 2 14 5 20 120 300 3.8 TOTAL SILICONE VOLATILES, max (FLTM AV 102-01, cured 24 h at 23 +/- 2 C and 50 +/- 5% R.H.) ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A1,A2,A3,A5 WSS-M4G323-A7 Copyright 2013, Ford Global Technologies, LLC Page 3
15、 of 7 0.6 0.6 0.6 0.6 0.6 3.9 CURED PROPERTIES Properties determined after curing the sealant for 168 +/- 2 h at 23 +/- 2 C and 50 +/- 5% relative humidity on a 2.0 mm cross section. Original Tensile Strength, MPa, min (ASTM D 412, Die C) 2.0 2.6 2.5 1.2 1.8 Elongation, %, min 300 300 210 350 450 Mo
16、dulus, 100%, range 0.5- 0.9- 1.1- 0.4- 0.5 1.2 1.6 1.7 1.1 min. Durometer Hardness, range (ASTM D 2240, Shore A, instantaneous) 26 38 38 48 44 56 27 40 35 48 3.10 OIL IMMERSION (ASTM D 471, 168 h at 150 +/- 2 C, IRM 902 oil, after cure per para 3.9) Tensile Strength Change, %, max - 24 - 15 - 25 - 3
17、5 - 28 Elongation Change, %, max - 22 - 18 - 20 - 10 - 30 Durometer Change, max - 10 -14 - 12 - 10 - 14 Volume Change, %, max + 12 + 14 + 13 - 13 + 14 + 12 + 20 3.11 HIGH TEMPERATURE RESISTANCE (ASTM D 573, 168 h at 175 +/- 2 C, after proper cure per para 3.9) Tensile Strength Change, %, max A1 A2 A
18、3 A5 A7 ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A1,A2,A3,A5 WSS-M4G323-A7 Copyright 2013, Ford Global Technologies, LLC Page 4 of 7 - 20 - 8 - 8 - 10 + 100 Elongation Change, %, max - 25 - 35 - 10 - 15 - 50 Durometer Change, max +/- 10 +/- 8 +/- 10 - 5 to + 30 + 10 3.12 IMMERSION IN THREE CURR
19、ENTLY APPROVED TRANSMISSION FLUIDS OF AFFECTED MODEL YEAR (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C, see para 5.1) 3.12.1 Hardness Change, points, max - 30 3.12.2 Tensile Strength Change, %, max - 35 3.12.3 Elongation Change, %, max + 50 3.12.4 Volume Change, %, max + 45 3.12.5 Visual Evaluation No
20、 surface tackiness or cracks when folded flat against itself. 3.13 LAP SHEAR ADHESION let flash for 15 minutes. 2024 Alclad Aluminum to 1010 Steel . Adhesion, MPa, min 0.5 0.4 0.3 0.3 1.0 . Joint Movement, mm, min 2.0 2.0 1.0 3.0 6.0 2024 Alclad Aluminum to Aluminum . Adhesion, MPa, min 0.7 0.4 0.6
21、0.9 1.2 . Joint Movement, mm, min 3.0 3.0 2.5 3.0 6.0 ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A1,A2,A3,A5 WSS-M4G323-A7 Copyright 2013, Ford Global Technologies, LLC Page 6 of 7 3.13.2 Immersion in IRM 902 (168 h at 150 +/- 2 C) CLEAN PANELS 2024 Alclad Aluminum to 1010 Steel . Adhesion, MPa,
22、min A1 A2 A3 A5 A7 0.8 0.4 0.5 0.3 1.4 . Joint Movement, mm, min 3.0 3.0 3.0 3.0 4.5 2024 Alclad Aluminum to Aluminum . Adhesion, MPa, min 0.8 0.7 1.2 0.4 1.4 . Joint Movement, mm, min 4.0 4.0 3.0 3.0 4.5 OILED PANELS: Dip panels in a solution of 5% ASTM 902 oil in toluene; let flash for 15 minutes.
23、 2024 Alclad Aluminum to 1010 Steel . Adhesion, MPa, min 0.5 0.2 0.3 0.3 0.9 . Joint Movement, mm, min 2.5 2.5 1.0 3.0 4.5 2024 Alclad Aluminum to Aluminum . Adhesion, MPa, min 1.0 0.7 1.0 0.3 0.7 . Joint Movement, mm, min 3.0 4.5 3.0 3.0 4.8 ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A1,A2,A3,A5
24、 WSS-M4G323-A7 Copyright 2013, Ford Global Technologies, LLC Page 7 of 7 3.14 STORAGE STABILITY, min 12 months (From date of receipt at Ford Motor Company) When stored in sealed unopened containers out of direct sunlight at ambient temperatures between 10 and 27 C. The supplier must label each conta
25、iner to indicate expiration date of the material and production usage beyond expiration date is not permitted. Containers should always be kept sealed when not in use. After opening, a plug of cured material may form across the container opening during storage. This may easily be removed and does no
26、t affect the remaining contents. 3.15 QUALITY The material shall be of uniform quality, free from foreign materials and properties detrimental to normal production use. 3.16 NON-INTERCHANGEABILITY OF MATERIALS Only approved materials all from the same production source shall be used in conjunction w
27、ith one another. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 For information on currently approved service fluids and other material required for use in these specifications contact: Material
28、s Laboratory GB-15/GM-D01-D Transmission & Axle Engineering Car Engineering Materials & Fasteners Engineering Ford Motor Co. Ltd Ford Motor Company Research & Engineering Center 36200 Plymouth Road Laindon, Basildon Box DME-14 Essex SS15 6EE, England Livonia, MI 48151, U.S.A. Product Engineering Office Ford Motor Co. of Australia Princes Highway, Norlane Victoria 3214, Australia
