1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2014 12 17 Revised Removed A3 L. Sinclair, NA 2004 02 20 Revised Para 3.16.2.5, 3.24, 3.24.1, 3.24.2 inserted; para 3.16.2.2 deleted; para 3.22 revised J. Crist/W. Janitschke 1995 01 15 NB00E10361355001 Released D. DiGregorio, E. Rezendes Cop
2、yright 2014, Ford Global Technologies, LLC Page 1 of 7 TAPE ADHESIVE, EPOXY BASED, STRUCTURAL, LOW-EXPANDING, WSB-M2G383-A1 HIGH TEMPERATURE HEAT CURING, WELDABLE, FLOW WASH RESISTANT TAPE ADHESIVE, EPOXY BASED, STRUCTURAL, MEDIUM-EXPANDING WSB-M2G383-A2 HIGH TEMPERATURE HEAT CURING, WELDABLE, FLOW
3、WASH RESISTANT 1. SCOPE WSB-M2G383-A1: The material defined by this specification is an epoxy resin base, high temperature heat curing, 0 - 15% expanding, structural weldable tape adhesive. WSB-M2G383-A2: The material defined by this specification is an epoxy resin base, high temperature heat curing
4、, 30 - 75 expanding, structural weldable tape adhesive. 2. APPLICATION These specifications were released originally for material used at high temperature curing schedules (minimum metal temperatures of 10 minutes at 170 C) for bonding metal-to-metal body structures on body in white. Optimal adhesio
5、n strengths are achieved at 0.8 mm adhesive bondline thicknesses. 3. REQUIREMENTS 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 DIMENSIONS Cross sections/dimen
6、sions as specified on the Engineering Drawing. 3.5 SOLIDS, min 98% (ASTM D 2834, except heat at 100 +/- 2 C for 3 h in a mechanical convection oven) ENGINEERING MATERIAL SPECIFICATION WSB-M2G383-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 2 of 7 3.6 ASH, max (ISO 3541, Method A, 760 +/-
7、 30 C, based on solids weight) Ash content for any one supplier shall be +/- 3% based on the recorded ash of their original approved production sample. Refer to para 5.5 for additional information. 3.7 WEIGHT PER VOLUME (ASTM D 816) The weight tolerance for any one supplier shall be +/- 0.01 kg/L, b
8、ased on the recorded weight of their original approved production sample. Refer to para 5.4 for additional information. 3.8 FLASH POINT, min 205 C (ASTM D 1310, tag open cup) 3.9 CONE PENETRATION at 25 C (ASTM D 217, 150 g total weight) Initial and after material is aged 72 h at 45 +/- 2 C. The core
9、 penetration tolerance for any one supplier shall be +/- 2 mm based on the recorded cone penetration of their original approved production sample. Refer to para 5.10 for additional information. 3.10 WASH RESISTANCE No evidence of (FLTM BV 116-01, Method B) material wash off or displacement 3.11 WELD
10、 ACCEPTANCE Must pass (FLTM BV 109-01, Shunt Method) 3.12 WELD FLAMMABILITY TEST (FLTM BV 114-01) Less than 5% of the welds shall exhibit flame and shall be self-extinguishable within 30 seconds. 3.13 ELECTROCOAT COMPATIBILITY Shall not contaminate (FLTM BV 119-01, use current electrocoat primer bat
11、h production paints as identified or cause film irregularities by the Materials Engineering Activity) ENGINEERING MATERIAL SPECIFICATION WSB-M2G383-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 3 of 7 3.14 VOLUME EXPANSION A1: 5 - 15% (FLTM BV 108-02) A2: 30 - 75% A3: 100% 3.15 ADHESION,
12、COLD IMPACT No cracking or adhesion failure Test Method: Apply a ribbon of sealant material 0.8 x 12.7 x 200 mm to two 0.9 x 300 x 300 mm oily steel panels. Bake one panel to each cure schedule per para 5.3. Position panels in a horizontal attitude during material bake. After bake, condition panels
13、at 23 +/- 2 C for 1 h minimum. Condition the panels in a mechanical convection oven at 70 +/- 2 C for 7 days. Condition the panels at 23 +/-0 2 C for 1 h. Place panels in the slamming apparatus (FLTM BV 101-02) at - 30 +/- 1 C. Each panel shall be slammed a total of 10 times. 3.16 SHEAR ADHESION A3
14、only: 2.5 MPa (SAE J1523, material bondline thickness 0.8 mm, 325 mm2 bond area, material cure per para 5.3, substrates per para 5.2, jaw speed 13 mm/minute) 3.16.1 Normal Condition for 30 minutes at specified temperature prior to test. A1 A2 Test at 23 +/- 2 C, MPa 10 7 Test at 80 +/- 2 C, MPa 6 5
15、Test at - 30 +/- 1 C, MPa 13 8 3.16.2 Aged, MPa 6 5 Condition for 24 h at 23 +/- 2 C after exposure, then test at 23 +/- 2 C. 3.16.2.1 Two weeks heat age at 90 +/- 2 C 3.16.2.3 Two weeks humidity age at 38 +/- 1 C and 98 +/- 2% relative humidity 3.16.2.4 Thermal Cycle - 5 cycles . 4 h at 90 +/- 2 C
16、. 4 h at 38 +/- 1 C and 98 +/- 2% relative humidity . 16 h at - 30 +/- 1 C ENGINEERING MATERIAL SPECIFICATION WSB-M2G383-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 4 of 7 3.16.2.5 30 Cycles APGE (FLTM BI 123-01, modified cycle) One APGE cycle: 15 min salt water immersion (5% salt solut
17、ion), plus 1 h and 45 min drip dry at RT 22 h at 50 +/- 2 C and 90 +/- 5% RH Samples are to remain in the 50 +/- 2C and 90% +/- 5% environment over the weekends and holidays. 3.17 PEEL RESISTANCE (T-Peel), min 1500 N/m (ASTM D 1876, material cure per para 5.3, substrates per para 5.2) 3.18 WATER TIG
18、HTNESS No water leaks after 1 h Test Method: Use two 75 x 150 mm CRS steel panels. Form one of the panels into the configuration shown in figure 1. Place a 12 x 150 x 1.5 mm strip of material on the 15 mm area of the formed panel. Weld this panel to the flat panel placing one weld at each end (12 mm
19、 from the edge). Immerse the entire fixture into a 50 C constant temperature water bath for 20 minutes. Remove from bath and bake at material cure schedules per para 5.3. The fixture should remain in an upright position (i.e. funnel end up) during the baking process. After bake, condition at 23 +/-
20、1 C for 1 h. Seal each end of the funnel end of the fixture to form a trough. Place fixture in a vise grip, trough side up. Fill the trough with water at 23 +/- 1 C. Aim a 5 mm diameter air nozzle set at 0.2 MPa line pressure into bottom of fixture and make lengthwise passes along bondline for 30 se
21、conds. Hold air nozzle approximately 25 mm from bottom of fixture. No air should pass through adhesive material. Allow fixture to sit for 1 h at 23 +/- 1 C while watching for water leaks at bottom of fixture. 3.19 COLD FLOW SETTLING, max (A3 only) 9 mm Prepare a slab of material 25 mm thick and 75 m
22、m wide. Place it centrally over a 50 mm diameter hole cut in a 0.8 mm thick suspended metal plate and heat for 48 h at 40 +/- 2 C. 3.20 STORAGE STABILITY Material shall be stored below 38 C, away from all sources of heat and sunlight. Under these storage conditions, the minimum shelf life of the mat
23、erial shall be 3 months. The material shall not block, harden or become tacky and must be capable of achieving minimum baked properties as required by this specification. When these materials are stored at temperatures below 23 C, they shall be conditioned at room temperature prior to application. A
24、dequate conditioning permits the material to retain its optimum application properties. ENGINEERING MATERIAL SPECIFICATION WSB-M2G383-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 5 of 7 3.21 HANDLING May be minimally tacky but must be handleable without leaving residue on the gloves of t
25、he operators. 3.22 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 60 Formation of clear film, droplets or crystals is cause for rejection. 3.23 FUNCTIONAL APPROVAL Materials being evaluated for approval to this specification shall b
26、e subjected to a production trial. Functional trial results must be approved by the affected assembly operation and Design Engineering. Results shall be made available to Materials Engineering prior to material approval and release. 3.24 CORROSION RESISTANCE (European Production only) 3.24.1 Resista
27、nce to Corrosion No evidence (FLTM BV 153-11, Method A, of corrosion addition to para 3, expose specimens subsequently for 20 minutes at 220 +/- 2 C metal temperature) Coating Thickness 0.3 mm 3.24.2 Corrosion Resistance, Proving Ground New material technologies require LPG/APG approval prior to the
28、ir introduction. Test details including film thickness, method of application, number of test cycles, etc. for the individual cars are defined by Materials Engineering, PV&T. 5. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of thes
29、e specifications. 5.1 MECHANICAL CONVECTION OVEN The mechanical convection oven(s) used to cure the material shall be capable of achieving 205 C metal temperature on body steel (0.9 mm thickness) within 8 - 10 minutes. 5.2 SUBSTRATES 5.2.1 CRCL Steel meeting WSB-M1A250-A1: Nominal 0.8 mm thickness,
30、surface precoated with a 0.013 mm wet film of stamping lubricant as specified by the responsible Materials Engineering Activity at Metal Stamping Operations. ENGINEERING MATERIAL SPECIFICATION WSB-M2G383-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 6 of 7 5.2.2 Galvanized steel meeting W
31、SB-M1A250-C3-60G60G-EL: Nominal 0.8 mm thickness, surface precoated with a 0.013 mm wet film of stamping lubricant as specified by the responsible Materials Engineering Activity. 5.3 MATERIAL BAKE SCHEDULES 5.3.1 Minimum: 170 C for 10 minutes metal temperature (20 minutes oven time, min) 5.3.2 Maxim
32、um: 205 C for 30 minutes metal temperature (40 minutes oven time, min) 5.4 WEIGHT PER VOLUME 1.4 +/- 0.1 kg/L (ASTM D 816) 5.5 ASH, max 84% (ISO 3541, Method A, 760 +/- 30 C, based on solids weight) 5.6 IMPACT RESISTANCE, min (A1 & A2) A1: 5 N.m, A2: 2 N.m As specified by Body Materials Engineering
33、Activity. Material bondline thickness 0.8 mm, 325 mm2 bond area, material cure schedule per para 5.2. Condition for 30 minutes at specified temperature prior to test. Normal 23 +/- 2 C Two weeks heat age at 90 +/- 2 C Two weeks humidity age at 38 +/- 1 C and 98 +/- 2% relative humidity 500 h Salt Sp
34、ray (ASTM B 117) Thermal Cycle - 5 cycles . 4 h at 90 +/- 2 C . 4 h at 38 +/- 1 C and 98 +/- 2% relative humidity . 16 h at - 30 +/- 1 C 5.7 TENSILE STRENGTH, typical 13 MPa (ASTM D 638M, material cure per para 5.3) 5.8 ELONGATION, typical 3% (ASTM D 638M, material cure per para 5.3) 5.9 MODULUS OF ELASTICITY, typical 480 MPa (ASTM D 638M, material cure per para 5.3) 5.10 CONE PENETRATION at 25 C 8 - 17 mm (ASTM D 217, 150 g total weight) ENGINEERING MATERIAL SPECIFICATION WSB-M2G383-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 7 of 7
