1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 12 2017 06 27 Editorial Corrected footer A. Collins, NA 2016 10 17 Revised See Summary of Revisions S. Short, NA 1991 07 01 Released (A1/A2 1991 07 01) (A3 1992 07 01) (A4 2006 01 23) (A5 2007 01 19) (A6 2010 03 25) Controlled document a
2、t www.MATS Copyright 2017, Ford Global Technologies, LLC Page 1 of 7 SEALER, HEAT CURING, TAPE, SPOT WELDABLE, EXPANDING WSK-M4G325-A1 SEALER, HEAT CURING, PUMPABLE, SPOT WELDABLE, LOW EXPANDING WSK-M4G325-A2 SEALER, HEAT CURING, TAPE, SPOT WELDABLE, LOW EXPANDING, WSK-M4G325-A3 MEDIUM STRENGHT SEAL
3、ER, HEAT CURING, PUMPABLE, SPOT WELDABLE, HIGH EXPANDING WSS-M4G325-A4 SEALER, HEAT CURING, PUMPABLE, SPOT WELDABLE, MEDIUM EXPANDING WSK-M4G325-A5 SEALER, HEAT CURING, PUMPABLE, SPOT WELDABLE, LOW EXPANDING, WSS-M4G325-A6 LOW VISCOSITY 1. SCOPE The materials defined by these specifications are spot
4、 weldable, heat curing, heat expanding sealers. 2. APPLICATION WSK-M4G325-A1/A3: These specifications were released originally for dimensioned materials used for sealing spot weld joints on the body-in-white. It is applied to oiled surfaces in the form of self adhesive strips. WSK-M4G325-A2/A6: This
5、 specification was released originally for non-dimensioned materials used for sealing spot weld joints on the body-in-white. It is applied to oiled surfaces by an extrusion apparatus. WSK-M4G325-A4/A5: These specifications were released originally for non-dimensioned materials used for sealing joint
6、s in BIW. It is applied to oiled surfaces by an extrusion apparatus. The materials are applicable on oiled surfaces with acceptable oil film weights (European applications limit the oil/pre-lubricant film weight to max 3 g/m, see para. 3.7). Note: Care must be taken to ensure that the local oil film
7、 weight in the area of the adhesive/sealer application does not exceed the critical limit. Monitoring of the film thickness, adequate storage of the part and/or cleaning of the surface prior to sealer/adhesive application is necessary to avoid critical film thickness values, which would then cause m
8、alfunction of the sealer/adhesive. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file, or other documents. The list of
9、approved sources is located within Ford at or available externally through a Ford Materials Engineer. Material specification requirements are to be used for initial qualification of materials. ENGINEERING MATERIAL SPECIFICATION WSK-M4G325-A1/A2/A3/A5 WSS-M4G325-A4/A6 Copyright 2017, Ford Global Tec
10、hnologies, LLC Page 7 of 7 3.2 PERFORMANCE REQUIREMENTS A1/A3 A2/A4/A5/A6 3.2.1 Color Black Black 3.2.2 Solids, %, min 99 85 (FLTM BV 150-10) 3.2.3 Ash, %, max 50 45 (FLTM BV 150-10) 3.2.4 Flash Point N.A. 56 C (ASTM D56) 3.2.5 Density at 20 C 1.2 to 1.9 g/cm3 1.0 to 1.6 g/cm3 (ASTM D1475, tolerance
11、 +/- 0.05 g/cm3, based on the recorded density of suppliers original approved sample) 3.2.6 Penetration at 23 C (A1/A3 only) (ASTM D5, 0.981 N total weight force, 5 s dwell time) 3.2.6.1 As received 60 - 90 3.2.6.2 After aging 50 - 90 (14 days at 30 +/- 2 C) Note: See note in 3.2.7 3.2.7 Viscosity a
12、t 23 C, s (A2/A4/A5/A6 only) (FLTM BV 103-01, line pressure 0.392 MN/m2, nozzle dia. 2 mm) A2/A4 A5 A6 3.2.7.1 As Received 70 200 500 700 20 - 100 3.2.7.2 After Aging, max 200 700 100 (14 days at 35 +/- 2 C) Note: Final approval of a specific viscosity of material for production shipments shall be m
13、ade by affected Manufacturing Division. In all cases, however, the viscosity shall be within the limits specified above and shall meet all requirements of this specification (Control Sample Laboratory Report). A1/A3 A2/A4/A5/A6 3.2.8 Flow Rate, max No flow 3 mm (FLTM BV 153-01, Method A, except oile
14、d panels according to para. 3.4. ENGINEERING MATERIAL SPECIFICATION WSK-M4G325-A1/A2/A3/A5 WSS-M4G325-A4/A6 Copyright 2017, Ford Global Technologies, LLC Page 7 of 7 3.2.9 Cold Resistance after Aging No loss of adhesion, no chipping. Test Method: (a) Apply 250 x 30 x 3 mm ribbons of material under t
15、est to 300 x 100 mm test panels prepared according para 3.4. (b) Expose test assemblies according to FLTM BV 150-05, (for each individual region) for: . minimum curing cycle (165 C, 10 minutes material temp in EC oven) . maximum curing cycle (c) Expose test assemblies in a mechanically convected air
16、-dry oven at 80 +/- 2 C for two weeks. (d) After cooling to 23 +/- 2 C expose test assemblies and bending fixture (see FLTM BV 153-04, except 100 mm mandrel) in a cold box at -30 +/- 1 C for 4 h. (e) While still in the cold box, bend test assemblies within 2 s around the 100 mm mandrel through an an
17、gle of 90. 3.2.10 Wash-off Resistance (A2/A4/A5/A6 only) No wash-off of sealer, deformation of sealer surface permitted. Test Method: (a) Apply two ribbons of material under test 250 x 30 x 3 mm and 50 mm apart from each other to a 300 x 300 mm oiled panel, prepared in accordance para. 3.7. (b) Afte
18、r conditioning for 2 h at 23 +/- 2 C expose test assembly in horizontal position to a water jet of 50 +/- 5 C using a nozzle No. 1/2 GG-25 Full Jet and a pressure of 200 kN/m2. The distance between the nozzle and test material shall be 300 mm. The water jet shall be applied between the beads for 1 m
19、inute. 3.2.11 Wash and Phosphating Solution Resistance (A2/A4/A5/A6 only) A. Non-Cured Material No evidence of dissolution of material or lifting from panel. Test Method: (1) Apply 250 x 40 x 0.1 - 0.2 mm ribbons of material under test to 250 x 60 mm oiled test panels, prepared according to para. 3.
20、7. (2) After conditioning for 2 h at 23 +/- 2 C expose test assemblies one after another in each wash and phosphating solution of the affected plant where this material is to be used and maintain for 15 minutes at 60 +/- 1 C. ENGINEERING MATERIAL SPECIFICATION WSK-M4G325-A1/A2/A3/A5 WSS-M4G325-A4/A6
21、 Copyright 2017, Ford Global Technologies, LLC Page 7 of 7 B. Cured Material No loss of adhesion, no chipping Test Method: (1) Test specimens as prepared and tested under para 3.4.10 shall be exposed for 20 minutes in a mechanically convected air-dry oven at 100 +/- 2 C, and subsequently subjected t
22、o maximum curing cycle according to FLTM BV 150-05 (for each individual region). (2) After cooling to 23 +/- 2 C test according to FLTM BV 153-04, Method A, para 4 and 5, except -30 +/- 1 C. 3.2.12 Welding Acceptance Test (For A1/A3 use FLTM BV 159-02, for A2/A4/A5/A6 use FLTM BV 159-01) The sealer
23、shall be weldable immediately upon application and after 30 days storage at temperatures below 40 +/- 2 for C. 3.2.13 Flammability and Corrosion Self extinguishing (FLTM BV 159-02, Method A) within 5 s, no corrosion Immediately after welding, separate the welded parts using a test fixture according
24、to FLTM BV 159-01, Fig. 4. Examine after 48 h at 23 +/- 2 C. 3.2.14 Wetting (FLTM BV 153-08, Method A) The paint film (paint materials shall be noted in the Initial Sample Report of the adhesive, see also para 4.3) shall cover the sealer with a continuous film. Discoloration or staining permitted. 3
25、.2.15 Tensile Strength, (A2/A4/A5/A6 only) (FLTM BV 154-03, Method A, Type I, x = 3 mm, after 10 minutes at 23 +/- 2 C minimum and maximum heat curing cycle to FLTM BV 150-05, (for each individual region) test at 23 +/- 2 C) 3.4.15.1 Tensile Strength 10 N/cm2 min 3.4.15.2 After Heat Aging (500 h at
26、80 C, A4 only) max. deviation from original +/- 10% 3.2.16 Adhesion Strength After Curing (A1/A3 only) (FLTM BV 154-03, Method B and C, preparation of test panels according to Section I, 8 mm dia. test strips compressed to x = 3 mm, minimum and maximum heat curing cycle to FLTM BV 150-05, (for each
27、individual region) ENGINEERING MATERIAL SPECIFICATION WSK-M4G325-A1/A2/A3/A5 WSS-M4G325-A4/A6 Copyright 2017, Ford Global Technologies, LLC Page 7 of 7 A1 A3 3.2.16.1 Shear Strength, min 3 N/cm2 120 N/cm2 (Method B at 23 +/- 2 C) 3.2.16.2 Peel Strength, min 10 N/cm 30 N/cm (Method C at 23 +/- 2 C) 3
28、.2.17 Resistance to Corrosion No Corrosion, Blisters or loss of Adhesion The material shall protect the test panel from corrosion. Test Method: (a) Test panel preparation according to FLTM BV 159-02, Method A. (b) After 2 h at 23 +/- 2 C wash, phosphate and electrocoat test assemblies under normal p
29、roduction conditions. (c) Expose test assemblies according to FLTM BV 150-05, (for each individual region): . min curing cycle . max curing cycle (d) Expose test assembly to Ford 00.00-L-467 for 6 weeks. (e) Separate welded assemblies using a test fixture according to FLTM BV 159-01, Fig. 4 and exam
30、ine. 3.2.18 Water Absorption, A1/A2/A3/A6 A4 A5 3.2.18.1 (FLTM BV 153-07) max 1% 3% 2% Curing conditions acc. To FLTM BV 150-05 (for each individual region) 3.2.18.2 After Heat Aging (500 h at 80 C, A4/A5 only) max. deviation from original +/- 10 % After heat aging the foam must meet the requirement
31、s of paragraph 3.4.20. A1 A2/A6 A3 A4 A5 3.2.19 Volume Expansion, % 25 65 25 55 5 25% 300 400 100 - 200 (FLTM BV 108-02) For Information only: Show tables and curves “Time over Volume expansion at different Temperatures (e. g. 110 C to 140 C)”. This has to be mentioned in the PSW ENGINEERING MATERIA
32、L SPECIFICATION WSK-M4G325-A1/A2/A3/A5 WSS-M4G325-A4/A6 Copyright 2017, Ford Global Technologies, LLC Page 7 of 7 3.2.20 Structure of Curing The sealer shall form a closed skin after heat curing. The inner cell structure shall be fine without large voids. Test Method: (a) Preparation of test assembl
33、ies according to FLTM BV 153-07, paragraph 1 to 3. (b) After cooling to 23 +/- 2 C test specimens are cut through and examined visually. 3.3 QUALITY The adhesive shall be a smooth, homogeneous mixture, free from foreign materials. The material must be adaptable for application in accordance with the
34、 appropriate Ford Motor Company Process Specification and must be compatible with all related materials. 3.4 OIL COMPATIBILITY revised para 1, 2 and all paras which are related to A3, revised 3.4.16, 3.4.18, 3.4.19 2008 11 19 Changed A3 specification from pumpable into tape version 2007 08 27 Correc
35、ted specification number for A5, WSS to WSK. 2007 03 09 Revised 2, 3.4.8, 3.4.9, 3.4.10, 3.4.11, 3.4.14, 3.4.18.1; Inserted 3.6, 3.7, 3.7.1, 3.7.1.1, 3.7.1.2, 3.7.1.3, 3.8, 5.1, 5.2, 5.3; Deleted 3.5 2007 01 19 Added A5, Revised tile for A2 and A3 and paragraph 3. 2006 01 23 Added A4. Add 3.4.21 Cor
36、rosion Resistance, Proving Ground (European Production), inserted 3.0, deleted 3.1, 3.2, 3.3, 3.6, 3.7, 4, revised 3.4.1, 3.4.8, .4.9, 3.4.10, 3.4.11, 3.4.17.7, 3.4.19. Revised 3.4.18. Water Absorption from 8% to 1%.added 3.4.15.1,3.4.15.2, 3.4.18.1, 3.4.18.2, and 3.4.21. 1993 08 02 Revised 1, 3.4.4 to 3.4.7, 3.4.11, added 3.5 1992 07 01 Released A3, updated 2 and 4. Revised A1 and A2.
