1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 1 2018 02 09 Editorial See Summary of Revisions A. Veskovic, NA 2016 03 30 Released K. Mueller, NA Controlled document at www.MATS Copyright 2018, Ford Global Technologies, LLC Page 1 of 7 UNSATURATED POLYESTER (UP), LOW DENSITY, CLASS A
2、, WSS-M3D188-B1 40% GLASS FIBER REINFORCED, SHEET MOLDING COMPOUND 1. SCOPE The material defined by this specification is 25 mm long glass fiber/bubble reinforced filled unsaturated polyester (UP) sheet molding compound. 2. APPLICATION This specification was released originally for material used for
3、 painted class A body components such as hoods or deck-lids to reduce weight. 2.1 Material is unlikely to contain UV stabilizers, therefore long term exposure to direct sunlight if left unpainted could cause chalking and loss of gloss. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires
4、 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 approved sources is located within Ford at or available externally through a Ford Materials Engine
5、er. 3.1.1 This specification is based on virgin material and does not allow the addition of recycled content (PIR/PCR). 3.1.2 Materials requiring high strain rate, creep or fiber oriented tensile modulus may be required to test to the requirements of WSS-M99D68-A1/Latest, Thermoplastic Property Dete
6、rmination For CAE, High Strain Rate Tensile, Creep and Tensile Modulus. Material suppliers should be prepared to submit data upon request. 3.1.3 Performance Criteria: Parts using this specification shall meet the appropriate performance specifications: Paint Performance: WSS-M2P180-D / Latest Adhesi
7、ve Performance: ESB-M11P27-A / Latest or WSB-M11P27-B / Latest SMC Closure Adhesive Bonding: ESDA53-1B322-AA SMC Closure Adhesive Bonding using Plasma Surface Preparation: ES-EU5A-1B327-AA Parts must fulfill applicable SDS/CDS requirements. 3.1.4 Unless otherwise agreed to by Ford Materials Engineer
8、ing, Control Plan and Certificate of Analysis (CoA) lot testing requirements must include, but are not limited to: Density Glass Fiber % Tensile Modulus Tensile Strength 3.1.5 Refer to Table 1 for the number of samples required for each test. ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyrigh
9、t 2018, Ford Global Technologies, LLC Page 2 of 7 3.1.6 Conditioning and test conditions All test values are based on material conditioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the material should occur in the co
10、nditioning environment or soon after removal. 3.2 MOLDED TEST SPECIMEN 3.2.1 Preparation of Test Specimens All test specimens shall be prepared from cross-ply molded plaques or equivalent. The plaques are to be manufactured from the same material and under equivalent conditions as production parts.
11、The plaques shall have the following dimensions: 300 x 300 mm, min x 2.5 +/- 0.2 mm Prepared specimens must show no evidence of fiber tear or loose strands protruding from the specimens. No additional annealing of specimens is allowed. 3.2.2 Density 1.15 1.36 g/cm3 (ISO 1183, Method A) 3.2.3 Determi
12、nation of Ash 3.2.3.1 Ash Content, by Weight 57 - 65% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) 3.2.3.2 Glass Fiber Content, by Weight 37 42% Test Method: ISO 3451/1, Method B, 1 h at 650 +/- 25 C, except after bake oven boil in 5% by volume hydrochloric acid solution for 15 min. Rinse the glass f
13、ibers several times with distilled water before drying in an oven for 2 h at 120 +/- 2 C. After cooling, weigh the crucibles and calculate the percent glass fibers. 3.2.3.3 Glass Fiber Length 25 mm min (Optical evaluation method) 3.2.4 Tensile Strength at Break 64 MPa min (ISO 527-4, 150 min x 10 x
14、2.5 +/- 0.2 mm specimen, 5 mm/min test speed) 3.2.5 Tensile Modulus at Break 7.4 GPa min (ISO 527-4, 150 min x 10 x 2.5 +/-0.2 mm specimen, 5 mm/min test speed) 3.2.6 Tensile Elongation 1.2% min (ISO 527-4, 150 min x 10 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) 3.2.7 Flexural Modulus 6.5 GPa m
15、in (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/ minute test speed) 3.2.8 Flexural Strength 144 MPa min (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/ minute test speed) ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyright 2018, Ford Global Tech
16、nologies, LLC Page 3 of 7 3.2.9 Impact Strength, Izod, notched (ISO 180, Method A, 63.5 x 12.7 x 2.5 +/- 0.2 mm specimen use center section of specimen, 10 specimens for each test) 3.2.9.1 At 23 C +/- 2 C 72 kJ/m2, min 3.2.9.2 At - 40 C +/- 1 C 73 kJ/m2, min The test specimen must be conditioned for
17、 minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 s. 3.2.10 Heat Deflection Temperature 275 C (ISO 75, 120 x 10 x 2.5 +/- 0.2 mm specimen use center sect
18、ion of specimen. At 1.82 MPa) 3.2.11 Water Absorption 0.7 % max no blisters Test Method: Include all processing steps, such as in-mold-coating, conductive primer, bakes, etc. that normally occurs just prior to shipping parts to the Ford Assembly Plant. If the bake conditions must deviate from those
19、below, please contact Materials Engineering. Panel size shall be approximately 30 x 30 cm. Testing shall be performed in triplicate. Dry panels for a minimum 2 hours at 75 +/- 2 C. Allow panels to cool for 1 hour at 23 +/- 2 C and 50 +/- 5 % relative humidity. Weigh panels to the nearest 0.1 g (Wi).
20、 Condition panels for 10 days at 95 +/-2 % relative humidity and 35 +/-1 C Blot away any excess water on the surfaces of the samples until no visually perceptible surface water remains. Allow panels to dry for 1 hour at 23 +/- 2 C and 50 +/- 5% relative humidity and re-weigh panels (Wf). Water absor
21、ption by weight (%) = (Wf - Wi) / Wi x 100 Temperature-shock panels for 32 minutes: See Figures 1 and 2. o Oven start temperature = 25 C o Place panels in IR oven, with both sides of panels exposed and thermocouple. Other heat sources may be used o Record temperatures of panels o Bake oven ramp rate
22、: o Max oven temp = 205C o Review panels for blisters ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyright 2018, Ford Global Technologies, LLC Page 4 of 7 Figure 1. Krelus Krelus AG medium wave (2.6 - 9.6 m), fast response (On 8s/Off 2s) oven. Oven consists of 12 x 2 kilowatt emitter banks (6
23、top, 6 bottom). o Figure 2. Time vs. Temperature 3.2.12 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 160 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.2.12.1 Tensile Strength at Break Change +/- 25% (Test Method
24、 per para 3.2.4) 3.2.12.2 Flexural Strength Change +/- 25% (Test Method per para 3.2.8) ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyright 2018, Ford Global Technologies, LLC Page 5 of 7 3.2.12.3 Impact Strength, Izod Change +/- 25% (Test Method per para 3.2.9.1, specimens to be notched befo
25、re heat aging) 3.3 FLAMMABILITY (ISO 3795) Burn Rate 100 mm/minute max The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.2 mm with a smooth surface. 3.4 SUPPLEMENTAL INFORMATION The following curves are to be submitted with the data packages: Engineering Stress/Strain at 23 C
26、 3.5 MATERIAL PROPERTIES REPORT ONLY 3.5.1 Coefficient of Linear Thermal Expansion Report Value, E-5 mm/mm/ C (ASTM D696, -30 C to 30 C) 3.5.2 Molding Shrinkage (ISO 2577, approximately 300 x 300 x 2.5 mm +/- 0.2 mm compression molded specimen) 3.5.2.1 After 48 h at 23 C +/- 2 C Report Value, % grow
27、th 3.5.2.2 After 48 h at 120 C +/- 2 C, 23 48 hr at 23 C +/- 2 C Report Value, % growth 3.5.3 Water Absorption 3.5.3.1 24 hr exposure, Report Value, % (ISO 62, 300 x 300 x 2.5 +/- 0.2 mm specimen) 3.5.3.2 10 day exposure, Report Value, % (ISO 62, 300 x 300 x 2.5 +/- 0.2 mm specimen) 3.5.4 Poissons R
28、atio Report Ratio (Test Method-ISO 527-1 Adhesive testing: ESB-M11P27-A or WSB-M11P27-B; Adhesive Bonding ES Specifications WSS-M2P180-D ESB-M11P27-A or WSB-M11P27-B ESDA53-1B322-AA and ES-EU5A-1B327-AA 3.2.2 Density* 1 3 3 1 3 3 3.2.3 Determination of Ash 3 1 3 1 1 1 3.2.3.1 Ash Content, by weight
29、3 1 3 1 1 1 3.2.3.2 Glass Fiber Content by Weight 3 1 3 1 1 1 3.2.3.3 Glass Fiber Length 3 1 3 1 1 1 3.2.4 Tensile Strength at Break* 3 5 15 1 5 5 3.2.5 Elongation at Break* 3 5 15 1 5 5 3.2.6 Tensile Modulus* 1 10 10 3.2.7 Flexural Modulus* 3 10 30 1 10 10 3.2.8 Flexural Strength* 3 10 30 1 10 10 3
30、.2.9 Impact Strength Notched Izod (per condition)* 3 10 30 1 10 10 3.2.10 Heat Deflection Temperature (per condition) 3 2 6 1 2 2 3.2.11 Water Absorption, Blister Test 3 3 9 1 3 3 3.2.12 Heat Aging Performance 3.2.12.1 Tensile Strength at Break, Change 1 5 5 3.2.12.2 Impact Strength, Notched Izod, C
31、hange 1 10 10 3.3 Flammability 1 5 5 3.4 Curves - Stress/Strain Curves 1 1 1 per test 3.5.1 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.5.2.1 Mold Shrinkage 1 5 5 1 5 5 3.5.2.2 Post Shrinkage 1 5 5 1 5 5 3.5.3.1 Water Absorption, 24 hr 1 3 3 3.5.3.2 Water Absorption, 10 day 1 3 3 3.4 Poissons Ratio 1 2 2 * For these requirements the 3 sigma value from the raw data is used to meet the requirements. 5. SUMMARY OF REVISIONS 2018 02 09 Editorial update. Corrected formatting so that section 3.2.12 no longer overlaps with Figure 2.
