1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 07 28 Revised Title, 2., 3.1.2, 3.3.6.1, 3.3.8, 3.3.8.1, 3.3.8.2, Figure 1, 3.6, .3.7; Added 3.3.8.1.1, 3.3.8.1.2, 3.3.8.2.1, 4.4, 4.5, 4.5.1, 4.5.2 150 x 10 x 4 mm specimen A). Test speed shall be 50 mm/minute. Provide a curve of tensile
2、 stress versus strain using one specimen per lot at each of the following temperatures: -40 C, 23 C and 85 C (Page 8). For ductile materials, the curve shall cover strain through yield point. (s) 3.3.6 Impact Strength, Izod, notched, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center sect
3、ion of specimen A, 10 specimens for each test) 3.3.6.1 At 23 +/- 2 C 32 kJ/m2, 100% Partial Break 3.3.6.2 At 10 +/- 2 C 100% Partial Break 3.3.6.3 At 0 +/- 2C 13 kJ/m23.3.6.4 At -40 +/- 2C 3 kJ/m2The test specimens must be conditioned for a minimum of 6 h at the above specified temperature prior to
4、impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D952-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 7 (s) 3.3.7 Flexur
5、al Modulus, min 800 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, use center section of specimen A, 2 mm/min test speed, 64 mm support span) 3.3.8 Impact Strength, Multiaxial, Painted and Unpainted Specimens (ASTM D 3763, 100 x 100 x 3.2 +/- 0.2 mm thick smooth surface injection molded specimen,
6、test a minimum of 10 specimens from 3 individual lots at each condition; 2.2 m/s impact velocity; to be tested using production paint systems. For North America: painted primer ESB-M6J142-A PPG MPP6000; Basecoat/Clearcoat ESB-M2J218-A1/2 1K/1K PPG Oxford White CBCF6466, PPG Clearcoat CUCC1000XA) Tes
7、t specimens must be conditioned for minimum of 6 h at test temperature prior to impact testing. Low temperature conditioning and testing shall be conducted within the same environmental chamber as the clamp mechanism of the impact device. Painted test specimens must be oriented with paint in tension
8、 (paint side down). Summarize testing at each condition by providing the following information as well as the information in Figure 1. a. Detailed description of specimen preparation b. Molding conditions: melt and mold surface temperatures, and average injection velocity c. Number of samples tested
9、 per lot per temperature d. Numbers of lots tested e. Number of samples with ductile failure per each test condition f. Representative force vs. deflection curve for each impact event Test results shall be submitted with an initial qualification of the material with curves (data on CD as well as pap
10、er copies) and test samples. A ductile failure is defined as a crack that does not radiate more than 10 mm from the center of the impact point. 3.3.8.1 Painted Specimens (Test Method per para 3.3.8) 3.3.8.1.1 Energy at Maximum Load, min (At 0 +/- 2 C) 13.0 J % Ductile, min (At 0 +/- 2 C) 90% 3.3.8.1
11、.2 Energy at Maximum Load, min (At -10 +/- 2C) 11.0 J % Ductile, min (At -10 +/- 2C) 40% 3.3.8.2 Unpainted Specimens (Test Method per para 3.3.8) 3.3.8.2.1 % Ductile, min 100% (At -40 +/- 2 C) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D952-A2 Printed copies are uncontrolled Copyright 2006, Ford Global
12、 Technologies, LLC Page 4 of 7 (s) 3.3.9 Heat Deflection Temperature, min 45 C (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.3.10 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h
13、at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.3.10.1 Tensile Strength at Yield, Change +/- 10% (Test Method per para 3.3.4) 3.3.10.2 Impact Strength, Izod, Change +/- 15% (Test Method per para 3.3.6, specimens to be notched before heat
14、 aging) 3.4 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm (use specimen C) with a smooth surface. Operator Name Sample ID Test no Date/time Lot ID Temperature ( C ) Impact velocity (m/s) Impact energy (J)T
15、ime to max load (ms)Total time (ms)Maximum load (kN)Energy to max load (J)Total energy (J)Deflection at max load (mm) # of CracksCrack length, max. (mm)Failure type (Ductile / Brittle) 1 2 3 4 5 6 7 8 9 10 Average Median Minimum Maximum Coef. of Var. Std. Dev. Figure 1 - Data SummaryENGINEERING MATE
16、RIAL SPECIFICATIONWSS-M4D952-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 7 3.5 PAINTABILITY Painted substrate must comply with all the requirements of paint performance WSS-M2P181-B. Production level materials must be used in preparing test parts/panels
17、. Improper sample prep can influence test results. 3.6 SCRATCH RESISTANCE, MOLD-IN-COLOR ONLY Rating 2 required at 2.0 N (FLTM BN 108-13, 1.0 +/- 0.1 mm (No visible whitening at steel ball at 7.0 N, 6.0 N, 4.5 N, 3.0 N and 2.0 N) any load) 3.7 WEATHERING RESISTANCE, MOLD-IN-COLOR ONLY After exposure
18、 in accordance with 3.7.1, 3.7.2, and 3.7.3, the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed provid
19、ed an acceptable appearance can be achieved as specified below by washing with mild detergents and water (ratio 5:95 by volume) or equivalent after the outdoor exposure only. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida and Arizona exposure results f
20、or final approval. 3.7.1 Xenon Arc Weatherometer Rating 4-5 (SAE J1960 modified Type “S“ with at least borosilicate inner and outer filters, 75% gloss 0.55 W/m2radiant exposure retention 3000 h exposure, specimen size: 60 x 60 x 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specim
21、en B) 3.7.2 12 months Florida Rating 4 - 5 12 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen B) 3.7.3 24 months Florida Rating 4 24 months Arizona (SAE J1976, 5 south, direct weat
22、hering inland, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen B) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D952-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 6 of 7 4. GENERAL INFORMATION The information
23、 given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ISO 11359-2 TMA, temperature range -30 to 100 C) Flow Direction, E-5 mm/mm/C 9.5 10.1 Cross Flow Direction, E-5 mm/mm/C 10.2 13.3 4.2 MOLD SHRINKA
24、GE (ISO/DIS 294-3, 60 x 60 x 2.0 0.1 mm injection molded specimen) 4.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C Flow Direction, % 0.9 1.0 Cross Flow Direction, % 1.0 1.3 4.2.2 Post Shrinkage . After 30 minutes at 120 C Flow Direction, % 0.4 1.4 Cross Flow Direction, % 0.4 1.5 4.3 RECYCLING COD
25、E PP+EPDM 4.4 TENSILE MODULUS (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen A test speed: 1 mm/min) 880 MPa 4.5 CHARPY, NOTCHED (ISO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens) 4.5.1 At 23 +/- 2 C 60 kJ/m24.5.2 At -40 +/- 2 C 10 kJ/
26、m24.5.3 At 0 +/- 2 C 23 kJ/m2The test specimen must be conditioned for minimum of 6 hours 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 seconds. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D952-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 7 of 7 TYPICAL TENSILE STRESS VS TENSILE STRAIN ISO Tensile (50 mm/min Test Speed) Note: Contact Material Engineering for specifics on material
