1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 1 2012 01 31 Revised Corrected 3.3.9 heat age temp Y. Bankowski, FNA 2009 04 15 Activated Y. Bankowski, FNA Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO
2、), WSS-M4D940-A2 18% GLASS FIBER REINFORCED, HIGH IMPACT, LOW GLOSS, UV STABILIZED MOLDED IN COLOR, INTERIOR 1. SCOPE The material defined by this specification is a glass filled, molded-in-color, low gloss thermoplastic olefin that is UV stabilized for interior trim applications that require a “sof
3、t touch“ feel. 2. APPLICATION This specification was released originally for material used for the 2011 U38X upper door roll-over. 2.1 LIMITATIONS This “soft touch“ feel of this material is grain dependent. Animal grains tend to feel softer than the technical grains. 3. REQUIREMENTS 3.1 STANDARD REQ
4、UIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values using late
5、st ISO test methods. 3.1.2 This specification was developed using virgin material properties. The use of regrind is permitted, for economic/ / environmental reasons, with compliance as indicated in WSS-M99P1111-A. Critical Process Parameters At the request of Ford Materials Engineering the supplier
6、shall be responsible to collect critical process control data on each lot of material produced. Testing required will be jointly developed between Ford Materials Engineering and the supplier based on CP and PFMEA review at the time of initial approval. Annually the supplier will review the in proces
7、s data with Ford Materials Engineering to show that the process has remained under control. The data needs to be submitted in January for the previous calendar year. Data showing poor quality control measures or lack of submitted data may result in deletion from the Ford Approved Source List. 3.2 MO
8、LDING COMPOUND (s) 3.2.1 Melt Flow Rate 5 - 10 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s) 3.2.2 Filler Content, % 16 - 20 (ISO 3451-1, Method A, 1h at 850 +/- 50 oC, test portion, 2 2.5g) ENGINEERING MATERIAL SPECIFICATION WSS-M4D940-A2 Copyright 2012, Ford Global Technologies, LLC Page 2 of 5 3.3
9、MOLDED TEST SPECIMEN 3.3.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 527-2, specimen type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (
10、ISO/DIS 294-3) C. 355 x 100 x 1.0 +/-0.1 mm (ISO 3795) Test specimen A shall be molded using molding conditions defined in ISO 1873-2. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. 3.3.2 Density 1.00 1.05 g/cm3(ISO 1183, Method A) (s) 3.3.3 T
11、ensile Strength at Max Load, min 25 MPa (ISO 527-1 150 x 10 x 4 mm specimen A). Test speed shall be 50 mm/minute. Provide a curve of tensile stress versus strain using one specimen per lot at each of the following temperatures: -40 C, 23 C and 85 C. For ductile materials, the curve shall cover strai
12、n through yield point. (s) 3.3.5 Tensile Modulus 1.5 GPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen A test speed 5 mm/min) (s) 3.3.6 Impact Strength, Izod, notched, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test
13、) 3.3.6.1 At 23 +/- 2 C 20 kJ/m23.3.6.2 At -40 +/- 2 C 6.2 kJ/m2 3.3.6.3 At 10 +/- 2 C 20 kJ/m2 The test specimens must be conditioned for min of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box, if not possible, test can be condu
14、cted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATION WSS-M4D940-A2 Copyright 2012, Ford Global Technologies, LLC Page 3 of 5 (s) 3.3.7 Flexural Modulus, min 1600 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) (s)
15、 3.3.8 Heat Deflection Temperature, min 70 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 1.82 MPa) 3.3.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 oC. Unaged property va
16、lues shall be determined at the time of the aged properties determination) 3.3.9.1 Tensile Strength Change +/- 15% (Test Method per para 3.3.3) 3.3.9.2 Impact Strength, Izod Change, max +/- 15% (Test Method per para 3.3.6.1, specimens to be notched before heat aging) 3.4 ODOR, max Rating 3 (FLTM BO
17、131-03) 3.5 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number, min 90 Formation of clear film, droplets or crystals is cause for rejection. 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material ap
18、proval is 355 x 100 x 1.0 +/- 0.1 mm (use specimen C) with a smooth surface. 3.7 WEATHERING RESISTANCE After exposure in accordance with para 3.7.1, the material shall show no fading or color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). In ad
19、dition, there shall be no cracking, crazing or other deterioration. ENGINEERING MATERIAL SPECIFICATION WSS-M4D940-A2 Copyright 2012, Ford Global Technologies, LLC Page 4 of 5 3.7.1 Filtered Xenon Arc Weatherometer Rating 4, min (FLTM BO 116-01, 3609.6 kJ/m2exposure min, specimen size: 150 x 100 mm m
20、in, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8 IMPACT STRENGTH, MULTIAXIAL, MIN (ASTM D 3763, 100 mm diameter x 3.2 mm thick smooth surface injection molded specimen) 3.8.1 At 23 +/- 2 C 5.0 J 3.8.2 At -30 +/- 2 C 2.0 J Impact velocity: 6.6 m/s for materials used in interior applicati
21、ons only Report test data for 23 +/- 2 C, and the lowest of the following temperatures in which a minimum of 24 out of 30ductile failures were observed: -40 +/- 2 C, or -30 +/- 2 C, or -15 +/- 2 C, or 0 +/-2 C, and 23 +/- 2 C. Test specimens must be conditioned for minimum of 6 h at test temperature
22、 prior to impact testing. Low temperature testing shall be conducted within the same environmental chamber as the clamp mechanism of the impact device. Specimens can be transported from the conditioning environment to the testing environment, provided the transfer is within 5 seconds. Test a minimum
23、 of 10 specimens from 3 individual lots at a single condition. A ductile failure is defined as a crack that does not radiate more than 10 mm from the center of the impact point. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirement
24、s of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ISO 11359-2 TMA, temperature range -30 to +30 C) . Axial 3.0 E-05/C . Transverse 9.0 E-05/C 4.2 MOLD SHRINKAGE (ISO 294-3 and 294-4, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen B) 4.2.1 Molding Shrinkage . After 48 h at 23
25、+/- 2 C, Flow Direction 0.2% - 0.6% . After 48 h at 23 +/- 2 C, Cross Flow Direction 0.2% - 0.6% 4.3 HARDNESS, DUROMETER D 48 - 54 (ISO 868, 15 s dwell) 4.4 RECYCLING CODE (ISO 11469) PP+EPM-GF18ENGINEERING MATERIAL SPECIFICATION WSS-M4D940-A2 Copyright 2012, Ford Global Technologies, LLC Page 5 of 5 5. SUMMARY OF REVISIONS 2012 01 31 Corrected para 3.3.9 Heat Aging Performance temperature from 130 to 120C
