1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 0 2010 04 15 Activated V.Cerato concurred by Global Material TeamPrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO), WSS-M4D940-A3 25% GLASS FIBER REINFORCED,
2、 HIGH IMPACT, HIGH SCRATCH RESISTANCE, 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 “soft touch“ feel. 2. A
3、PPLICATION This specification was released originally for material used for the CD340 MCA rear quarter panels. 2.1 LIMITATIONS The “soft touch“ feel of this material is grain dependent. Animal grains tend to feel softer than the technical grains. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCT
4、ION 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 latest ISO test methods.
5、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 shall be responsible
6、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 process data with Ford Mate
7、rials 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 MOLDING COMPOUND (s) 3.
8、2.1 Filler Content, % 22-32 (ISO 3451-1, Method A, 1h at 850 +/- 50 oC, test portion, 2 2.5g) NOTE: The glass fiber content is 25% +/- 3%. The range stated in the specification accommodates the variation due to the pigment loading. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D940-A3 Printed copies are u
9、ncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 3.3 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
10、4.0 +/- 0.2 mm (ISO 527-2, specimen type 1A) B. 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 1.04-1.12 g/cm3(I
11、SO 1183, Method A) (s) 3.3.3 Tensile Strength at Yield, min 30 MPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen A, test speed: 50 mm/minute) (s) 3.3.3.1 Elongation at Yield, min 10 % (Test Method according to para 3.3.3) (s) 3.3.4 Tensile Modulus, min 2.1 GPa (ISO 527-1 & ISO 5
12、27-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen A test speed: 1 mm/min) (s) 3.3.5 Flexural Modulus, min 2.3 GPa (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) 3.3.6 Impact Strength, Izod, notched, min (ISO 180/1A, 80 x 10 x
13、 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) 3.3.6.1 At 23 +/- 2 C 20 kJ/m23.3.6.2 At -40 +/- 2 C 4 kJ/m2 3.3.6.3 At 10 +/- 2 C 10 kJ/m2 The test specimens must be conditioned for min of 6 h at the above specified temperature prior to impact test. Low temper
14、ature testing shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D940-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 (s) 3.3.7 Heat Deflection Temperature, min 70 C (
15、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) 3.3.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 oC. Unaged property values shall be determined at the time of the ag
16、ed properties determination) 3.3.8.1 Tensile Strength Change, max -25% (Test Method per para 3.3.3) 3.3.8.2 Impact Strength, Izod Change, max -25% (Test Method per para 3.3.6.1, specimens to be notched before heat aging) 3.4 ODOR, max Rating 3 (FLTM BO 131-03) 3.5 FOGGING (SAE J1756, 3 h at 100 C he
17、ating, 21 C cooling plate, post test conditioning 16 h) Fog Number, min 80 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 approval is 355 x 100 x 1.0 +/- 0.1 mm (use speci
18、men B) 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 addition, there shall be no cracking, crazing or
19、other deterioration. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D940-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 3.7.1 Filtered Xenon Arc Weatherometer Rating 4, min (FLTM BO 116-01, 2481.6 kJ/m2exposure min, specimen size: 150 x 100 mm min, 3.2 +/- 0.2
20、mm thick, molded in smooth polished mold) Use current program black, grey and tan colors for initial approval. Color submissions: All Program Colors 3.8 SCRATCH RESISTANCE Resistance to Scratch and Mar (for definitions see note) (FLTM BO 162-01, visual evaluation, 1 mm scratch balls at 2.0 N, 3.0 N,
21、 7.0 N, 10.0 N, and 15.0 N load) Scratch 2 N, Rating 2 max Whitening/Color Change 7 N, Rating 1 max Marring 2 N, Rating 2 max Note: Scratch - defined as a deformation or cutting of the grained/ungrained surface. Whitening/Color Changes - defined as a white line or color change visible at all angles
22、for mold in color materials. Marring - Defined as a gloss change or burnishing with no deformation or whitening of the surface. 3.9 IMPACT STRENGTH, MULTIAXIAL, MIN (ASTM D 3763, 100 mm diameter x 3.2 mm thick smooth surface injection molded specimen) 3.9.1 At 23 +/- 2 C 4 J at max load 3.9.2 At -30
23、 +/- 2 C 1.5 J at max load Impact velocity: 6.6 m/s for materials used in interior applications only Report test data for 23 +/- 2 C, and the lowest of the following temperatures in which a minimum of 24 out of 30 ductile failures were observed: -40 +/- 2 C, or -30 +/- 2 C, or -15 +/- 2 C, or 0 +/-2
24、 C, and 23 +/- 2 C. Test specimens must be conditioned for minimum of 6 h at test temperature 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 envi
25、ronment to the testing environment, provided the transfer is within 5 seconds. Test a minimum 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. ENGINEERING MATERIAL SPECIFIC
26、ATIONWSS-M4D940-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 MELT FLOW RATE 4-8 g/10 minutes (ISO 113
27、3, 230 C, 2.16 kg) 4.2 COEFFICIENT OF LINEAR THERMAL EXPANSION (ISO 11359-2 TMA, temperature range -30 to +100 C) . Axial 2-5 E-5mm/mm/C . Transverse 7-10 E-5mm/mm/C 4.3 MOLD SHRINKAGE (Report test method used and specimen dimensions) 4.3.1 Molding Shrinkage 4.3.1.1 After 48 h at 23 +/- 2 C, Flow Direction Report Value, % 4.3.1.2 After 48 h at 23 +/- 2 C, Cross Flow Direction Report Value, % 4.4 RECYCLING CODE (ISO 11469) PP+EPM-GF25
