1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 09 10 N-STATUS Replaced by WSS-M4D1051-A1, WSS-M4D1052-A2, WSS-M4D1053-A1 WSS-M4D1053-A2 L. Soreide, NA 2006 02 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1991 09 02 Released EP00E01089488000 P. Kuntze Printed copies ar
2、e uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 POLYCARBONATE (PC), MODIFIED, HIGH HEAT WSK-M4D796-A2 RESISTANT MOLDING COMPOUND, INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high heat resistant molding compound based on bis
3、phenol A/bisphenol C derived co-polycarbonate. This material is self-extinguishing (SE) without flame retardant additives. The material is colored, transparent or pigmented for use in interior applications. 2. APPLICATION This specification was released originally for material used for lamp filters.
4、 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 4.0 - 8 g/10 minutes (ISO 1133/ASTM D 1238, 320 C, 2.16 kg
5、) The material shall be dried for 4 h minimum at 130 - 140 C in a mechanical convection oven immediately preceding the test. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The fo
6、llowing dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3
7、.5.2 Density 1.14 - 1.16 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 65 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D796-A2 Printed copies are uncontrolled Copyright 2010, F
8、ord Global Technologies, LLC Page 2 of 5 3.5.3.1 Elongation at Break, min 60% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 2.0 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 740 - 1100 MPa (ASTM
9、 D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of specimen A. Specimen length between clamps 35 - 40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modul
10、us vs. Temperature curve shall be plotted for -50 to +180 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for eac
11、h test) 3.5.6.1 At 23 +/- 2 C 7 kJ/m23.5.6.2 At -40 +/- 2 C 4 kJ/m2The test specimens must be conditioned for minimum 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 conducted outside, but within
12、5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 154 C 3.5.7.2 At 0.45 MPa 171 C All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with sil
13、ica gel. 3.5.8 Vicat Softening Temperature, min 180 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temperature raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 49.0 N load) All specimens dry as molded. If not tested immediately after molding, specimens
14、 must be stored in a sealed, moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D796-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/0 50 air changes/h, 1000 h a
15、t 140 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at max +/- 25% Load Change (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change -40% (Test Method per para 3.5.6.1, specimens to be notched before heat ag
16、ing) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute Self-Extinguishing (SE) The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 95 The formation of droplets or coalescence into a clear film is ca
17、use for rejection. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1 and 3.8.2 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 other d
18、eterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume), or equivalent at permission of the affected Product Development Materials Activity. All initial approvals will be based
19、 on the preliminary Weatherometer exposure, pending Florida exposure results for final approval. 3.8.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, 1240 kJ/m2exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4
20、(FLTM BI 160-01, 5 south, under glass, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D796-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5. GENERAL INFORMATION The info
21、rmation given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7 8-5/C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . A
22、fter 48 h at 23 +/- 2 C 0.8 - 0.9% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.05% . After 30 min at 120 C 0.05% 5.3 MELT VOLUME RATE 4 - 8 cm3/10 minutes (ISO 1133/ASTM D 1238, 320 C, 2.16 kg) The material shall be dried for min of 4 h at 130 - 140 C in a mechanical convection oven immediately prior to testing. 5.4 RECYCLING CODE SAE PC OPTIONAL ENGINEERING MATERIAL SPECIFICATIONWSK-M4D796-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
