1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 17 N-STATUS Replaced by WSS-M4D638-B R. Lord 2006 01 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 06 01 Released EP00E01031536000 L. Rodigas Printed copies are uncontrolled Copyright 2006, Ford Global Technologies
2、, LLC Page 1 of 5 POLYPROPYLENE (PP) COPOLYMER, HIGH MELT RATE WSK-M4D765-A FLOW MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an injection molding compound based on polypropylene copolymer with controlled rheologic (CR) properties and high mel
3、t flow rate. 2. APPLICATION This specification was released originally for material used for various interior applications where no specific requirements to weathering resistance are required, e.g. folder emission control. 3. REQUIREMENTS Material specification requirements are to be used for initia
4、l qualification of materials. 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 30 - 40 g/10 minutes (ISO 1133/ASTM D 1238, 2
5、30 C, 2.16 kg) 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 following 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 +/
6、- 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D765-A Printed copies are uncontrolled Copyright 2006, Ford Global Tec
7、hnologies, LLC Page 2 of 5 3.5.2 Density 0.89 - 0.91 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 20 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Yield, min 10% (Test Method according to para
8、3.5.3) 3.5.4 Flexural Modulus, min 1.0 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 380 - 570 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 6
9、0 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 Modulus vs. Temperature curve shall be plotted for -50 to +140 C temperature range, at 5 C minimum intervals. The plo
10、tted curve must be within tolerance range shown on page 4. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 4.0 kJ/m2 3.5.6.2 At -40 +/- 2 C 1.5 kJ/m2 3.5.6.3 At 10 +/- 2 C 3.0 kJ/m2 The t
11、est 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 5 s. ENGINEERING MATERIAL SPECIFICATION WSK-M4D765-A Printed copies are
12、uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 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 45 C 3.5.7.2 At 0.45 MPa 72 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h a
13、t 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change, max -15% (Test Method per para 3.5.6.1, specimens to be notched before heat
14、aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 60 Formation of
15、 clear film, droplets or crystals is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 12 - 16-5/ C (ASTM D 696) ENGINEERING MATERIAL SPEC
16、IFICATION WSK-M4D765-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.6 5.2.2 Post Shrinkage (Separate specimens r
17、equired for each test) After 48 h at 80 C 0.2 - 0.5 After 30 min at 120 C 0.0 - 0.5 5.3 HARDNESS, DUROMETER D, min 66 (ISO 868/ASTM D 2240, 15 s dwell) 5.4 DETERMINATION OF CR GRADE Melt Flow Rate Ratio, max 4 Melt Flow Rate Ratio = B/A x 100 Where: A - Melt Flow Rate at 190 C and 0.325 kg B - Melt Flow Rate at 190 C and 10 kg Test Method A and B according to ISO 1133 ENGINEERING MATERIAL SPECIFICATION WSK-M4D765-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
