1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 04 2013 12 09 N Status Replaced by WSS-M4D1028-A1/2 R. Harris, NA 2012 08 30 Revised See Summary of Revisions R. Harris, NA 2005 10 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1989 08 31 Released SM/EQ7118 TP L. Rodigas C
2、ontrolled document at www.MATS Copyright 2013, Ford Global Technologies, LLC Page 1 of 4 POLYPROPYLENE (PP) COPOLYMER, MEDIUM HIGH WSK-M4D670-A IMPACT MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic molding compound based on polyp
3、ropylene copolymer with medium high impact strength. This material is suitable for injection, extrusion, and blow molding. 2. APPLICATION This specification was released originally for material used in the assembly of the air cleaner (intake). 3. REQUIREMENTS Material specification requirements are
4、to be used for initial 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 Report Value (ISO 1133/A
5、STM D 1238, g/10 minutes 230 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
6、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. 3.5.2 Density 0.885 - 0.91 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERIN
7、G MATERIAL SPECIFICATION WSK-M4D670-A Copyright 2013, Ford Global Technologies, LLC Page 2 of 4 3.5.3 Tensile Strength at Yield, min 21 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 5.0% (Test Method according to para 3.5.3
8、) 3.5.4 Flexural Modulus, min 850 MPa (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 300 - 470 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 1
9、0 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 plotted c
10、urve 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 10 kJ/m 3.5.6.2 At -40 +/- 2 C 2.0 kJ/m 3.5.6.3 At 10 +/- 2 C 5.0 kJ/m The test specime
11、ns 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. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/-
12、0.2 mm specimen) 3.5.7.1 At 1.82 MPa 44 C 3.5.7.2 At 0.45 MPa 65 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) ENGINEERING MATERIAL SPECIFICATION WSK-M4
13、D670-A Copyright 2013, Ford Global Technologies, LLC Page 3 of 4 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 -25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rat
14、e, 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 80 Formation of clear film, droplets or crystals is cause
15、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 10 - 20-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm inj
16、ection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.0 - 2.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.2 - 0.3% After 30 min at 120 C 0.0 - 0.4% 5.3 HARDNESS, DUROMETER D 50 - 62 (ISO 868/ASTM D 2240, 15 s dwell) 6.0 SUMMARY OF REVISIONS 8/30/2012 Revised Melt Flow from 1.0 3.0 g/10 minutes, to Report Value ENGINEERING MATERIAL SPECIFICATION WSK-M4D670-A Copyright 2013, Ford Global Technologies, LLC Page 4 of 4
