1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 02 23 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 Corrected numbering 3.5.7 1992 07 01 Released EP00E10176272000 L. Rodigas Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 THERMOPLASTIC
2、POLYOLEFIN ELASTOMER (TEO) WSK-M4D777-A3 HIGH COLD IMPACT MOLDING COMPOUND 1. SCOPE The material defined by this specification is a rigid thermoplastic polyolefinic elastomer (TEO) injection molding compound with high cold impact resistance. 2. APPLICATION This specification was released originally
3、for material used for undershield brackets etc. 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 1.5 - 3.5 g
4、/10 minutes (ISO 1133/ASTM D 1238, 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
5、 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. 3.5.2 Density 0.89 - 0.93 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3
6、.5.3 Hardness, Durometer D 48 - 55 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D777-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Tensile Strength at Yield, min 16 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.
7、2 mm specimen, 50 mm/minute test speed) 3.5.4.1 Elongation at Yield, min 8.0% (Test Method according to para 3.5.4) 3.5.5 Flexural Modulus, min 650 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minute test speed, 64 mm support span, the radius of the loadin
8、g nose 5.0 +/- 0.1 mm and of the supports 2.0 +/- 0.2 mm) 3.5.6 Shear Modulus at 23 C 250 - 380 MPa (ASTM 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 cl
9、amps 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 +150 C temperature range, at 5 C minimum intervals. The plotted curves must be within tolerance ranges shown on page 4. 3.5.7 Impact Strength, Izo
10、d, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.1 mm specimen, 10 specimens for each test) 3.5.7.1 At 23 +/- 2 C 45 kJ/m23.5.7.2 At -40 +/- 2 C 4.0 kJ/m2 3.5.7.3 At 0 +/- 2 C 35 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prio
11、r 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. 3.5.8 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm) 3.5.8.1 At 1.80 MPa
12、35 C 3.5.8.2 At 0.45 MPa 55 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D777-A3 Printed copies are uncontrolle
13、d Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.9.1 Tensile Strength at Yield Change +/- 20% (Test Method per para 3.5.4) 3.5.9.2 Impact Strength, Izod Change, max -15% (Test Method per para 3.5.7.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03) Fog Number,
14、min 80 The formation of droplets or coalescence into a clear film is cause for rejection. 3.7 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. 5. GENERAL INFORMATION The information given below
15、is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10 13-5/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 . After 48 h at 23 +/
16、- 2 C 1.4% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.2 - 0.3% . After 30 minutes at 120 C 0.0 - 0.4% 5.3 RECYCLING CODE SAE or PP+EPDM PP+EPDM OPTIONAL ENGINEERING MATERIAL SPECIFICATIONWSK-M4D777-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
