1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2012 05 16 N-STATUS Replaced by WSS-M4D741-B1 G. Kowalski, NA 2006 10 16 N-STATUS Replaced by WSS-M4D638-B R. Lord 1986 03 20 Released SM/EQ5600TP Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of 4 POLYPR
2、OPYLENE, COOLING AGENT AND ESK-M4D538-A HEAT STABILIZED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molding compound based on polypropylene homopolymer cooling agent and heat stabilized. The material is natural colored and remains translucent when exposed t
3、o cooling agent at boiling temperature. 2. APPLICATION This specification was released originally for material used for the overflow bottle of cooling system. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standar
4、d Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate, max. 2.0 g/10 min (ISO 1133, 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 t
5、est specimens. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 0.900 0.905 g/cm3(ISO R 1183, Method A) 3.5.3 Tensile Strength at Yield, min. 30 MPa (ISO R 527, Type 1, 3.2 +/- 0.1 mm specimen thickness, 50 mm/min test speed) 3.5.3.1 Elongation at Yield, min.
6、 10% (Test Method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONESK-M4D538-A Copyright 2012, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min. 1050 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.1 mm specimen, Sr-factor 0.01) 3.5.5 Shear Modulus at 23 +/- 2 C 465 - 635 MPa (ISO
7、537, Method A, 60 x 10 x 1.0 +/- 0.1 mm, front end gated injection molded specimen, not cut from larger test specimen) Additionally, a shear modulus vs. temperature curve shall be plotted from -50 to +160 C temperature range, at 5 C intervals. The plotted curve must be within tolerance range shown o
8、n page 4. 3.5.6 Impact Strength, Izod, min. (ISO 180/4A, 63.5 x 12.7 x 3.2 +/- 0.1 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 4.8 kJ/m23.5.6.2 At 0 +/- 2 C 1.2 kJ/m23.5.6.3 At -40 +/- 2 C 1.2 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified te
9、mperature 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, 127 x 12.7 x 3.2 +/- 0.1 mm specimen) 3.5.7.1 At 1.82 MPa 50 C 3.5.7.2 At 0.45 MPa 90 C 3.6 SPEC
10、IAL REQUIREMENTS 3.6.1 Cooling Agent Resistance No break after ageing. In addition, specimens must remain translucent. Slight yellowing is permitted. TEST METHOD: ISO 180/4 specimens unnotched. Ten specimens shall be subjected to boiling glycol water solution (50:50% by volume) under reflux condense
11、r for 42 days. (Glycol according to specification SS-M97B9103-A). Subsequently, specimens shall be conditioned at 23 +/- 2 C and 50 +/- 5% relative humidity for 24 h prior to test for impact resistance. ENGINEERING MATERIAL SPECIFICATIONESK-M4D538-A Copyright 2012, Ford Global Technologies, LLC Page
12、 3 of 4 3.6.2 Thermal Oxidative Stability, min. 50 d The material shall show any deterioration or local brittleness within the required exposure time. TEST METHOD: Expose at least 5 specimens 60 x 10 x 1 +/- 0.1 mm in a drying oven* with forced air circulation maintained at 140 +/- 1 C. For this pur
13、pose drill a hole of 3.5 mm in dia. through one end of the test specimens and suspend on a glass rod of approx. 3 mm in dia. taking care that specimens do not contact each other during the exposure and are freely accessible by the surrounding heated air. Control of temperature shall be conducted in
14、the immediate vicinity of the specimens by 2 thermo couples. *The drying oven shall be of the forced air circulating type with vertical air guidance and an air velocity of 7.5 +/- 1 m/s. Internal dimensions shall be 500 mm wide, 400 mm high and 400 mm deep. Maximum temperature deviation +/- 1 C. 5.
15、GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10 x 10-5/C (ASTM D 696) 5.2 MOLD SHRINKA
16、GE (ISO 2577, approx. 150 x 100 x 3.1 +/- 0.1 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at RT 1.8% 5.2.2 Post Shrinkage . After 48 h at 80 C 0.3% 5.3 HARDNESS, DUROMETER D 70 (ISO 868, 15 s dwell) 6. SUMMARY OF REVISIONS 2012 05 16 Changed replaced by spec from WSS-M4D638-B to WSS-M4D741-B1 ENGINEERING MATERIAL SPECIFICATIONESK-M4D538-A Copyright 2012, Ford Global Technologies, LLC Page 4 of 4
