1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2011 12 06 N Status Replaced by WSS-M4D741-B1 G. Kowalski, NA 2006 07 25 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 Fixed numbering in 3.7 2000 07 24 Activated A. Reaume Controlled document at www.MATS Copyright 2011, Ford
2、Global Technologies, LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER WSS-M4D969-A RESISTANT TO COOLING AGENTS NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polypropylene homopolymer with heat resistance to cooling agents. 2. APPLICATION This specification was
3、released originally for material used for engine coolant reservoir bottles. 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.
4、1 Melt Flow Rate 0.3 to 1.0 g/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
5、 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. 3.5.2 Density 0.895 to 0.905 g/cm3 (ISO 1183,
6、Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 30 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 9% (Test Method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATION WSS-M4D969-A Copyright 201
7、1, Ford Global Technologies, LLC Page 2 of 4 3.5.3.2 Elongation at Break, min 75% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 1200 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 320 to 580 MPa
8、(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.) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +130 C temperature range, at 5 C minimum inte
9、rvals. The plotted 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 6.5 kJ/m2 3.5.6.2 At 10 +/- 2 C 4.5 kJ/m2 3.5.6.3 At -40 +/- 2 C 1.
10、5 kJ/ m2 The 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 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D
11、 648, 80 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 48 C 3.5.7.2 At 0.45 MPa 87 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 125 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength Change +/- 15% (Te
12、st 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 aging) 3.5.8.3 Color Stability, CIElab, max 1.5 Delta E (150 min x 10 x 4.0 +/- 0.2 mm) ENGINEERING MATERIAL SPECIFICATION WSS-M4D969-A Copyright 2011, Ford Glo
13、bal Technologies, LLC Page 3 of 4 3.5.9 Yellowness Index, min 8.0 YI (ASTM D1925, 150 min x 10 x 4.0 +/- 0.2 mm ) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. 3.7 RESISTANCE TO COOLANT /
14、 WATER MIXTURE (1:1) (FLTM BO 130-01, 1000 h at 125 +/- 2 C, engine coolant(s) as defined by Ford materials engineer. Unaged property values shall be determined at the time of the aged properties.) 3.7.1 Tensile Strength Change +/- 15% (Test Method per para 3.5.3) 3.7.2 Impact Strength, Izod Change,
15、 max -15% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.7.3 Color Stability, CIElab, max 22 Delta E (150 min x 10 x 4.0 +/- 0.2 mm) 3.8 STAINING POTENTIAL OF DEPOSITS FROM COOLANT/HOSE INTERACTION FTLM BP 108-09, 500 h at lowest possible reflux, engine coolant(s) and co
16、mposite sample of currently approved hose material as defined by Ford materials engineer. 3.8.1 Color Change, CIElab, max 23 Delta E (150 min x 10 x 4.0 +/- 0.2 mm) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this spe
17、cification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM D 696) 5.1.1 Axial 11.7-5/C 5.1.2 Transverse 12.1-5/C 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 15% 5.3 HARDNESS, DUROMETER D 69 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATION WSS-M4D969-A Copyright 2011, Ford Global Technologies, LLC Page 4 of 4
