1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 08 N-STATUS No replacement named J. Crist, NA 2005 10 25 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1989 12 11 Released NL00E10022604 L. R. Gullen Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、 LLC Page 1 of 5 THERMOPLASTIC ETHER ESTER ELASTOMER + WSL-M4D655-A POLYBUTYLENE TEREPHTHALATE (TEEE+PBT) BLEND MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a blend molding compound based on thermoplastic ether ester elastomer and polybutylene
3、 terephthalate (TEEE+PBT). 2. APPLICATION This specification was released originally for material used for wheel covers. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers an
4、d 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 6 - 25 g/ (ISO 1133/ASTM D 1238, 250 C, 2.16 kg) 10 minutes 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified
5、 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 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the test specimen A
6、 and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.17 - 1.21 g/cm (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) ENGINEERIN
7、G MATERIAL SPECIFICATIONWSL-M4D655-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 3.5.3.1 Elongation at Yield, min 17.5% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 680 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +
8、/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 260 - 390 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 clamps 35-40 mm. Soa
9、k time at each temperature interval - 3 minutes minimum) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +200 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.6 Impact Strength, Izod, min (ISO 180, Me
10、thod 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 No break 3.5.6.2 At -20 +/- 2 C 11.0 kJ/m 3.5.6.3 At -40 +/- 2 C 5.5 kJ/m The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact te
11、st. 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 44 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/-0.2 mm specimen. At 1.82 MPa) 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50
12、air changes/h, 1000 h at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength Change, max -25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change, max No break (Test Method per para 3.5.6.1, specimens to be
13、notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSL-M4D655-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm
14、with a smooth surface. 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 10.7-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 m
15、m injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.40% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 1.85% After 30 min at 120 C 1.70% 5.3 HEAT DEFLECTION TEMPERATURE 55 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 0.
16、45 MPa) 5.4 MELT TEMPERATURE 227 C (ASTM D 3418, DSC) 5.5 INSTRUMENTED IMPACT STRENGTH, min (ASTM D 3763, Dynatup) At -29 +/- 1 C 15.0 J 5.6 ENVIRONMENTAL STRESS CRACK RESISTANCE No visible crazing (FLTM BO 127-03) or stress cracking for any of the 9 solvents/solutions ENGINEERING MATERIAL SPECIFICA
17、TIONWSL-M4D655-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 Test Modifications: - Use standard test bars (para 3.5.1, specimen A) - Protect stress block with aluminum foil. - Instead of immersing specimens, place several soaked cotton balls over the cen
18、ter of the stressed specimens for the duration of the test - 24 h. - Initial stress condition - 1% - Visually observe for the appearance of cracks, rather then using the stereomicroscope. Testing Solvents/Solutions 1. ASTM Fuel B +15% Toluene (by volume) 2. Brake Fluid (ESA-M6C25-A) 3. Underbody Coa
19、ting (ESA-M7C55-A - Widger Chemical Corp, WC-2240, Super Seal) 4. Automatic Transmission Fluid - ATF (ESP-M2C138-CJ) 5. Motor Oil SAE 10W30 (ESE-M2C96-G) 6. Tar and Road Oil Remover (ESR-M5B106-A) 7. Windshield Washer Fluid (ESB-M8B15-B) 8. Zinc Chloride (saturated) 9. Coolant Concentrate/Water - 50/50 vol.% (ESE-M97B44-A) ENGINEERING MATERIAL SPECIFICATIONWSL-M4D655-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
