1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 29 N-STATUS Replaced by WSS-M4D752-B1 V. Cerato, EU 2006 01 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.9, 3.10 & 4 1990 04 02 Released EP00E01031534000 M. Siewert Printed copies are uncontrolled Copyright 2010, Ford Global Technologi
2、es, LLC Page 1 of 5 POLYAMIDE (PA) 66, HEAT STABILIZED, COOLING WSK-M4D752-A AGENT RESISTANT, 30% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat stabilized, cooling agent resistant glass fiber reinforced polyamide 6
3、6 molding compound. 2. APPLICATION This specification was released originally for material used for parts of engine cooling system. NOTICE: This material absorbs and retains moisture. Part design and tolerances must accommodate changes in part dimensions and physical properties due to moisture absor
4、ption or loss in the service/assembly environment. 3. REQUIREMENT 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). 3.3 CONDITIONING AND TEST CONDITIONS All test value
5、s indicated herein are based on material and specimens with moisture content not exceeding 0.2% (test according to ISO 960, Method B/ASTM D 789). All test materials immediately after processing have to be sealed in containers that are impermeable to water vapor. If the moisture content exceeds 0.2%,
6、 condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. Conduct tests in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.4 MOLDING COMPOU
7、ND 3.4.1 Glass Fiber Content 27.5 - 32.5% (ISO 3451/4, test temperature 600 +/- 25 C, test portion 1 g) 3.4.2 Melt Temperature 250 - 265 C (ISO 1218, Method B/ASTM D 789) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D752-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page
8、 2 of 5 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 3167) B. 120 x 10 x 4.0 +/- 0.2 m
9、m 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 1.34 - 1.40 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 155
10、MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 7.5 GPa (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 1.44 - 2.40 GPa (ASTM D 4065, forced constant am
11、plitude, 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. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shal
12、l be plotted for -50 to +240 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, 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
13、 C 7.5 kJ/m23.5.6.2 At -40 +/- 2 C 7.0 kJ/m2The 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. ENGINEERING MATERI
14、AL SPECIFICATIONWSK-M4D752-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 235 C 3.5.7.2 At 0.45 MPa 250 C 3.5.8 Heat Aging Performance (ISO
15、188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Impact Strength, Izod Change +/- 25%
16、Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 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. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 60 Formation of excess
17、ive amounts of clear film or droplets is cause for rejection. 3.8 COOLING AGENT RESISTANCE (FLTM BO 130-01, 1000 h at 125 +/- 2 C, 50/50% coolant/water, 10 test specimens minimum, engine coolant acc.to WSE-M97B44-D and/or approved coolant of affected model year - see para 5.5. Unaged property values
18、 shall be determined at the time of the aged properties determination) 3.8.1 Tensile Strength at Max Load, min 25 MPa (Test Method per para 3.5.3) 3.8.2 Impact Strength, Izod, min 3 kJ/m2(Test Method per para 3.5.6.1, specimens to be notched before immersion) ENGINEERING MATERIAL SPECIFICATIONWSK-M4
19、D752-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 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 2.4 - 3.3-5/
20、 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 +/- 2 C 0.2 - 1.5% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.01 - 0.08% After 30 minutes at 120 C 0.01 - 0.
21、10% 5.3 WATER ABSORPTION 0.8 - 1.1% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 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 minimum) 5.4.1 After Moisture Conditioning 16 kJ/m2The no
22、tched specimens shall be immersed for 48 h in distilled water at 50 +/- 1 C and subsequently conditioned for 1 h at 23 +/- 2 C and 50 +/- 5% relative humidity prior to test and tested under the same conditions within 1 h. 5.5 For information on currently approved service fluids and other materials r
23、equired for use in this specification contact: Materials Laboratory 15/GM-D01-D Fluids Material Section Research and Engineering Centre Coolants/Greases Ford Motor Company Ltd Engine Engineering Laindon, Basildon Ford Motor Co. Essex SS15 6EE, England PO Box 2053 21500 Oakwood Blvd. Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia ENGINEERING MATERIAL SPECIFICATIONWSK-M4D752-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
