1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Ver. 1 2011 10 12 N Status Replaced by WSS-M4D578-B1 G. Kowalski, NA 2008 07 29 Activated G. Kowalski, FNA Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 5 POLYAMIDE (PA) 6, HEAT STABILIZED, IMPACT MOD
2、IFIED, WSS-M4D578-A2 35% GLASS REINFORCED MOLDING COMPOUND, NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is heat stabilized, impact modified, 35% glass fiber reinforced polyamide 6 molding compound. 2. APPLICATION This specification was released originally for ma
3、terial used for oil pans. NOTICE: This material absorbs and retains moisture. Part design and tolerances must accommodate changes in part dimensions and physical properties due to moisture absorption or loss in the service/assembly environment. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTIO
4、N MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.2 CONDITIONING AND TEST CONDITIONING All test values indicated herein are based on material and specimens with moisture content not exceeding 0.2% (test a
5、ccording to ISO R 960, Method B/ASTM D 6869). 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%, conditioning the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 kPa. C
6、onduct 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. 3.3 MOLDING COMPOUND (s) 3.3.1 Glass Fiber Content 34.0 35.5% (ISO 3451/ ISO 15512) 3.3.2 Melting Temperature 212
7、 228 C (ISO 11357, Method C) 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATION WSS-M4D578-A2 Copyright 2011, Ford Global Technologies, LLC Page 2
8、 of 5 The following dimensions are required: A. 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (ISO/DIS 294-3) C. 355 x 100 x 1.0 +/- 0.1 mm (ISO 3795) Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The speci
9、mens shall be prepared according to ISO 294. No annealing allowed. (s) 3.4.2 Density 1.37 1.38 g/cm3 (ISO 1183, Method A) (s) 3.4.3 Tensile Strength at Max Load, min 151 MPa (ISO R 527-1 150 x 1x 4 mm specimen A). Test speed shall be 50 mm/minute for all materials. 3.4.6 Impact Strength, Izod, min (
10、ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, use center of section A, 10 specimens for each test) (s) 3.4.6.1 At 23 +/- 2 C 21.7 kJ/m2 (s) 3.4.6.2 At -40 +/- 2 C 15.7 kJ/m2 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temper
11、ature testing shall be done within the cold chamber, if not possible, test can be conducted outside, but within 5 seconds. 3.4.7 Heat Deflection Temperature, min (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A flat wise, 0.34 +/- 0.1 mm deflection) (s) 3.4.7.
12、1 At 1.82 MPa 202 C ENGINEERING MATERIAL SPECIFICATION WSS-M4D578-A2 Copyright 2011, Ford Global Technologies, LLC Page 3 of 5 3.4.8 Heat Aging Performance (ISO 188, except 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 -
13、5 h at 23 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.8.1 Tensile Strength at max +/- 30% load Change (Test Method per para 3.4.3) 3.4.8.2 Impact Strength, Izod Change +/- 30% Test method per para 3.4.6.1 specimens to be notched before he
14、at aging) 3.5 Fogging (SAE J1756, 3 h at 100 oC heating, 21 oC cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/min The specimen size required for material ap
15、proval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ISO 11359-2 TMA, temperature range -30 30 oC) Fl
16、ow 2.22-5mm/ C Across Flow 8.48-5mm/C 4.2 MOLD SHRINKAGE (ISO294-3 and 294-4, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen) 4.2.1 Molding Shrinkage, average After 48 h at 23 +/- 2 C Flow 0.34% X Flow 0.59% ENGINEERING MATERIAL SPECIFICATION WSS-M4D578-A2 Copyright 2011, Ford Global Technologie
17、s, LLC Page 4 of 5 4.2.2 Post Shrinkage, average (Separate specimens required for each test) After 48 h at 80 C Flow 0.38% X Flow 0.60% After 30 minutes at 120 C Flow 0.33% X Flow 0.63% 4.3 WATER ABSORPTION , max 1.1% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 4.4
18、IMPACT STRENGTH, IZOD, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, (use center section of specimen A), 10 specimens minimum) 4.4.1 After Moisture Conditioning 8.0 kJ/m2 The notched specimens shall be immersed for 48 h in distilled water at 50 +/- 1 C and subsequently conditioned for 1 h at 2
19、3 +/- 2 C and 50 +/- 5% relative humidity prior to test and tested under the same conditions within 1 h. 4.5 Heat Deflection Temperature, min (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A flat wise, 0.34 +/- 0.1 mm deflection) 4.5.1 At 0.45 Mpa 215 C 4.6 Poisons Ratio, mean 0.40 (ISO 527-1/2, 1mm/min) 4.7 Material Identification for Recycle Codes PA 6 GF35 ATTACHMENT: ENGINEERING MATERIAL SPECIFICATION WSS-M4D578-A2 Copyright 2011, Ford Global Technologies, LLC Page 5 of 5
