1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 11 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.7, 3.8 & 4 1991 03 01 Revised EP00E01089482000 C.L. Voss Conc. J. Schult 1990 07 02 Released D-MB/PQ-13 EP00E01031537000 C.L. Voss Conc. J. Schult Printed copies are uncontrolled Copyright 2
2、005, Ford Global Technologies, LLC Page 1 of 4 POLYAMIDE (PA) 12, FLEXIBLE, HEAT STABILIZED, WSK-M4D701-A MOLDING AND EXTRUSION COMPOUND 1. SCOPE The material defined by this specification is a type 12 polyamide (nylon) molding compound. 2. APPLICATION This specification was released originally for
3、material used for fuel lines. 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 3.0 STANDARD REQUIREMENTS FOR PRODU
4、CTION 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 values indicated herein are based on material and specimens with moisture content not exceeding 0.2% (test
5、 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%, condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. Conduc
6、t 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 COMPOUND 3.4.2 Melt Temperature, min 172 - 182 C (ISO 1218, Method B/ASTM D 789, or DSC - ASTM E 794) 3.5 M
7、OLDED 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 mm ENGINEERING
8、 MATERIAL SPECIFICATIONWSK-M4D701-APrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 4 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 allo
9、wed. 3.5.2 Density 1.02 - 1.04 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 24 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 28% (Test Method acc. to para 3.5.3) 3.5.4 Flexural Modulu
10、s, min 350 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 150 - 225 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
11、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 shall be plotted for -50 to +180 C temperature range, at 5 C minimum intervals. The plotted curve must be within tol
12、erance range shown on page 4. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 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 3.0 kJ/m23.5.6.3 At -40 +/- 2 C 3.0 kJ/m2The test specimens must be conditioned
13、 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 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) ENGIN
14、EERING MATERIAL SPECIFICATIONWSK-M4D701-APrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 4 3.5.7.1 At 1.82 MPa 40 C 3.5.7.2 At 0.45 MPa 90 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 130 +/- 2 C. After heat aging tes
15、t 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 Tensile Strength at Max +/- 25% Load Change (Test Method per para 3.5.3) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm
16、/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm 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
17、 10 - 14-5/ 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 1.5 - 2.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.2 - 0.5% . After 30 minutes at
18、120 C 0.2 - 0.5% 5.3 WATER ABSORPTION, max 0.1 - 0.3% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 FOGGING (FLTM BO 116-03) Fog Number, min 15 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D701-APrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 4
