1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Released2010 01 21 A N-STATUS No replacement named J. Crist, NA 2000 02 04 Editorial no technical change APC 1985 06 20 B/001679 TP Revised and Retyped WP 3948-a Page 1 of 7 POLYAMIDE 11, RIGID, HEAT STABILIZED N
2、OT TO BE USED FOR NEW DESIGN SQ-M4D9002-A POLYAMIDE 11, RIGID, HEAT STABILIZED INACTIVE SQ-M4D9002-B 1. SCOPE The material defined by this specification is a heat stabilized polyamide 11 molding compound. 2. APPLICATION This specification was originally released for material used for oil retaining r
3、ings on nuts. 3. REQUIREMENTS Test Conditions: The test material has to be kept in a sealed air and moisture proof container. Prior to testing the material must be dried to constant weight at 40 to 50 C at a pressure below 133 Pa. Test Atmosphere: 23 +/- 2 C and 50 +/- 5 % relative humidity unless o
4、therwise specified. 3.1 REQUIREMENTS FOR THE EXTRUSION COMPOUND 3.1.1 Melting Point 180 - 190 C (ISO 1218, Method B) 3.1.2 Water Content, max 0.2 % (ISO R 960, Method B) 3.2 REQUIREMENTS FOR THE TEST SPECIMENS All tests shall be carried out on injection molded specimens with the exception of clause
5、3.2.7. These test specimens may be either compression molded, injection molded or extruded. Preparation of specimens according to ISO 294. The optimum molding conditions shall be as recommended by the supplier of the molding compound. Test specimens must not be annealed. 3.2.1 Density, Natural 1.04
6、+/- 0.02 g/cm3(ISO R 1183, Method A) This range may be exceeded by pigmented material. ENGINEERING MATERIAL SPECIFICATION SQ-M4D9002-A SQ-M4D9002-B WP 3948-a Page 2 of 7 3.2.2 Yield Point, min 40 MPa (ISO R 527, Type 1, thickness of test specimen: 3.0 - 3.2 mm, test speed 50 mm/minute) 3.2.3 Shear M
7、odulus (ISO 537, Method A, specimen size 60 x 10 x 1 mm) At 23 C 390 - 530 MPa Additionally a shear modulus curve shall be plotted from - 50 C to + 170 C and shall be within the tolerance range shown on page 7. At least one measurement at 5 C intervals is necessary to establish the curve. Note: The
8、test specimens must be injection molded in the above mentioned size with front end gating and shall not be cut from larger test specimens. 3.2.4 Izod Impact Strength, Notched (ISO 180/4A, specimen size 63.5 x 12.7 x 3.2 mm, type A notch, number of specimen: 10 for each test) The test specimens must
9、be injection molded in the above mentioned size with front end gating and shall not be cut from larger test specimens. Maximal fin 0.1 mm. At 23 C, min 3 kJ/m2At - 40 C, min 2.5 kJ/m2Note: The test specimens must be stored 6 - 8 h in the test box at specified test temperature +/- 1 C prior to impact
10、 test. Testing shall be done within the test box, if not possible, test can be conducted outside, but within 5 s. 3.2.5 Heat Deflection Temperature (ISO 75, specimen size: 127 x 12.7 x 3.2 mm) Method A, 1.80 MPa, min 38 C Method B, 0.45 MPa, min 120 C ENGINEERING MATERIAL SPECIFICATION SQ-M4D9002-A
11、SQ-M4D9002-B WP 3948-a Page 3 of 7 3.2.6 Thermal Oxidative Stability, min 15 days No break after test specimens have been bent completely flat against itself. Condition test specimens after removal from oven before bend test 30 - 60 minutes in a desiccator at room temperature. Test Method: Expose at
12、 least 5 specimens 60 x 10 x 1 +/-0.1 mm (clause 3.2.3) in a drying oven* with forced air circulation maintained at 150 +/- 1 C. For this purpose drill a hole of 3.5 mm is diameter through one end of the test specimens and suspend on a glass rod of approx. 3 mm in dia. taking care that specimens do
13、not contact each other during the exposure and are freely accessible by the surrounding heated air. Control of temperature shall be conducted in the immediate vicinity of specimens by 2 thermo couples. *The drying oven shall be of the forced air circulating type with vertical air guidance and an air
14、 velocity of 7.5 +/-1 m/s. Internal dimensions shall be 500 mm wide, 400 mm high and 400 mm deep. Maximum temperature deviation +/- 1 C. 3.2.7 Flammability 3.2.7.1 SQ-MD9002-A (ISO 3795) Burn Rate, max 100 mm/minute 3.2.7.2 SQ-MD9002-B (FLTM EU-BN 24-2) Burn Rate, max 100 mm/minute Note to Flammabil
15、ity (para 3.2.7.1. and 3.2.7.2): The flammability shall be determined on 100 x 355 mm specimens with a thickness of 0.9 - 1.1 mm and smooth surfaces. In order to comply with Federal Motor Vehicle Safety Standard No. 302, the materials, portions of components, and composites shall not burn or transmi
16、t a flame across their surface, at a rate of more than 100 mm/minute. To demonstrate compliance, the sample size and method of testing shall be in accordance with FLTM EU-BN 24-2. ENGINEERING MATERIAL SPECIFICATION SQ-M4D9002-A SQ-M4D9002-B WP 3948-a Page 4 of 7 3.2.7.2.1 Performance-Environmental A
17、geing Requirement All materials, portions of components, and composites defined by this specification that have not been treated, modified or reformulated, and exceed a maximum burn rate of 75 mm per minute as specified by the Flammability Lot Sampling Plan of FLTM EU-BN 24-2, must be evaluated for
18、permanency of the materials flame retardant properties per SK-M99P9500-A, Table 1 according to the accelerated environmental ageing requirements applicable to the basic material category of this particular specification. Any material, portions of components, and composites defined by this specificat
19、ion that have been treated, modified or reformulated to conform to Flammability Lot Sampling Plan of FLTM EU-BN 24-2, regardless of maximum burn rate, must be evaluated for both permanency of materials flame retardant properties and changes in mechanical, chemical and physical properties per SK-M99P
20、9500-A, Table 1 applicable to the basic material category of this particular specification. 3.3 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR spectra and ther
21、mograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. 3.4 SUBSTANCE CONTRO
22、L Legal, health, safety and environmental constraints may apply to the materials which are submitted for approval to this specification. Refer to Engineering Material Specification SK-M99P9999-A. ENGINEERING MATERIAL SPECIFICATION SQ-M4D9002-A SQ-M4D9002-B WP 3948-a Page 5 of 7 3.5 REQUIREMENTS FOR
23、THE FINISHED PART As specified on Engineering Drawing. 3.6 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, constructi
24、on, color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the pro
25、posed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrict
26、ions are defined in Engineering Materials Specification WSS-M99P9999-A1. 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of int
27、erest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstra
28、ting full compliance with all the requirements of this specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessm
29、ent of suitability for intended processes and/or applications. Upon approval, the material will be added to the Engineering Material Approved Source List. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification
30、. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 9 - 15 x 10E-5 1/C (ASTM D 696) ENGINEERING MATERIAL SPECIFICATION SQ-M4D9002-A SQ-M4D9002-B WP 3948-a Page 6 of 7 5.2 SHRINKAGE (ISO 2577) Injection molded specimen 5.2.1 Molding Shrinkage 0.9 - 1.6 % After 48 h storage at room temperature. 5.2.2 Post S
31、hrinkage 5.2.2.1 After Storage For 48 h at 80 C 0 - 0.30 % 5.2.2.2 After Storage for 30 minutes at 120 C 0.20 - 0.50 % 5.3 WATER ABSORPTION 0.3 - 0.5 % (ISO 62, Method 1, except test result in percent. Test specimens dry as molded; specimen dia: 50 +/-1 mm, specimen thickness: 3.0 +/- 0.2 mm) 5.4 FLEXURAL MODULUS 940 - 1010 MPa (ISO 178, tangent, specimen size 80 x 10 x 4 mm) Sr-Factor 0.01 Bending span 60 mm ENGINEERING MATERIAL SPECIFICATION SQ-M4D9002-A SQ-M4D9002-B WP 3948-a Page 7 of 7
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