1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2011 09 21 N Status Replaced by WRS-M4D582-B2 A. Pan, APA 2005 07 22 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 2002 04 09 Activated J. Faunt Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC
2、Page 1 of 3 POLYBUTYLENE TEREPHTHALATE (PBT), POLYETHYLENE WSS-M4D582-A2 TEREPHTHALATE, HEAT STABILIZED 50% GLASS FIBER REINFORCED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat stabilized 50% glass fiber reinforced blend of polybutylene and polyethylene
3、terephthalate compound. 2. APPLICATION This specification was released originally for material used for mirror brackets. 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). 3.1.1 All requirements of this specification, identified by symbol(s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND 3.4.1 Filler Content 50 +/- 2% (ISO 3451/4, t
5、est temperature 600 +/- 25 C, test portion 1 g) 3.4.2 Melt Temperature, min 215 C (ISO 3146) 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:
6、 A. 150 min x 10 x 4.0 +/-0.2 mm (Tensile Bar, ISO 3167) 120 x 10 x 4.0 +/- 0.2 mm (ISO/DIS 294-3) 355 x 100 x 1.0 +/- 0.1 mm (ISO 3795) ENGINEERING MATERIAL SPECIFICATION WSS-M4D582-A2 Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 2 of 3 Specimens with shorter d
7、imensions 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 1.74 +/- 0.03 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 127 MPa (ISO R 527-1/ASTM D
8、 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 11 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 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2
9、mm specimen, 10 specimens for each test) 3.5.5.1 At 23 +/- 2 C 7.4 kJ/m2 3.5.5.2 At -40 +/- 2 C 6.8 kJ/m2 The 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, tes
10、t can be conducted outside, but within 5 s. 3.5.6 Heat Deflection Temperature, min (ISO 75-1, 80 x 10 x 4.0 +/- 0.2 mm specimen, flatwise) 3.5.6.1 At 1.82 MPa 200 C 3.5.6.2 At 0.45 MPa 215 C 3.5.7 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. After heat aging test
11、 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) 3.5.7.1 Impact Strength, Izod Change +/- 15% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.5.7.2 Tens
12、ile strength at Change +/- 25% (Test Method per para 3.5.6.1) ENGINEERING MATERIAL SPECIFICATION WSS-M4D582-A2 Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 3 of 3 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in
13、meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.5-6.5 -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, max After 48 h at 23 +/- 2 C 1.0% 5.2.2 Post Shrinkage, max (Separate specimens required for each test) After 48 h at 80 C 0.2% After 30 minutes at 120 C 0.2% 5.3 RECYCLING CODE
