1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 19 N-STATUS No replacement named J. Cirst, NA 2006 03 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1991 07 17 Released NB00I10043054109 M.A. Myers Printed copies are uncontrolled Copyright 2010, Ford Global Technologies
2、 LLC Page 1 of 4 POLYPROPYLENE (PP) SHEET, 40% LONG GLASS WSB-M4D818-A2 FIBER REINFORCED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a sheet composed of a homopolymer polypropylene matrix, with 40% by weight, long glass fiber reinforcement. These sheets are
3、specifically designed for thermoplastic stamping. 2. APPLICATION This specification was released originally for material used to manufacture battery trays. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard R
4、equirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on test specimens machined from thermoformed test sheets. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2
5、 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm 3.4.2 Glass Fiber Content 39 - 45% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) 3.4.3 Density 1.18 - 1.28 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.4.4 Tensile Strength at Max Load, min 70 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0
6、/- 0.2 mm specimen, 5 mm/minute test speed) 3.4.5 Flexural Modulus, min 4.3 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D818-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologie
7、s, LLC Page 2 of 4 3.4.6 Shear Modulus at 23 C 1.12 - 1.86 GPa (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 from the center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temp
8、erature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.4.7 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256,
9、 Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.4.7.1 At 23 +/- 2 C 58.0 kJ/m23.4.7.2 At -40 +/- 2 C 58.0 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 t
10、he cold box, if not possible, test can be conducted outside, but within 5 s. 3.4.8 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.4.8.1 At 1.82 MPa 135 C 3.4.8.2 At 0.45 MPa 147 C 3.4.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h,
11、1000 h at 125 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.9.1 Tensile Strength Change +/- 25% (Test Method per para 3.4.4) 3.4.9.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.4.7.1, specimens to be notched before heat agi
12、ng) 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 3.2 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATIONWSB-M4D818-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4
13、 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 2.0-5/C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.30% 5.3 RECYCLING CODE SAE PP-GF40 OPTIONAL ENGINEERING MATERIAL SPECIFICATIONWSB-M4D818-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
