1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 21 N-STATUS No Replacement Named C. Mracna, NA 2004 10 14 Revised Removed Inactive WSB-M2D280-A6; Inserted 3.0; Deleted 3.1, 3.2, 3.2, 3.11, 3.12.4 1992 04 08 Released NB00I10043054180 K. P. Minnich L. Graham Printed copies are uncontr
2、olled Copyright 2009, Ford Global Technologies, LLC Page 1 of 4 SILICONE ELASTOMER (VMQ), INHERENTLY LUBRICATED WSB-M2D280-A5 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification are either inherently lubricated or non-lubricated silicone elastomers. 2. APPLICATION This
3、 specification was released originally for materials used for molded electrical connector seals when exposed to environmental temperatures of -65 to +200 C. It is not recommended for interior applications and brake fluid environments. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIAL
4、S Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MATERIAL TESTING 3.4.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimens
5、cut from molded test sheets manufactured from the same material and with equivalent cure to molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 ORIGINAL PROPERTIES 3.5.1 Density, g/cm31.04 - 1.10 (ISO 1183, Method A/ASTM D 297) 3.
6、5.2 Hardness, Durometer A 13 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.3 Tensile Strength, min 2.0 MPa (ISO 37/ASTM D 412, Die C) 3.5.4 Elongation at Break, min 500% (Test Method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONWSB-
7、M2D280-A5 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 3.5.5 Modulus at 100% Elongation 0.2 MPa (Test Method according to para 3.5.3) 3.5.6 Tear Strength, kN/m, min 3.0 (ISO 34, Method B, procedure (a)/ASTM D 624, Die C) 3.5.7 Brittleness Point, max -65 C
8、 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.5.8 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.5.9 Compression Set, max 25% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 70 h at 150 +/- 2 C) 3.5.10 Dielectric Strength, min 14 kV/mm (IEC 243/ASTM
9、D 149 in insulating oil) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) 3.6.1 Hardness Change -5 to +10 3.6.2 Tensile Strength -30 Change, %, max 3.6.3 Elongation Change, -30 %, max 3.6.4 Modulus at 100% Elongation Change, % max - 3.6.5 Visual Evaluation No surfac
10、e tackiness or cracks when folded flat against itself. 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C) 3.7.1 Hardness Change -10 to +10 3.7.2 Tensile Strength -40 Change, %, max 3.7.3 Elongation Change, -30 %, max 3.7.4 Modulus at 100% Elongation Change, %, max -
11、ENGINEERING MATERIAL SPECIFICATIONWSB-M2D280-A5 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 4 3.7.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.8 IMMERSION IN OIL NO.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.8.
12、1 Hardness Change 0 to - 12 3.8.2 Tensile Strength -30 nge, %, max 3.8.3 Elongation Change, -30 %, max 3.8.4 Modulus at 100% Elongation Change, %, max - 3.8.5 Volume Change -0 to +15 3.9 IMMERSION IN METHANOL (ISO 1817/ASTM D 471, 168 h at 23 +/- 2 C) 3.9.1 Hardness Change -5 to +10 3.9.2 Tensile St
13、rength -20 Change, %, max 3.9.3 Elongation Change, -20 %, max 3.9.4 Modulus at 100% Elongation Change, %, max -30 3.9.5 Volume Change, % -10 to +20 3.9.6 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10 LUBRICANT BLEED A test slab observed 24 h after molding mus
14、t show evidence of lubricant bleed. ENGINEERING MATERIAL SPECIFICATIONWSB-M2D280-A5 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this
15、specification. 5.1 For information on currently approved service fluids and other materials required for use in this specification contact: Materials Laboratory 15/GM-D01-D Body & Chassis Engineering Research & Engineering Center Materials and Corrosion Ford Motor Company Ltd. Ford Motor Company Lai
16、ndon, Basildon P.O. Box 2053 Essex SS15 6EE, England Body Engineering, Room 1064 Dearborn, MI 48124 (313) 323-1477 Materials Engineering Product Engineering Office Ford Motor Co. of Australia, Ltd. Princes Highway, Norlane Victoria 3214, Australia 5.2 SILICONE VOLATILES 0.6% (FLTM AV 102-01, as received at Ford Motor Company) 5.3 RECYCLING CODE SAE or VMQ OPTIONAL VMQ
