1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2016 07 05 Revised See Summary of revision J. Souza, SA 2006 04 05 Revised Corrected test methods in para 4.5.4 and 4.5.5 T. Covert 1996 06 13 Activated T. Covert Controlled document at www.MATS.com Copyright 2016, Ford Global Technolo
2、gies, LLC Page 1 of 6 TUBING, SILICONE (VMQ), HIGH TEMPERATURE, HOT WSS-M2D486-A AIR RESISTANT 1. SCOPE The material defined by this specification is a long life, high temperature oil resistant, ozone resistant, moderate to low pressure silicone rubber hose with ability to service low temperature do
3、wn to -40 C. 2. APPLICATION This specification was released originally for material used in connectors for the engine charge air and or Turbo Charged connections. The tubing is not recommended for engine coolant or engine oil. The hose construction shall consist of silicone rubber coated on woven ar
4、amid (Nomex) cloth. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specif
5、ication is listed on the drawing, CAD file, or other documents. The list of approved sources is located within Ford at or available externally through a Ford Materials Engineer. 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to te
6、sting in a controlled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.3 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms from initial material approval shall constitu
7、te the reference standard and shall be kept on file at the designated material laboratory. The material supplier shall ensure that all future material supplied to the specification shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same condition
8、s. 3.4 SAMPLE SIZE Refer to Table 1 for number of samples required for each test to establish conformance to specification limits 3.5 MATERIAL TESTING 3.5.1 Preparation of Test Specimens ENGINEERING MATERIAL SPECIFICATION WSS-M2D486-A Copyright 2016, Ford Global Technologies, LLC Page 2 of 6 Wheneve
9、r possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimens 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
10、 +/- 0.2 mm 3.6 ORIGINAL PROPERTIES 3.6.1 Density 1.11 - 1.35 g/cm3 (ISO 1183, Method A/ASTM D 297) 3.6.2 Hardness, Durometer A 40 - 55 (ISO 868/ASTM D 2240) 3.6.3 Tensile Strength at Break 6 MPa min (ISO 37/ASTM D 412, Die C, 500 mm/minute test speed) 3.6.4 Elongation at Break 200% min (ISO 37/ASTM
11、 D 412, Die C, 500 mm/minute test speed) 3.6.5 Tensile Modulus at 100% Elongation 0.86 MPa min (ISO 37/ASTM D 412, Die C, 500 mm/minute test speed) 3.6.6 Tear Strength 9 kN/m min (ISO 34, Method B, procedure (a)/ ASTM D 624, Die B) 3.6.7 Low Temperature Brittleness pass (ISO 812, Type B specimen/AST
12、M D 2137, Method A) 9.3.2, non-brittle after 3 min at -55 C 3.6.8 Ozone Resistance (FLTM BP 101-01, Procedure A) “0“ Rating 3.6.9 Compression Set 50% max (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 22 h at 175 +/- 2 C) 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air
13、changes/h, 168 h at 175 +/- 2 C) 3.7.1 Hardness Change +10 3.7.2 Tensile Strength Change +30% max 3.7.3 Elongation Change -40% max 3.7.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATION WSS-M2D486-A Copyright 2016, Ford Global Techn
14、ologies, LLC Page 3 of 6 3.8 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 175 +/- 2 C) 3.8.1 Hardness Change +20 3.8.2 Tensile Strength Change -40% max 3.8.3 Elongation Change -50% max 3.8.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9 I
15、MMERSION IN OIL IRM 901 (ISO 1817/ASTM D 471, 168 h at 23 +/- 2 C) 3.9.1 Hardness Change 0 to -10 3.9.2 Tensile Strength Change -20% max 3.9.3 Elongation Change -20% max 3.9.4 Volume Change 0 to +15% 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10 SILICON
16、E VOLATILES 0.65% max (FLTM AV 102-01, as received at Ford Motor Company) NOTE: For engine applications the percent of silicone shall not be greater than 0.65%. A silicone percentage greater than 0.65 may cause the emissions oxygen sensor to operate inaccurately. 3.11 FINISHED PART REQUIREMENTS 3.11
17、.1 Burst Strength I.D. Minimum Burst Range Strength 0 up to 75 1.00 MPa 75 up to 100 0.69 MPa 100 up to 125 0.62 MPa 3.11.2 Heat Aged - Dry air Oven (70 h at 225 C +/- 3 C) 3.11.2.1 Burst Strength Change -20% Max 3.11.3 Heat Aged - Dry air Oven (48 h at 225 C +/- 3 C) 3.11.3.1 Weight change -7.5% Ma
18、x ENGINEERING MATERIAL SPECIFICATION WSS-M2D486-A Copyright 2016, Ford Global Technologies, LLC Page 4 of 6 3.11.4 Adhesion 1.0 kN/m Min (ASTM D 413, Strip Specimen Type A) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of
19、this specification. Contact for questions concerning Engineering Material Specifications. 4.1 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES VMQ (ISO 1043) 4.2 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design o
20、r Product Development, and Materials Engineering. The supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested mater
21、ial samples must be available for review upon request and kept for a minimum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.3 SUPPLIERS ONGOING RESPONSIBILITY
22、All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier shall not
23、ify the affected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specifications, all sa
24、mples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.4 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the
25、materials addressed by this document. The restrictions are identified in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. ENGINEERING MATERIA
26、L SPECIFICATION WSS-M2D486-A Copyright 2016, Ford Global Technologies, LLC Page 5 of 6 Table 1: Minimum Sample Size 5. SUMMARY OF REVISIONS 2016 07 05 Added approved sources Added conditioning and test conditions Added para sample size Initial Approval New Manufacturing Location for Previously Appro
27、ved Material Para. Test Min Lots Specimens per Lot Total Test Specimens Lots Specimens per lot Total Test Specimens 3.6.1 Density 1 3 3 1 3 3 3.6.2 Hardness, Durometer A 1 5 locations 1 1 5 locations 1 3.6.3 Tensile Strength at Break 3 5 15 1 5 5 3.6.4 Elongation at Break 3 5 15 1 5 5 3.6.5 Tensile
28、Modulus at 100% 1 10 10 1 5 5 3.6.6 Tear Strength 1 3 3 1 3 3 3.6.7 Low Temperature Brittleness 1 5 5 3.6.8 Ozone Resistance 1 3 3 1 3 3 3.6.9 Compression Set 1 3 3 1 3 3 3.7 Heat Aging Performance, 168h at 175C 3.7.1 Hardness Change 1 5 locations 1 1 5 locations 1 3.7.2 Tensile Strength Change 1 5
29、5 1 5 5 3.7.3 Elongation Change 1 5 5 1 5 5 3.7.4 Visual Evaluation 1 1 1 1 1 1 3.8 Heat Aging Performance, 1000h at 175C 3.8.1 Hardness Change 1 5 locations 1 3.8.2 Tensile Strength Change 1 5 5 3.8.3 Elongation Change 1 5 5 3.8.4 Visual Evaluation 1 1 1 3.9 Immersion in Oil IRM 901 3.9.1 Hardness
30、Change 1 5 locations 1 3.9.2 Tensile Strength Change 1 5 5 3.9.3 Elongation at Break 1 5 5 3.9.4 Volume Change 1 1 1 3.9.5 Visual Evaluation 1 1 1 3.10 Silicone Volatiles 1 3 3 3.11 FINISHED PART REQUIREMENTS 3.11.1 Burst Strength 1 5 3.11.2 Heat Aged - Dry air Oven, 70 h at 225C 3.11.2.1 Burst Stre
31、ngth Change 1 5 3.11.3 Heat Aged - Dry air Oven, 48 h at 225 C 3.11.3.1 Weight change 1 5 3.11.4 Adhesion 1 5 ENGINEERING MATERIAL SPECIFICATION WSS-M2D486-A Copyright 2016, Ford Global Technologies, LLC Page 6 of 6 Updated 3.6.2 Hardness, Durometer A range from 40+/-5 to 40 55. Removed Immersion in M7C36-A fluid Removed ESB-M9P1-A from Ozone Resistance method Added para. Material Identification for recycling purpose Added approval of materials Added suppliers ongoing responsibility Added restricted substance management standard Added Table 1
