1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 04 2017 06 27 Editorial Corrected footer A. Collins, NA 2016 07 05 Revised See Summary of revision J. Souza, SA 1996 06 13 Activated T. Covert Controlled document at www.MATS Copyright 2017, Ford Global Technologies, LLC Page 1 of 6 TUBIN
2、G, 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 down to -40 C. 2. APPLICATION
3、 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 aramid (Nomex) cloth. 3. REQU
4、IREMENTS 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 specification is listed on the dr
5、awing, 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 testing in a controlled envir
6、onment 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 constitute the reference standard a
7、nd 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 conditions. 3.4 SAMPLE SIZE Refer to
8、 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 2017, Ford Global Technologies, LLC Page 2 of 6 Whenever possible, all test specim
9、ens 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 +/- 0.2 mm 3.6 ORIGINAL PR
10、OPERTIES 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 D 412, Die C, 500 mm/minut
11、e 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/ASTM D 2137, Method A) 9.3.2,
12、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 changes/h, 168 h at 175 +/-
13、 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 2017, Ford Global Technologies, LLC Page 3 of 6 3.
14、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 IMMERSION IN OIL IRM 901 (IS
15、O 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 SILICONE VOLATILES 0.65% max (FLTM
16、 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 3.11.1 Burst Strength I.D. Mini
17、mum 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% Max ENGINEERING MATERIAL SPEC
18、IFICATION WSS-M2D486-A Copyright 2017, 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 this specification. Contact
19、 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 or Product Development, and
20、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 material samples must be availab
21、le 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 All materials must be equiv
22、alent 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 notify the affected Supplier T
23、echnical 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 samples tested to the specifi
24、cations 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 materials addressed by this
25、 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 MATERIAL SPECIFICATION WSS-M2D486-
26、A Copyright 2017, 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 Approved Material Para. Test Min
27、 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 Modulus at 100% 1 10 10 1 5
28、 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 5 1 5 5 3.7.3 Elongation Ch
29、ange 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 Change 1 5 locations 1 3.9.
30、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 Strength Change 1 5 3.11.3 Heat
31、 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 2017, 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
