1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 02 2017 02 27 Revised See summary of revisions A. Reaume/G. Kowalski, NA 2006 08 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.26 Global Technologies, LLC Page 1 of 6 HOSE, NON-REINFORCED RUBBER, FUEL/ALCOHOL RESISTANT, WSL-M96D33-A3
2、 CONDUCTIVE, LOW PERMEATING, FKM TUBE/ECO COVER 1. SCOPE This specification defines a conductive, non-reinforced barrier layer hose with good resistance to fuel/alcohol blends and low permeation. 2. APPLICATION This specification was released originally for fuel tank filler and vent hoses. 3. REQUIR
3、EMENTS 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 drawing, CAD file, or other documents. The list of approved sources is located within Ford at
4、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 environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the material should occur in
5、 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 and shall be kept on file at the designated material laboratory. The material supplier shall e
6、nsure 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 INITIAL QUALIFICATION Suppliers seeking approval to this specification must meet the initial qualification proces
7、ses that include evaluating materials and constructions according to the applicable Fuel System Design Specification (SDS) and individual Design Verification Methods (DVM). 3.5 LIMITATIONS Vapor lines can be either conductive or non-conductive. Liquid caring lines must be conductive. This material d
8、oes not contain UV stabilizers, long term exposure to direct sunlight will cause cracking. All components exposed to direct sunlight must contain UV stabilizers. ENGINEERING MATERIAL SPECIFICATION WSL-M96D33-A3 Copyright 2017, Ford Global Technologies, LLC Page 2 of 6 3.6 HOSE CONSTRUCTION The hose
9、shall consist of a smooth bore fluoroelastomer lined tube, a fuel resistant barrier layer and an epichlorohydrin cover. 3.7 ADDITIONAL REQUIREMENTS Requirements beyond those explicitly stated in this document and the material specification may be specified on the Engineering drawing, Engineering spe
10、cification (ES), performance specification, System Design Specification (SDS) and/or Attribute Requirement List (ARL). 3.8 PERFORMANCE CRITERIA Materials approved to this specification must also be approved to the fuel system polymeric materials performance standard: WSS-M98P14-A2 Tube Barrier Cover
11、 3.8.1 Hardness Durometer A 75 85 85 - 95 65 75 (ISO 868/ATM D2240 Instantaneous, plied up Specimen. Hand held Durometers shall not be used) 3.8.2 Tensile Strength, MPa, min 8.0 12.0 10.0 (ISO 37/ASTM D412, Die C 50 mm/minute test speed) 3.8.3 Elongation at Break, % min 225 400 250 (ISO 37/ASTM D412
12、, Die C) 3.8.4 Modulus at 100%, MPa, min 4.0 6.0 2.5 Elongation ISO 37/ASTM D412, Die C) 3.8.5 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 125 C) 3.8.5.1 Hardness Change, max +15 +10 +15 3.8.5.2 Tensile Strength Change, % max -10 % -35 % -10 % 3.8.5.3 Elongation Change, % max -
13、50 % -15 % -60 % 3.8.6 Burst Pressure (ASTM D380) Complete Construction Hose Size, (Approximate I.D.) Below 9.53, mm 1.02 MPA min 9.53 15.87, mm 0.68 MPa min 15.87 mm and larger 0.34 MPa min ENGINEERING MATERIAL SPECIFICATION WSL-M96D33-A3 Copyright 2017, Ford Global Technologies, LLC Page 3 of 6 Co
14、mplete Construction 3.8.7 Compression Set 75%, max (FLTM BP 108-6, 70 h at 100oC, 25% compression) 3.8.8 Electrical Resistance Surface resistivity (SAE J2260) less than or equal to 1 x 106 Ohms 3.9.9 Vacuum Collapse (SAE J30R11) Test Method: For straight hose, a 1 m length of hose or the assembly sh
15、all be held in a straight line. On preformed parts, the vacuum collapse test shall be performed on the finished part. No diameter shall decrease by more than 20 % during the application of vacuum for a minimum of 15 seconds and not more than 60 seconds. Hose sizes as listed below shall be subjected
16、to the corresponding vacuum pressure: Nominal hose ID 44.5 mm 10 kPa 20 % max 3.8.10 Ovality 75% min (Not applicable to hoses with I.D. greater than 16.28 mm, unless otherwise specified on engineering drawing) Ovality = I.D. minimum x 100 I.D. maximum 3.8.11 Resistance to Kinking Ball must pass free
17、ly (SAE J30, para 6.20) 3.8.12 Flammability Resistance, Cover Stock Only Self- extinguishing (ISO 3795) within 60 seconds 3.8.13 Hose Identification The colored tracer cord in the reinforcement of the hose may be used for source identification. The color shall be determined between Purchasing and th
18、e supplier. The word gas/fuel and the coding described below shall appear on the outer cover of the hose in contrasting color and repeated at intervals of 60 mm or less. Mandrel cured hose may be coded once per part. ENGINEERING MATERIAL SPECIFICATION WSL-M96D33-A3 Copyright 2017, Ford Global Techno
19、logies, LLC Page 4 of 6 The following format is recommended: a) Supplier identification code. b) Date of manufacture (week, year) and plant designation if supplier has more than one plant producing hoses to this specification. No space between letters. Mandatory on hoses longer than 80 mm only. c) F
20、ord trademark on hoses longer than 150 mm. d) All of the above printing shall be clearly and legibly printed letters of 4.5 - 6 mm in height and width. When hose is less than 80 mm long, width of letters may be reduced to 3 mm. The following code format is recommended, but not mandatory: G 2 01 Wher
21、e: G = Plant Designation 2 = Year (single digit) 01 = Week (2-digit number) 3.9 PERFORMANCE CRITERIA REPORT ONLY Materials approved to this specification must also be approved to the fuel system polymeric materials performance standard: WSS-M98P14-A2 Tube Barrier Cover 3.9.1 Hardness International R
22、eport Report Report (ISO 48/ASTM D1415, micro) 3.9.2 Original Breaking Strength and elongation at Break (Entire Hose Construction, 50 mm/minute) Test Method: Record the I.D. and O.D. of a 150 mm straight length of hose and clamp the hose on suitable fittings in a tensile testing machine to prevent p
23、ull-off. Apply gage marks or extensometers to the hose to measure elongation. Apply a load at a rate of 50 mm/minute until the hose ruptures. Record the force to break the hose and the elongation of the hose at break. Calculate the hose breaking strength by dividing the breaking force by the annular
24、 cross-sectional area of the hose wall. Median values are to be used for reported values 3.9.2.1 Breaking Strength Report, MPa 3.9.2.2 Elongation at Break Report, % 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this spe
25、cification. Contact for questions concerning Engineering Material Specifications. ENGINEERING MATERIAL SPECIFICATION WSL-M96D33-A3 Copyright 2017, Ford Global Technologies, LLC Page 5 of 6 4.1 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of i
26、nterest from Purchasing, Design or 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 Mat
27、erial Specification. Tested material 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. 4.2
28、SUPPLIERS ONGOING RESPONSIBILITY 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 req
29、uirements, the supplier shall notify 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 Engineerin
30、g Material Specifications, all samples 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. 4.3 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or
31、Company direction applies to the 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 GM
32、AP reporting. 4.4 GENERIC IDENTIFICATION AND MARKING OF ELASTOMERIC PRODUCTS (ISO 1043/11469) Report 5. SUMMARY OF REVISIONS 2017 02 27 Removed redundant tests with WSS-M98P14-A2 and referenced WSS-M98P14-A2 Removed WSS-M99P1111-A and added those requirements directly to this specification. o Para 3
33、.1 Approved sources o Para 3.2 Conditioning and test conditions o Para 3.3 Infrared spectrophotometry and/or thermal analysis o Para 4.1 Approval of materials o Para 4.2 Suppliers ongoing responsibility o Para 4.3 Restricted substance management standard Para 3.4 Added initial qualifications Para 3.
34、5 Added limitations Para 3.7 Added additional requirements Para 3.9 Added performance criteria report only Para 3.9.2 Add original breaking strength and elongation at break Para 4.4 Added generic identification and marking of plastic products ENGINEERING MATERIAL SPECIFICATION WSL-M96D33-A3 Copyrigh
35、t 2017, Ford Global Technologies, LLC Page 6 of 6 The following paragraphs are covered in WSS-M98P14-A2 Para 3.0 Removed standard requirements for production materials Para 3.8 Removed heat aged (1000 hours) Para 3.9 Removed immersion in fuel C Para 3.10 Removed immersion in 75% fuel C + 25% methano
36、l Para 3.14 Removed cold flexibility Para 3.15 Removed high temperature resistance Para 3.16 Removed ozone resistance Para 3.19 Removed fuel permeability resistance Para 3.21 Removed adhesion Para 3.23 Removed installation effort - ES requirement Para 3.24 Removed hose elongation 2006 08 31 Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.26 & 4
