1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev.02 2017 02 27 Revised See summary of revisions A. Reaume/G.Kowalski, NA 2006 09 13 Revised Inserted 3.0; Deleted 3.1,3.2,3.3,3.5, Global Technologies, LLC Page 1 of 5 HOSE, REINFORCED RUBBER, FUEL/ALCOHOL RESISTANT, WSS-M96D33-A6 CONDUCTI
2、VE, LOW PERMEATING, THV INNER VENEER LINER/ECO/REINFORCEMENT/ECO COVER 1. SCOPE This specification defines a conductive, reinforced synthetic rubber hose with a conductive barrier layer on the inner diameter. The construction has low permeation rates and good resistance to fuel/alcohol blends. 2. AP
3、PLICATION This specification was released originally for fuel tank filler hoses. 3. REQUIREMENTS 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 drawi
4、ng, 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 environm
5、ent 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 and
6、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 INITIAL QUALIFICATION S
7、uppliers seeking approval to this specification must meet the initial qualification processes 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 ei
8、ther conductive or non-conductive. Liquid caring lines must be conductive. This material does 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 WSS-M96D33-A6
9、 Copyright 2017, Ford Global Technologies, LLC Page 2 of 6 3.6 HOSE CONSTRUCTION The hose shall consist of a smooth bore THV (tetrafluoroethylene hexafluoropropylene vinylidenefluoride) inner veneer, acting as a fuel barrier, an outer tube of epichlotohydrin rubber, one ply of braided, knit, or spir
10、al woven fabric, and an outer epichlorohydrin rubber 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 specification (ES), performance specification, System Design Sp
11、ecification (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 Veneer Tube Cover 3.8.1 Hardness Durometer A N/A 65 - 75 60 70 (ISO 868/ASTM D
12、2240 Instantaneous, plied up Specimen. Hand held Durometers shall not be used) 3.8.2 Tensile Strength, MPA min 12.0 6.9 5.5 (ISO 37/ASTM D412, Die C) 3.8.3 Elongation at Break, % min 300 300 200 (ISO 37/ASTM D412, Die C) 3.8.4 Modulus at 100%, MPa min 6.0 1.9 1.9 Elongation ISO 37/ASTM D412, Die C)
13、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 N/R +20 +25 3.8.5.2 Tensile Strength Change, % max N/R -10 -10 3.8.5.3 Elongation Change, %max N/R -60 -70 3.8.6 Burst Pressure (ASTM D380) Hose Size, (Approximate I.D.) Complete Construction
14、Below 9.53 mm 1.72 MPa min 9.53 15.87 mm 1.20 MPa min 15.87 mm and larger 0.34 MPa min ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Copyright 2017, Ford Global Technologies, LLC Page 3 of 6 Complete Construction 3.8.7 Compression Set 75% max (FLTM BP 108-6, 70 h at 100oC, 25% compression) 3.8.8
15、Electrical Resistance Surface resistivity (SAE J2260) less than or equal to 1 x 106 Ohms 3.8.9 Vacuum Collapse (SAE J30R11) Test Method: For straight hose, a 1 m length of hose or the assembly shall be held in a straight line. On preformed parts, the vacuum collapse test shall be performed on the fi
16、nished 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 to the corresponding vacuum pressure: Nominal hose ID 44.5 mm 10 kPa 20 % max 3.8.10 Ovality 75% min (Not
17、 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 freely (SAE J30, para 6.20) 3.8.12 Flammability Resistance, Cover Stock Only Self- extinguishing (ISO 3795) w
18、ithin 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 the supplier. The word gas/fuel and the coding described below shall appear on the outer cover of the hose
19、in contrasting color and repeated at intervals of 60 mm or less. Mandrel cured hose may be coded once per part. 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
20、specification. No space between letters. Mandatory on hoses longer than 80 mm only. c) Ford trademark on hoses longer than 150 mm. ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Copyright 2017, Ford Global Technologies, LLC Page 4 of 6 d) All of the above printing shall be clearly and legibly prin
21、ted 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 Where: G = Plant Designation 2 = Year (single digit) 01 = Week (2-digit number) 3.9 PERFORMANCE CRITERIA REPO
22、RT ONLY Materials approved to this specification must also be approved to the fuel system polymeric materials performance standard: WSS-M98P14-A2 Veneer Tube Cover 3.9.1 Hardness International Report Report Report (ISO 48/ASTM D1415, micro) 3.9.2 Original Breaking Strength and elongation at Break (E
23、ntire 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 pull-off. Apply gage marks or extensometers to the hose to measure elongation. Apply a load at a rate of 50
24、 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 cross-sectional area of the hose wall. Median values are to be used for reported values 3.9.2.1 Breaking
25、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 specification. Contact for questions concerning Engineering Material Specifications. 4.1 APPROVAL OF MATERIAL
26、S Suppliers desiring approval of their materials shall first obtain an expression of interest 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
27、 the test facility, demonstrating full compliance with all the requirements of the Material 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 Fa
28、ilure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.2 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Copyright 2017,
29、Ford Global Technologies, LLC Page 5 of 6 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 Technical Assistance (STA), Purchasing, and Mate
30、rials 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 specifications for Design Verification (DV), Productio
31、n 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 Company direction applies to the materials addressed by this document. The restrictions are identified in t
32、he 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. 4.4 GENERIC IDENTIFICATION AND MARKING OF ELASTOMERIC PRODUCTS (ISO 1043/11469) Report 5. SUM
33、MARY OF REVISIONS 2017 02 27 Removed WSS-M99P1111-A and added those requirements directly to this specification. o Para 3.1 approved sources o Para 3.2 conditioning and test conditions o Para 3.3 infrared spectrophotometry and/or thermal analysis o Para 4.1 Added approval of materials o Para 4.2 Add
34、ed suppliers ongoing responsibility o Para 4.3 Added restricted substance management standard Para 3.4 Added initial qualifications Para 3.5 Added limitations Para 3.7 Added additional requirements Para 3.8.8 Added Electrical resistance Para 3.9 Added performance criteria report only Para 3.9.2 Adde
35、d original breaking strength and elongation at break Para 3.6.2 Removed hardness, durometer D Para 4.4 Added generic identification and marking of elastomeric products The following paragraphs are covered in WSS-M98P14-A2 Para 3.8 Removed heat aged (1000 hours) Para 3.9 Removed immersion in fuel C 5
36、04 hours, veneer only Para 3.10 Removed immersion in fuel C 24 hours, cover only Pare 3.11 Removed immersion in Fuel C + 25% Methanol 360 hours, veneer only Pare 3.12 Removed immersion in Fuel C + 25% Methanol 24 hours, cover only Para 3.13 Removed resistance to oxidized fuel (sour gas) Veneer only
37、Para 3.16 Removed cold flexibility Para 3.17 Removed high temperature resistance Para 3.18 Removed ozone resistance Para 3.21 Removed fuel permeability resistance Para 3.22 Removed compression set Para 3.24 Removed adhesion Para 3.26 Removed installation effort Para 5.1 Removed heat age hose 1000 hours at TBDC 2006 09 13 Inserted 3.0; Deleted 3.1,3.2,3.3,3.5, & 4 1996 03 26 Revised
