1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2000 09 26 Revised Updated A. Cockman 1989 08 29 NE01 - E - 10000474 - 048 Revised Title & Scope, was polyester cloth 1989 05 08 NE01 - E - 1 0000474 - 042 Released Printed copies are uncontrolled Page 1 of
2、4 Copyright 2000, Ford Global Technologies, Inc. DIAPHRAGM CLOTH, POLYAMIDE, HYDROGENATED WSE-M99H140-A NITRILE RUBBER (HNBR) COATED BOTH SIDES 1. SCOPE The material defined by this specification is a polyamide (nylon) cloth of good quality and uniform composition coated on both sides with a fuel, a
3、n d ozone resistant hydrogenated nitrile rubber. It is usually furnished molded to a desired shape, but may be sheet stock. 2. APPLICATION This specification was released originally as the diaphragm for the distributor vacuum advance. 3. REQUIREMENTS Ma terial specification requirements are to be us
4、ed for initial qualification of materials. 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to the Companys Quality System Requirements. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms established for initial approval shall constitu
5、te the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspon d to the reference standard when tested under the same conditions. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are
6、based on material conditioned in a controlled atmosphere of 23 +/ - 2 C and 50 +/ - 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. 3.4 CONSTRUCTION The overall construction (base fabric and rubber) must be such as to mee
7、t the requirements of this specification and the requirements of th e engineering drawing. ENGINEERING MATERIAL SPECIFICATION WSE-M99H140-A Page 2 of 4 Copyright 2000, Ford Global Technologies, Inc. 3.5 THICKNESS 0.45 +/ - 0.050 mm (ASTM D 751) 3.6 BURSTING STRENGTH, min 3.0 MPa (ASTM D 751) 3.7 STI
8、FFNESS (ASTM D 747, at 30 deg angle, 2.8E - 3 N.m bending moment, 3.2 mm specimen span) Fill 22 - 35 Warp 2 2 - 35 3.8 ADHESION (ASTM D 751) Attempt to separate coating from the fabric must always result in a cohesive failure. 3.9 OZONE RESISTANCE, max Rating 0 (FLTM BP 101 - 01, Procedure A, 9.5 mm
9、 mandrel) 3.10 PERMEATION No bubbles (FLTM BZ 104 - 02 ) The elapsed time of the first bubble to break free from the surface on the specimen shall not be less than 15 min. 3.11 HEAT AGED (ASTM D 573, 168 h at 125 +/ - 2 C) 3.11.1 Bursting Strength Change, max - 5 % (Test acc. to 3.6) 3.11.2 Stiffnes
10、s (T est acc. to 3.7) Fill 18 - 32 Warp 30 - 46 3.12 HEAT AGED (ASTM D 573, 1000 h at 125 +/ - 2 C) 3.12.1 Bursting Strength Change, max TBD (Test acc. to 3.6) ENGINEERING MATERIAL SPECIFICATION WSE-M99H140-A Page 3 of 4 Copyright 2000, Ford Global Technologies, Inc. 3.12.2 Stiffness (Test acc. to 3
11、7) Fill TBD Warp TBD 3.13 IMMERSION IN ASTM FUEL C (ASTM D 471, 70 h at 23 +/ - 2 C) 3.13.1 Bursting Strength Change, max - 5 % 3.13.2 Stiffness (Test acc. to 3.7, except total testing time must not exceed 10 min after removal from fuel) Fill 12 - 24 Warp 24 - 36 3.13.3 Adhesion (Test according to
12、3.9) Attempt to separate coating from the fabric must always result in a cohesive failure. 3.14 IMMERSION IN 85 % ASTM FUEL C + 15 % METHANOL (ASTM D 471, 70 h at 23 +/ - 2 C) 3.14.1 Thickness Change, max + 40 % 3.15 LOW TEMPERATURE RESISTANCE (FLTM BN 102 - 01, Procedure A, 5 h at - 40 C) 3.15.1 Af
13、ter Immersion in ASTM Fuel C No cracks 3.16 IMMERSION IN OXIDIZED GASOLINE (SOUR GAS) (FLTM AZ 105 - 01, 168 h at 60 +/ - 2 C each cycle, PN 90) Test Method: Using reflux con densing equipment immerse the specimens in 90 PN (Peroxide Number) sour fuel at 60 +/ - 2 C for 68 to 92 h. Dry out in the co
14、nvection oven for 4 h at 100 +/ - 2 C. Re - immerse the same specimens in the 90 PN sour fuel at 60 +/ - 2 C for additional 68 to 9 2 h. The total time of test shall equal 168 h. Change peroxide solution every 48 h. Dry specimens for 4 h at 100 +/ - 2 C. Repeat above for 3 cycles and determine the f
15、ollowing properties. 3.16.1 Bursting Strength Change, max - 65 % (Test acc. to 3 .6) ENGINEERING MATERIAL SPECIFICATION WSE-M99H140-A Page 4 of 4 Copyright 2000, Ford Global Technologies, Inc. 3.16.2 Stiffness (Test acc. to 3.7) Fill 24 - 36 Warp 17 - 29 3.16.3 Adhesion (Test according to 3.9) Attem
16、pt to separate coating from the fabric must always result in a cohesive failure. 3.16.4 Visual Evaluation No surface tackines s or cracks when folded flat against itself. 3.17 SOURCE IDENTIFICATION Each diaphragm shall have the suppliers identification marks permanently affixed. 3.18 SUPPLIERS RESPO
17、NSIBILITY All materials supplied to this specification 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 under this specification, whether or not such changes affect the materials abil
18、ity to meet the specification requirements, the Supplier shall notify the affected Purchasing, and Materials Engineering activities (with reasons) of the proposed changes. Upon notification of the Company, further instructions will be provided. Note: Suppliers should be prepared to provide test data
19、 and samples demonstrating compliance to this specification, if requested. Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in Restri cted Substance Management Standard WSS - M99P9999 - A1. 4. APPR
20、OVAL OF MATERIALS Materials defined by this specification for direct supply to the Company must have prior approval. Certain materials subcontracted by part suppliers may also require prior appr oval. These include materials critical to the Companys business for regulatory, safety, environmental or
21、compatibility requirements or contractual agreements. Suppliers desiring approval of their materials shall first obtain an expression of interest fr om Purchasing, Design or Materials Engineering activity. Upon request, 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 wit h all the requirements of this specification.
