1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2017 07 07 Editorial Corrected wording in Section 3.4 L. Click, NA 2006 09 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.10, 3.11 Fixed numbering 3.5 3.10 1996 11 12 Activated B. Hennessey Controlled document at www.MATS Copyright 2017,
2、 Ford Global Technologies, LLC Page 1 of 4 HOSE, LOW AND HIGH PRESSURE CLUTCH, RUBBER- WSS-M96D42-A REINFORCED, BRAKE FLUID DOT 4 AND SUPER DOT 4 (SAE J1704/ISO 4925) RESISTANT 1. SCOPE The material defined by this specification is a reinforced rubber hose, resistant to DOT 4 and Super DOT 4 brake f
3、luids and containing no extractable compounds that can cause swelling of hydraulic brake and clutch seals. The hose is not to be used for high pressure brake system hose applications. 2. APPLICATION This specification was originally released for hoses, used as low pressure hose between the reservoir
4、 and clutch master cylinders and high pressure hose between the clutch master cylinder and clutch actuation cylinder in non-petroleum brake fluid based systems. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PR
5、ODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 CONSTRUCTION AND MATERIAL The hose shall consist of an EPDM rubber inner tube and EPDM or Chloroprene outer cover with an internal layer of braid
6、ed reinforced textile capable of meeting the burst requirements as specified. 3.4 MATERIAL TESTING Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimen cut from molded test sheets manufactured from the same material and with equivalent cure to m
7、olded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 MATERIAL TESTING, ORIGINAL PROPERTIES, TUBE AND COVER MATERIAL TUBE COVER 3.5.1 Hardness, International 70 - 80 55 - 80 (ISO 48/ASTM D 1415) 3.5.2 Tensile Strength, MPa, min 12 10
8、 (ISO 37, Type 1 dumbbell) ENGINEERING MATERIAL SPECIFICATION WSS-M96D42-A Copyright 2017, Ford Global Technologies, LLC Page 2 of 4 TUBE COVER 3.5.3 Elongation at Break, %, min 150 140 (Test Method according to para 3.4.2) 3.5.4 Modulus at 100% Elongation, MPa min 2.5 2.0 (Test Method according to
9、para 3.4.2) 3.5.5 Tear Strength, N/cm, min 10 10 (ISO 34, Method B, Procedure (a) ASTM D 624, Die B) 3.5.6 Compression Set, %, max 40 40 (ISO 815/ASTM D 395 Method B except 25% compression, plied-up specimens, 22 h at 100 C +/- 1 C) 3.5.7 Ozone Resistance, max Rating max 0 (FLTM BP 101-01, Method B)
10、 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 100 C) Hardness Change, max +10 +20 (90 IRHD max) Tensile Strength Change, %, max -15 -15 Elongation at Break Change, %, max -35 -45 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 HEAT AGED
11、(ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 80 C) Hardness Change, max +10 +20 (90 IRHD max) Tensile Strength Change, %, max -20 -20 Elongation at Break Change, %, max -30 -50 (100% Elongation min) Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEE
12、RING MATERIAL SPECIFICATION WSS-M96D42-A Copyright 2017, Ford Global Technologies, LLC Page 3 of 4 3.8 IMMERSION BRAKE FLUID, DOT 4 (SAE J 1704/ISO 4925, 168 h at 100 C. Use current initial fluids to SA-M6C9103-A) TUBE 3.8.1 Hardness Change -5 3.8.2 Tensile Strength, %, max -20 3.8.3 Elongation at B
13、reak Change, %, max -30 3.8.4 Volume Change, %, max +5 3.9 IMMERSION BRAKE FLUID, SUPER DOT 4 (SAE J 1704/ISO 4925, 168 h at 100 C. Use current initial fluids to ESD-M6C57-A) TUBE 3.9.1 Hardness Change -5 3.9.2 Tensile Strength, %, max -25 3.9.3 Elongation at Break Change, %, max -35 3.9.4 Volume Ch
14、ange, %, max +15 3.10 FINISHED PART REQUIREMENTS 3.10.1 Burst Pressure, Low pressure hose 3.0 MPa, min (ASTM D 380) High pressure hose 20.0 3.10.2 Flexibility at -40 C No breaks or (FLTM BN 102-01, except use cracks mandrel 10 x nominal I.D.) TUBE 3.10.3 Brake Fluid Compatibility, %, max 0.05 vol. s
15、ediment (SAE J 1603, para 6.2, using DOT 4 fluid to SA-M6C9103-A and Super DOT 4 to ESD-M6C57-A) 3.10.4 Brake/Clutch Seal Compatibility, % -0.5 to +1.5 (FLTM BP 121-01, differential seal swell, using DOT 4 fluid to SA-M6C9103-A and Super DOT 4 to ESD-M6C57-A) 5. GENERAL INFORMATION The information g
16、iven below is provided for clarification and assistance in meeting the requirements of this specification. ENGINEERING MATERIAL SPECIFICATION WSS-M96D42-A Copyright 2017, Ford Global Technologies, LLC Page 4 of 4 5.1 For information on currently approved brake fluids for use in this specification co
17、ntact: Materials Laboratory 15/GM-DO1-D Fluids Materials Section Research & Engineering Center Coolant/Greases Ford Motor Company Ltd. Engine Engineering Laindon, Basildon P.O. Box 2053 Essex SS15 6EE 21500 Oakwood Boulevard England Dearborn, MI 48121, USA Material Engineering Production Engineering Office Ford Motor Co. Australia Ltd. Princes Highway, Norlane Victoria 3214, Australia TUBE COVER 5.2 Hardness Durometer A 70 - 80 65 - 75 (ISO 868/ASTM D 2240)
