1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 24 Revised Format Change Only 2002 06 13 Activated B. Hennessey Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 3 HOSE, AIR CONDITIONING REFRIGERANT (ALL RUBBER) WSS-M96D25-A5 RESISTANT, LOW-MED
2、IUM PRESSURE 1. SCOPE The materials defined by this specification is a seamless elastomer (IIR)/high tensile polyester reinforcement/elastomeric (EPDM) covered refrigerant hose. 2. APPLICATION This specification was released originally for hose designed for use with Refrigerant R-134a and refrigeran
3、t oils that must be serviceable over an ambient temperature range of -40 C to +135 C, an operating temperature of -40 C to +125 C and a maximum operating pressure of 3.4 Mpa. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the
4、Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CONSTRUCTION The hose shall consist of a seamless smooth bore inner tube of butyl rubber reinforced with a high tensile ply or plies of polyester fabric bonded to the inner tube, and an EPDM rubber weather resistant outer
5、cover. The outer cover shall be perforated (pin pricked). 3.3 MOLDED TEST SPECIMEN/TEST SLABS 3.3.1 Preparation of Test Specimens-Butyl and EPDM Rubber Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimens cut from molded test slabs manufactured
6、 from the same material and with equivalent cure to molded parts are recommended. The test slabs shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm. Elastomer Elastomer (IIR) Core (EPDM) Cover 3.3.2 Density, g/cm3 1.18 - 1.24 1.11 - 1.17 (ISO 1183, Method A/ ASM D 297) 3.3.3 Har
7、dness, Durometer A 65 - 75 68 - 78 (ISO 868/ASTM D 2240, Instantaneous plied-up specimen. Hand held durometers shall not be used.) ENGINEERING MATERIAL SPECIFICATION WSS-M96D25-A5 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 Elastomer Elastomer (IIR) Core
8、 (EPDM) Cover 3.3.4 Tensile Strength, MPa, min 8.2 10.3 (ISO 37/ASTM D 412, Die C) 3.3.5 Elongation, % 225 200 (ISO 37/ASTM D 412 Die C). 3.3.6 Ozone Resistance, max - Rating 0 (ASTM D 1171, Method A, 70 h at 50 pphm) 3.4 HEAT AGED PROPERTIES - 125 C (ISO 188/ASTM D 573, 1000h) Hardness Change, max.
9、 - +10 Tensile Strength Change, % max. - -20 Elongation Change, % max. - -45 3.5 DIMENSIONS The hose shall conform to the dimensions and tolerances specified in Table 1. Measurement shall be made in accordance with ASTM D 380. Table 1 All Rubber Hose Material Hose Size (mm) Min Inside Diameter mm Ma
10、x Inside Diameter mm Min Outside Diameter mm Max Outside Diameter mm Concentricity TI R mm 10 10.1 10.9 21.5 23.0 0.76 16 15.7 16.8 26.3 27.4 0.76 19 18.9 19.9 31.2 32.2 0.76 3.6 ADHESIONS, min (ASTM D 413, ring specimen, Type A) 3.6.1 Tube to Reinforcement 31 N min 3.6.2 Reinforcement to Cover 22 N
11、 min 3.7 WEIGHT LOSS, max (After 8 h at 70 +/- 2 C) 0.5% ENGINEERING MATERIAL SPECIFICATION WSS-M96D25-A5 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.8 IDENTIFICATION The hose shall be identified as follows: a) Hose supplier identification code. b) Hos
12、e I.D. in millimeters c) Four digit date code d) Color of letter Yellow or White. The following code format is recommended, but not mandatory: G 2 01 Where: G = Plant Designation 2 = Year (single digit) 01 = Week (two digit number) These markings shall appear at intervals not greater than 305 mm. Th
13、e markings shall not be soluble in water, automatic transmission fluid or fluids used in the engine compartment and shall withstand normal handling without smearing. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this sp
14、ecification. 4.1 For information on currently approved refrigerant for use in this specification contact: Materials Technology Center 15/GM P.O.E.E. Ford Motor Company 21500 Oakwood Blvd Laindon, Basildon Dearborn Essex SS15 6EE, England MI 48124-4091 Materials Engineering Product Engineering Office Ford Motor Co. of Australia, Ltd. Princes Highway, Norlane Victoria 3214, Australia 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSE IIR,PET,EPDM
