1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.13 & 4 1991 09 30 Revised C01089489 Not To Be Used For New Design Was 4 pages 1987 04 14 Released SM/ER4522TC Printed copies are uncontrolled Copyright 2006, Ford Global Technologies,
2、LLC Page 1 of 3 HOSE- SILICONE (VMQ) RUBBER, REINFORCED- ESD-M96D7-A2 VACUUM COLLAPSE RESISTANT, MEDIUM TEMPERATURE RESISTANT NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an internally reinforced silicone rubber hose resistant to collapsing under vacuum and ca
3、pable of continuous operations at 150 C. It is also capable of withstanding short-term excursions to 200 C. Resistance to prolonged exposure to oils and fuel cannot be assumed. 2. APPLICATION The material was released originally for use as a connecting hose between turbochargers and intake manifolds
4、 on Diesel engines, or as specified on the Engineering Drawing. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 HOSE CONSTRUCTION The hose shall
5、consist of a Silicone rubber inner tube and outer cover with one or more layers of knitted, woven or braided reinforcing fabric. Hoses produced by extrusion or by a wrapping process are acceptable. 3.5 MATERIAL TESTING Whenever possible, all test specimens shall be die-cut from the finished parts an
6、d buffed or slit to the required thickness where necessary. When not feasible, specimens cut from molded test slabs manufactured from the same material with an equivalent state of cure shall be used. The test slabs shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm. 3.6 ORIGINAL
7、 PROPERTIES- COVER AND TUBE 3.6.1 Hardness, International 70-85 IRHD (ASTM D 1415) 3.6.2 Hardness, Durometer A 70-85 (ASTM D 2240, instantaneous plied-up specimens) ENGINEERING MATERIAL SPECIFICATION ESD-M96D7-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of
8、 3 3.6.3 Tensile Strength, min 7.0 MPa (ASTM D 412, Die C) 3.6.4 Elongation at Break, min. 250% (ASTM D 412, Die C) 3.6.5 Modulus at 100% Elongation, min 2.0 to 4.0 MPa (ASTM D 412, Die C) 3.6.6 Tear Strength, min. 15 kN/m (ASTM D 624, Die B) 3.6.7 Compression Set, max. 15% (ASTM D 395, Method B, 22
9、 h at 100 +/- 2 C) 3.7 HEAT AGED- COVER AND TUBE (ASTM D 573, 1000 h at 150 +/- 2 C) 3.7.1 Hardness International, Change +/-10 IRHD 3.7.2 Hardness, Durometer A Change +/- 10 3.7.3 Tensile Strength, Change max -25% 3.7.4 Elongation at Break, Change max -50% 3.7.5 Modulus at 100% Elongation, Change,
10、max +70% 3.8 HEAT AGED- COVER AND TUBE (ASTM D 573. 168 h at 200 +/- 2 C) 3.8.1 Hardness, International, Change +/-10 IRHD 3.8.2 Hardness Durometer A Change +/- 10 3.8.3 Tensile Strength, Change max -25% 3.8.4 Elongation at Break, Change max. -50% 3.8.5 Modulus at 100% Elongation, +70% Change max 3.
11、9 BURST STRENGTH (ASTM D 380, HOSE LENGTH 300 MM +/- 10 MM) 3.9.1 Original, min 1.5 MPa 3.9.2 Heat Aged according to para 3.7, max -35% 3.9.3 Heat Aged according to para 3.8, max -55% ENGINEERING MATERIAL SPECIFICATION ESD-M96D7-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technolo
12、gies, LLC Page 3 of 3 3.10 FLEXIBILITY at -40 C No breaks or cracks Test Method: Condition a 300 mm straight length of hose for 24 h at -40 C then bend the hose around a similarly conditioned mandrel 10X the nominal Outside Diameter of the hose. Bending shall be completed within 10 seconds. 3.10.1 Original 3.10.2 Heat Aged according to para 3.7 3.10.3 Heat Aged according to para 3.8 3.11 VACUUM COLLAPSE RESISTANCE, max 10% Test Method:- T.B.E. 5kPa Vacuum at 200 +/- 2 C 3.12 COVER ADHESION, min 1.5 kN/m (ASTM D 413, strip specimen, type A)
