1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 11 19 N-STATUS No replacement named J. Crist, NA 2005 05 26 Revised Inserted 3.0; Deleted 3.3 & 4 1977 08 31 Released (was XH-M4DX1-A) ESH-M4D380-A, R-22/CH8G-MF-566078 Printed copies are uncontrolled Copyright 2009, Ford Global Technolog
2、ies, LLC Page 1 of 2 POLYURETHANE FOAM, LOW DENSITY ESH-M4D380-A SKINNED - FOAM IN PLACE POLYURETHANE FOAM, LOW DENSITY SKINNED - ESH-M4D380-B FOAM IN PLACE - WITH BIOCIDE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is a flexible low density polyurethane foam.
3、 2. APPLICATION These specifications were released originally for material used as a foamed in place gasket used as a seal on the various air doors within the heater and air conditioning system. The ESH-M4D380-B specification is used where resistance to bacteria/fungus is required. 3. REQUIREMENTS 3
4、0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 FREE RISE TEST SPECIMENS (150 x 150 x 20 mm, with skin removed unless otherwise specified.) 3.1.1 Density, min 32
5、kg/m(ASTM D 3574) 3.1.2 Tensile Strength, min 100 kPa (ASTM D 3574, 13 mm thick sample) 3.1.3 Elongation at Break, min 175% (ASTM D 3574, 13 mm thick sample) 3.1.4 Compression Force Deflection, max 1.5 kPa (ASTM D 3574, 20 x 125 x 125 mm sample, 25% compression at 50 mm/min) 3.1.5 Compression Set, m
6、ax 15% (ASTM D 3574, Method “B“, 22 h, 70 +/- 1 C, 50% constant deflection, 25 x 50 x 50 mm, calculate the constant deflection compression set as a percentage of the original deflection.) 3.1.6 Tear Resistance, min 500 N/m (ASTM D 624, Die “C“, 13 mm thick sample) ENGINEERING MATERIAL SPECIFICATIONE
7、SH-M4D380-A/BPrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.1.7 Aged Deterioration None (FLTM BO 112-01, sample size 25 x 25 x 75 mm) 3.1.8 Cold Flexibility Must pass Test Method: Condition 3 specimens 50 x 150 x 4 +/- 1 mm for a minimum of 4 h in a cold
8、chamber maintained at -40 +/- 2 C. Without removing the specimen from the chamber, bend the specimens 180 over a temperature conditioned mandrel 6 mm in diameter. All 3 samples must not crack to pass this test. 3.1.9 Cell Structure Must pass Fine, uniform cell structure with no solid spots when view
9、ed at 10x magnification. There shall be no voids larger than 2 mm. No more than two voids, 1.5 - 2 mm, are permissible in any 1 cm2area. 3.2 FINISHED PART 3.2.1 Density 50 - 80 kg/m3(ASTM D 3574) 3.2.2 Compression Force Deflection 3 - 7 kPa (Para. 3.1.4) Change, max 50% (Age 70 h at 70 +/- 1 C) Test
10、 Method: Locate the compression deflection test areas noted on the engineering drawing. Support sample on 3 pin mounting fixture. Subtract the thickness of the metal, free of any foam, to obtain the thickness of the foam. Place a steel block (25 x 25 x 6 mm) ground and polished on top of the sample.
11、 Deflect the foam 25% (from thickness calculated above x 0.25) at a rate of 50 mm/min using a Link Spring Tester or similar device. 3.2.3 Cell Structure Must pass Fine, uniform cell structure with no solid spots when viewed at 10x magnification. There shall be no voids larger than 2 mm. No more than
12、 two voids, 1.5 - 2 mm, are permissible in any 1 cm2area. 3.2.4 Adhesion, min 200 N/m Test Method: Cut 4 sections 25 mm wide and no less than 100 mm long, from the test specimen. Do not use the molded edge. Separate approximately 25 mm of foam from the metal insert. Place the loosened foam in the up
13、per jaws and the bare metal insert in the lower jaws of a tensile tester equipped with a suitable recorder. Adjust the tensile tester to pull at 50 mm/min. Report the average of the 4 test samples. Examine the separation zone of the 4 samples. If any of the 4 show “clean“ steel across the sample, for any length, indicating a lack of adhesion for that total width, the part shall be considered to have failed this test and shall be so reported. 3.2.5 Bacteria/Fungus Resistance, ESH-M4D380-B only Must pass (ES-D8VH-19A672-AA)
