1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 22 N-STATUS No approved sources C. Mracna, Na 2006 02 02 Revised Error in paragraph 3.12, this update to correct that error L. Hess 1998 06 01 Activated L. Hess Printed copies are uncontrolled Copyright 2009, Ford Global Technologies,
2、LLC Page 1 of 2 POLYURETHANE FOAM, OPEN CELL - RETICULATED, WSS-M2D498-A1 13 CELLS/10 MM POLYURETHANE FOAM, OPEN CELL - RETICULATED, WSS-M2D498-A2 18 CELLS/10 MM NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is a completely open cell, reticulated polyurethane fo
3、am with a 97% void-volume relationship. 2. APPLICATION These specifications were released originally for material used where a completely open cell construction is needed, such as a filter in the fuel vapor storage dust box. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material
4、 suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). A1 A2 3.4 DENSITY, kg/m331.6 - 35.5 26.5 - 30.9 (ISO 845/ASTM D 3574, Test A) 3.5 TENSILE STRENGTH, kPa, min 122 117 (ASTM D 3574, Test E) 3.6 ELONGATION AT BREAK, %, min 219 2
5、90 (Test according to para 3.2) 3.7 TEAR RESISTANCE, N/m, min 817 617 (ASTM D 3574, Test F) 3.8 COMPRESSION SET, %, max 25 18 (ISO 1856, Method A/ASTM D 3574, Test D, 22 h at 70 C, 50% deflection Ct calculation, 3 specimens min) 3.9 HEAT AGING (ISO 2440/ASTM D 3574, Test K, 22 h at 140 +/- 2 C) Tens
6、ile Strength Change, %, max 40 30 (Test according to para 3.2) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D498-A1/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 A1 A2 3.10 COLD FLEXIBILITY AT -40 C No cracking No cracking Test Method: Condition 3 specimens 1
7、2.7 x 50 x 200 mm for 5 - 6 h in a cold chamber maintained at -40 C. Without removing from chamber, bend the specimen 180 over a temperature conditioned 12.7 mm diameter mandrel. 3.11 COMPRESSION DEFLECTION STRESS (ISO 3386/1, 100 x 100 x 50 mm specimen size, 100 +/- 20 mm/minute test speed, 3 speci
8、mens min) At 25% Compression, kPa, min 2.3 0.95 At 65% Compression, kPa, min 3.7 3.1 3.12 CELL STRUCTURE 9.8 - 13.8 14.8 18.8 (Cells/linear 10 mm or as specified on the engineering drawing.) The cell structure must be homogeneous, with no large voids or solid spots. It shall be free from internal de
9、fects, such as cold shuts, folds, laps and tears. It must be 100% open cell. 3.13 OZONE RATING 0 0 (FLTM BP 101-01) 3.14 CHEMICAL RESISTANCE No surface tackiness or evidence of foam deterioration Test Method: Immerse 50 x 25 x 3.2 mm foam specimens in Fuel B for 22 h at room temperature. 3.15 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute 100 mm/minute
