1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 13 N-STATUS No Replacement Named C. Mracna, NA 2004 07 13 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.14 then recalculate the loss in reflectance. 3.12 FOAM Densified skin should be removed. Whenever sufficient sample cannot be ob
2、tained from the part, equivalent 50 mm thick slab samples may be used. Cut slab samples for tests at least 13 mm away from the densified skin. 3.12.1 Cell Structure Homogenous, with no objectionable voids or solid spots which would be evident by finger compression of the painted skin, or visual exam
3、ination before or after exposing the assembly to one hour at 100 +/- 2 C. 3.12.2 Tensile Strength, min 207 kPa (ISO 1798/ASTM D 3574, Test E) 3.12.2.1 Elongation, min 100% 3.12.3 Tear Resistance, min 350 N/m (ISO DIS 8067/ASTM D 3574, Test F) 3.12.4 Compression Set, max 40% (ISO 1865, Method A/ASTM
4、D 3574, Test D, 50% constant deflection and shall be computed on the original sample thickness) 3.12.5 Density, Core, min As specified on (ISO 845/ASTM D 3574, Test A) the engineering drawing (kg/m3) 3.13 ASSEMBLY 3.13.1 Resistance to Heat Aging (ISO 188/ASTM D 145, Type IIA, 150 +/- 50 air changes
5、per h, minimum space of 2L/100 cm2specimen, 7 d at 100 +/- 2 C) Visual Deterioration, min Rating 4 (AATCC Evaluation Procedure 1/ ISO 105-A02) ENGINEERING MATERIAL SPECIFICATIONWSB-M2D203-A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4 After exposure, the
6、material shall show no evidence of tackiness, spewing, or excessive loss of grain, or exhibit staining, color tone change or change in hue, in excess of specified rating. Any spotty or nonuniform staining or discoloration shall be cause for rejection. In addition, the assembly shall not shrink or ex
7、pand to the extent of causing unsightly wrinkles, pull outs, loss of surface grain or design features in any portion. The foam shall not lose adhesion or delaminate from the retainer in any area of foam retainer contact before or after the test. The foam shall not blister or delaminate at the foam-s
8、kin interface. 3.13.2 Cold Impact The skin surface shall show no evidence of cracking after the test. The impact test shall be conducted on the original assembly, and after exposing the assembly for 7 days at 100 +/- 2 C. The impact test shall be conducted at the top or functional surface (the exact
9、 location shall be as specified on the engineering drawing). Test Method: The samples should be conditioned for a minimum of 6 h at -30 C prior to impacting. Remove from the cold box and immediately (from 8 to 10 s) drop the rubber ball from the height of 610 +/- 5 mm on the assembly. The rubber ball shall weigh 4.54 kg, be 127 mm in diameter and 60 +/- 5 durometer A hardness. 3.13.3 Resistance to Deterioration (FLTM BO 112-01, Method A) The foam and the painted skin must not deteriorate, blister, crack or discolor. 3.13.4 Flammability (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute
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