1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 19 Re-Activated Still being used in North/South America Y. Bankoswki, NA 2009 07 28 N-STATUS No Replacement Named Y. Bankowski, NA 1966 12 22 Released AV2-298 Printed copies are uncontrolled Copyright 2010 Ford Global Technologies, LLC
2、 Page 1 of 5 POLYURETHANE (PUR) FOAM, FLEXIBLE, RESTRICTED FLOW ESA-M4D200-B 1. SCOPE The material defined by this specification is flexible polyether polyurethane foam. When uncompressed it allows no air flow due to a high percentage of closed cells and lack of interconnection between any remaining
3、 open cells. 2. APPLICATION This specification was released originally for material used as gasketing and seals for heater and air conditioning units. 3. REQUIREMENTS 3.1 RAW MATERIAL All tests to be performed on, or from 200 x 200 x 25 mm slabs of new uncompressed material, unless otherwise specifi
4、ed. 3.1.1 Color Charcoal 3.1.2 Density Cored 27 - 40 kg/m3 (ASTM D 3574) Uncored 40 - 56 kg/m3 3.1.3 Tensile Strength, min 69 kPa (ASTM D 3574) Elongation, min 125 % 3.1.4 Tear Resistance, min 175 N/m (ASTM D 3574) 3.1.5 Compression Set, max 15 % (ASTM D 3574, Method “B“, 50 % at 70 C, 22 h) 3.1.6 R
5、esistance to Deterioration No visible (FLTM BO 12-1, steps 2, 3, 4, degradation 6, 7 and 8) 3.1.7 Odor No offensive odor as received and during and after the deterioration test (para 3.1.6). ENGINEERING MATERIAL SPECIFICATIONESA-M4D200-B Printed copies are uncontrolled Copyright 2010 Ford Global Tec
6、hnologies, LLC Page 2 of 5 3.1.8 Cold Flexibility at - 40 C No cracking Test Method: Condition 3 specimens, 25 x 50 x 200 mm for a minimum of 5 h in a cold chamber maintained at - 40 C. Without removing from chamber, bend the specimen 180 degrees around a temperature conditioned mandrel equivalent i
7、n diameter to the thickness of the foam. 3.1.9 Compression Force Deflection, max 6.5 kPa (ASTM D 3574, Test C, except 65 % compression, 20 - 50 mm thick specimen compressed at 254 mm/minute) Specimens are not to be preflexed prior to test. Reading to be taken immediately upon reaching the 65 % defle
8、ction level. There must be no audible cracking or snapping indicating rupture of closed cells when foam is compressed to 65 % deflection. 3.1.10 Ozone Rating Rating 1 (FLTM BP 101-01) 3.1.11 Flammability Self-extinguishing (FLTM BN 24-2, without the lot (Se/NBR) sampling plan) 3.1.12 Cell Structure,
9、 min 10 cells/10 mm The material shall have a homogenous fine cell structure free from large voids or solid spots. 3.1.13 Restriction to Air Flow No sudden decrease in pressure, but rather a gradual one. After 30 minutes the pressure shall be 10 kPa min. Test apparatus shall consist of a 7.6 L paint
10、 pressure tank with a 6.4 mm pipe at least 150 mm long extending from the top outlet. Atop the 6.4 mm pipe shall be a standard 25 mm pipe flange (29 mm diameter opening). The tank must be equipped with an air pressure gage having 69 kPa total scale graduated in 0.7 kPa units. Place a test piece of f
11、oam 150 x 150 x 25 mm over the 25 mm pipe flange. Place a piece of 1.6 mm screening on top of the test piece. Bolt another 25 mm pipe flange to the one attached to the pressure pot, with the test piece and screening in between. Tighten the bolts until each is secure, but avoid tightening any one mor
12、e than the other. Introduce a pressure of 35 kPa into the pressure pot, allow the pressure to build up slowly. Turn off the air supply. Observe the pressure drop over a 30 minute time period. At the end of this period, residual pressure in the pot must be a minimum of 10 kPa. ENGINEERING MATERIAL SP
13、ECIFICATIONESA-M4D200-B Printed copies are uncontrolled Copyright 2010 Ford Global Technologies, LLC Page 3 of 5 3.1.14 Water Absorption at 75 % Compression, 280 % by Weight, max Test Method: 25 x 25 x 150 mm samples to be submerged in a 300 x 300 x 250 mm tank under 125 mm of water, using 6.4 mm sc
14、reening to keep samples positioned. Samples to be weighed and then compressed 75 % (see attached drawing) prior to immersion. At the completion of 24 h immersion at 23 2 C, remove for 5 0.5 minutes on a hardware cloth. Reweigh and calculate average absorption for 3 samples: B - A x 100 % water Absor
15、ption = - A A = Original weight B = Weight after immersion 3.2 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan as described therein is required for material/source approval. Appropriate statistical tools must be
16、 used to analyze process/product data so that variation in the final product is continuously reduced. 3.3 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any ch
17、ange in the properties, composition, construction, color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the aff
18、ected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the mat
19、erials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M99P9999-A1. ENGINEERING MATERIAL SPECIFICATIONESA-M4D200-B Printed copies are uncontrolled Copyright 2010 Ford Global Technologies, LLC Page 4 of 5 4. APPROVAL OF MATERIALS Materials defined by
20、 this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit
21、 to the affected Materials Engineering activity a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of this specification (test results, not nominal values), the material
22、designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessment of suitability for intended processes and/or applications. Upon approval, the material will be added to the Engine
23、ering Material Approved Source List. 5. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE PUR ENGINEERING MATERIAL SPECIFICATIONESA-M4D200-B Printed copies are uncontrolled Copyright 2010 Ford Global Technologies, LLC Page 5 of 5
