1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 07 22 N-STATUS No Replacement Named Y. Bankowski, NA 2005 01 07 Revised Inserted 3.0; Deleted 3.4, 3.5 & 4 1969 03 12 Released ESA-M4D57-A CAX2-948108 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of
2、 3 POLYURETHANE (PUR) FOAM, OPEN FINE CELL ESA-M4D57-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an open, fine celled polyurethane foam. 2. APPLICATION This specification was released originally for material used as gasketing for brake vacuum boosters. Grad
3、e 1 Standard sealing applications Grade 2 Superior sealing with thin sections 3. REQUIREMENTS (Both grades, except as noted) 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1
4、111-A). 3.1 TEST SPECIMEN 3.1.1 Density (ASTM D 1564) Grade 1 27 - 35 kg/m3Grade 2 43 - 51 kg/m33.1.2 Tensile Strength, min 124 kPa (ASTM D 1564, Die A) 3.1.3 Elongation, min (ASTM D 1564, Die A) Grade 1 300% Grade 2 250% 3.1.4 Tear Resistance, min 0.5 kN/m (ASTM D 1564) 3.1.5 Compression Set, max 1
5、0% (ASTM D 1564, Method B, 22 h at 70 +/- 1 C, 50% constant deflection) ENGINEERING MATERIAL SPECIFICATIONESA-M4D57-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.1.6 Resistance to Deterioration No visible degradation (FLTM BO 012-01, steps 2, 3, 4 and 5
6、) Test part samples as received or die cut 100 x 100 mm specimens. 3.1.7 Odor No offensive odor, as received and during and after the deterioration test (para 3.1.6). 3.1.8 Cold Flexibility No cracking Test Method: Condition 3 specimens, 50 x 200 mm, for a minimum of 5 h in a cold chamber maintained
7、 at -40 C. Without removing from chamber, bend the specimens 180 over a temperature conditioned mandrel equivalent in diameter to the thickness of the foam. 3.1.9 25% Compression - Deflection (ASTM D 1564, 100 x 100 mm, samples, direct load reading) Grade 1 22 - 44 N Grade 2 36 - 58 N 3.1.10 Cell St
8、ructure, min 20 cells/10 mm Shall have a homogeneous, open, fine cell structure, with no large voids or solid spots. It shall be free from internal defects such as cold shuts, folds, laps, and tears. 3.1.11 Ozone Rating 0 (FLTM BP 101-01) 3.1.12 Color Charcoal 3.2 QUALITY CONFORMANCE - PARTS (Both g
9、rades, except as noted) Material from parts shall tested as follows: 3.2.1 Density (ASTM D 1564) Grade 1 27 - 35 kg/m3Grade 2 43 - 51 kg/m33.2.2 Compression Set, max 10% (ASTM D 1564, Method B, 22 h at 70 +/- 1 C, 50% constant deflection) ENGINEERING MATERIAL SPECIFICATIONESA-M4D57-APrinted copies a
10、re uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.2.3 Odor No offensive odor as received and during and after the deterioration test (para 3.1.6). 3.2.4 Cell Structure, min 20 cells/10 mm Shall have a homogeneous, open, fine cell structure, with no large voids or solid spot
11、s. It shall be free from internal defects such as cold shuts, folds, laps, and tears. 3.2.5 Color Charcoal 3.3 FLAMMABILITY, max 100 mm/minute (FLTM BN 024-02, without the lot sampling plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of the above maximum value.
