1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 30 N-STATUS Inserted 3.0; Deleted 3.12, 3.13 for curved glass, see Engineering Drawing.) Warp: When measured with glass in a free state on a plane surface, shall not accumulate to more than a total of 0.8 mm for each lineal 305 mm of
2、glass based on the major dimension; e.g., not more than 2.3 mm warp will be allowed in a part 914 mm long. Tong Kinks: On concealed edges, shall not exceed 0.8 mm within any 51 mm increment of edge length. No other kinks permitted. 3.3 GLASS GRADING AREAS For purposes of inspection to these specific
3、ations, sidelites, backlites and moon roofs are divided into two zones or grading areas. These areas are designed “B“, the entire exposed glass area; and “C“, the covered or concealed border area. ENGINEERING MATERIAL SPECIFICATION ESB-M28G15-A1/A3 Printed copies are uncontrolled Copyright 2006, For
4、d Global Technologies, LLC Page 3 of 6 3.4 GLASS IMPERFECTIONS Those described in para 3.5 are maximum permissible. No one piece of glass shall contain all of these defects and those present shall be scattered so there is no appreciable interference with normal vision. 3.5 MANUFACTURING IMPERFECTION
5、S, TOLERANCES For definitions of float glass imperfections, see para 3.1.6 of ESB-M99P10-A. Type Area “B“ Bubbles (entrapped) max, or One 3.0 mm dia or two 1.5 mm with 305 mm min separation. Bubbles(open), max, or Two 1.5 mm dia with 305 mm min separation. Equivalent blisters, max, or One 5.1 mm x 1
6、3 mm or two 3.0 mm x 0.8 mm with 305 mm min separation. Seeds, max Four 0.76 mm dia with 305 mm min separation. Stones None. Cullet chips fused to surface Not permitted if visible using standard inspection method. Top and bottom specks and bulls eye Shall not be evident at an angle greater than 55
7、between line of sight and glass surface. Bloom Not permitted if visible using standard inspection method. Pinholes and burn marks, max Less than 0.5 mm not considered a defect. 1.0 mm dia allowed. No more than one 1.0 mm pinhole per any 0.09 m2 area. Three 1.0 mm dia pin holes allowed per part. Scra
8、tches, digs, rubs and crush Light scratches, digs, rubs and crush which can be detected only by close scrutiny are permitted in reflective float glass. Typical limiting sample approved by BEPE shall be available for reference purposes. Mottle, haze, banding and comets Shall be equivalent or better t
9、han that shown in master reference samples. Blobs Not permitted if visible using standard inspection method. In “C“ area, any of the listed defects are acceptable provided they do not affect the function of the glass. ENGINEERING MATERIAL SPECIFICATION ESB-M28G15-A1/A3 Printed copies are uncontrolle
10、d Copyright 2006, Ford Global Technologies, LLC Page 4 of 6 3.6 EDGE CONDITION Shall flake chips up to 0.8 mm in thickness (depth), 19.1 mm long, and 10.2 mm wide permitted. Only one maximum permitted; no vee chips permitted. 3.7 PHYSICAL REQUIREMENTS The material defined by these specifications sha
11、ll meet all requirements described under Item 3, Table 1, ANSI Z26.1, 1977, January 26, 1977, as supplemented by Z26.1a, July 3, 1980, and incorporated by reference in FMVSS 205, February 23, 1984. Compliance shall be demonstrated by conformance to a control plan developed by the glass manufacturer
12、and approved by B however, abrasive cleaners will mar or scratch coating. ENGINEERING MATERIAL SPECIFICATION ESB-M28G15-A1/A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 6 of 6 5.2 INSIDE FROST REMOVAL Normal plastic ice scraper used with moderate pressure will not mar the inside surface film; however, metal objects used in this fashion will permanently deface the surface. 5.3 SAMPLE PREPARATION Heat treated samples are prepared by placing 100 x 100 mm samples, coated side up, in a muffle type furnace set at 650 C for 10 min.
