1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 31 Revised Inserted 3.0; Deleted 3.1, 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 gl
2、ass 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. ENGINEERING MATERIAL SPECIFICATION ESB-M28G15-A4/A8 Printed copies are
3、 uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 6 3.4 GLASS GRADING AREAS For purposes of inspection to these specifications, 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“, t
4、he covered or concealed border area. 3.5 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. 3.6 MANUFACTURING IMPERFECTIONS,
5、 TOLERANCES For definitions of float glass imperfections, see para 3.1.6 of ESB-M99P10-A. Type Area “B“ Bubbles(entrapped), max One 3.0 mm dia or two 1.5 mm with 305 mm or min separation. Bubbles (open), max Two 1.5 mm dia with 305 mm min or separation. Equivalent blisters, max One 5.1 mm x 1.3 mm o
6、r two 3.0 mm x 0.8 or mm with 305 mm min separation. Seeds, max Four 0.76 mm dia with 305 mm min separation. Stones None. Cullet chips fused to Not permitted if visible using standard surface inspection method. Top and bottom specks and Shall not be evident at an angle greater bulls eye than 55 betw
7、een line of sight and glass surface. Bloom Not permitted if visible using standard inspection method. Pinholes and burn marks, Less than 0.5 mm not considered a max 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. ENGINEER
8、ING MATERIAL SPECIFICATION ESB-M28G15-A4/A8 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 6 Type Area “B“ Scratches, digs, rubs and Light scratches, digs, rubs and crush crush which can be detected only by close scrutiny are permitted in reflective float gla
9、ss. Typical limiting samples approved by BEPE shall be available for reference purposes. Mottle, haze, banding and Shall be equivalent or better than that comets shown in master reference samples. Blobs Not permitted if visible using standard inspection method. In “C“ area, any of the listed defects
10、 are acceptable provided they do not affect the function of the glass. 3.7 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. 3.8 PHYSICAL REQUIREMENTS The material defined by this specific
11、ation shall meet all requirements described under Item 2, Table 1, ANSI Standard Z26.1, 1977, January 26, 1977, as supplemented by Z26.1a, July 3, 1980, and incorporated by reference in FMVSS 205, February 2, 1984. Compliance shall be demonstrated by conformance to a control plan developed by the gl
12、ass manufacturer and approved by B however, abrasive cleaners will mar or scratch coating. 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.
