1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 03 31 Revised Para 3.0 inserted; para 3.1, 3.2, 3.12, 3.13 and 4 deleted 1992 02 21 NB00I10043054160 Released TRB, R.D. Moore Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 3 MIRROR, GLASS, PRISMAT
2、IC, SILVER BACKING, WSB-M26G4-C (FLAT), INTERIOR MIRROR, GLASS, SILVER BACKING, (FLAT), WSB-M26G5-C INTERIOR 1. SCOPE The materials defined by these specifications are float glass mirrors. The reflective surface is produced by depositing silver on the second surface of the glass. The silver surface
3、shall be protected with a suitable paint coating. 2. APPLICATION WSB-M26G4-C: This specification was released originally for material used for non-parallel interior rear view mirrors. It provides a two-position type of mirror which can be mechanically selected for either “day“ or “night“ driving con
4、ditions. WSB-M26G5-C: This specification was released originally for material used for interior sun visor vanity mirrors. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materia
5、ls (WSS-M99P1111-A). 3.3 PHYSICAL AND OPTICAL REQUIREMENTS The glass mirrors must meet all requirements of the following test standards in the European market. 85/205/EEC 71/127/EEC The above standards are equivalent to each other. The glass mirrors must meet the requirements of the following standa
6、rds for the North American market. FMVSS 111 Compliance shall be demonstrated by conformance to a control plan developed by the glass mirror manufacturer and approved by the Product Development Materials Activity. ENGINEERING MATERIAL SPECIFICATION WSB-M26G4-C WSB-M26G5-C Printed copies are uncontro
7、lled Copyright 2004, Ford Global Technologies, LLC Page 2 of 3 3.4 DIMENSIONS 3.4.1 Glass Thickness Shall be specified on engineering drawing 3.5 DEFECTS The coated glass surface shall be free from noticeable defects, such as open pits. Light short finish, not in excess of the master sample, is acce
8、ptable. It may contain fine scattered seeds (bubbles) less than 0.41 mm diameter, and hairline scratches not grouped. The silver coating shall be free of pinholes. 3.6 REFLECTANCE, min (SAE J964) 3.6.1 WSB-M26G4-C 3.6.1.1 Day Position 80% of the light incident on the surface. 3.6.1.2 Night Position
9、4.0% of the light incident on the surface. 3.6.2 WSB-M26G5-C 80% of the light incident on the surface. 3.7 DISTORTION, max (FLTM BO 120-03) 3.7.1 Flat Glass, WSB-M26G4-C 2% 3.7.2 Flat Glass, WSB-M26G5-C 3% 3.8 CYCLING, min Four cycles (96 h) No evidence of discoloration, poor adhesion of the reflect
10、ive film to the glass, or loss of reflectivity in excess of 1%. Test Method: Two glass mirror blanks shall be placed in an oven at 70 +/- 1 C for a period of 4 h. On removal from the oven, the mirror assembly shall be placed immediately in a cold box at - 40 +/- 1 C for a period of 4 h. On removal f
11、rom the cold box, it shall be immediately placed vertically, in a humidity chamber at 95 - 100% relative humidity and 38 +/- 1 C for 16 h. ENGINEERING MATERIAL SPECIFICATION WSB-M26G4-C WSB-M26G5-C Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 3 3.9 SALT SPR
12、AY, min 96 h (ASTM B 117) WSB-M26G4-C and WSB-M26G5-C No more than 6 failed spots per 930 cm2of exposed surface which are visible to the unaided eye at normal reading distance, and no loss of reflectivity in excess of 1%. Test Method: Two glass mirror blanks shall be exposed to salt spray with the c
13、oated side exposed and inclined at an angle of 15 from the vertical. Samples shall be arranged to prevent contact with each other and to permit free settling of the fog on the coated surfaces for the specified minimum period. 3.10 QUALITY 3.10.1 WSB-M26G4-C; Surface finish shall be equivalent to tha
14、t of the approved master sample, and shall meet the requirements of ASTM C 1036 Type I, Class I q2 quality. Interior Mirror edges: . Shall have a frosted (non-glare) edge with a maximum surface roughness of 7.87 - 0 micrometers RMS, and no shiners or wheel skips. . The edge shall be either crowned o
15、r flat to convex with edge chamfers of 0.25 - 0.76 mm depth and height of 0.50 - 1.27 mm. . Front surface flake shell chips shall not be visible in the encased assembly, and second surface chips shall be a maximum of 1.8 mm. 3.10.2 WSB-M26G5-C The surface finish shall be equivalent to that of the ap
16、proved master sample, and shall meet the requirements of ASTM C 1036 Type I, Class I q2 quality. 3.11 OPTICAL CHARACTERISTICS 3.11.1 WSB-M26G4-C The finished mirror shall pass the following test for image resolution. Test method: When viewed in the normal operating position (at the distance of the mirror from the drivers eye), the angular separation of the mirror surfaces shall be sufficient so that only one of the two images can be resolved at one time.
