1、 NON-PRODUCTION MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes 2010 03 09 N-STATUS No replacement named L. Sinclair, NA 1988 10 01 Page 1 of 1 SEALER - PLATE/FIN EVAPORATOR SILICATE BASE W-M3B70-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this sta
2、ndard is a silicate base compound intended for chemical bonding to a freshly chromated aluminum substrate. 2. APPLICATION: This material is used as a final, integral part of the plate- fin evaporator coating system, to impart a hydrophilic character to the surface. It may be employed for the treatme
3、nt of other products of the same general description and/or material. 3. REQUIREMENTS: 3.1 SPECIFIC GRAVITY AT 60 F (15.6 C): 1.43-1.47 (ASTM D 1298) 3.2 NON-VOLATILES: 48% min (24 hrs. at 220 F (104 C) Convection Oven) 3.3 SILICATE TO HYDROXIDE RATIO: 1.20-1.35 (FLTM AQ 109-1) (by weight) 3.4 PH OF
4、 1% SOLUTION: 10.4-11.0 (ASTM E 70) 3.5 PERFORMANCE: This material, when used with the related approved materials which implement W-PL 55-04 and applied as prescribed on W-PL 55-04, must meet requirements as defined by Engineering Material Specification ESH-M10P7 and facilitate meeting wet airside pressure drop requirements as stipulated on the applicable engineering drawing. 4. STANDARD PARAGRAPHS: The following standard paragraphs as defined in Manufacturing Standard MBX are herewith made a part of this standard: C1, C2 (initial approval only), P1, P2, P3, R1, R2.
