1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 1 of 1 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECIF
2、ICATION) NUMBER: CEMS GT-4B TITLE: Color Stability Of Paint CURRENT ISSUE DATE: August 2009 WRITTEN/REVIEWED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE OF: August 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may invo
3、lve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to use. Change
4、 Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This is a method for evaluating the ability of a paint to retain its original color when subjected to over-drying. 2.0 APPARATUS Recirculating oven capable of maintaining the speci
5、fied temperature within + 3C (+ 5F). 3.0 MATERIAL Bonderite CD-10 or Bonderite 958 zinc phosphated steel panel, 100 x 150 mm (4 x 6 inches), available from Advanced Coatings Technologies, 273 Industrial Drive, Hillsdale, Michigan 49242. 4.0 PROCEDURE 4.1 Prepare two panels according to the procedure
6、 specified for the applicable grade in Test Method GT-13, Panel Preparation. 4.2 Dry the panels according to the oven drying procedure specified therein and cool to 21 to 27C (70 to 80F). 4.3 Select one of the panels and give it a second oven drying identical to the first oven drying procedure speci
7、fied in ”Panel Preparation 4.4 Evaluate the color stability of the paint by comparing the twice-dried panel with panel dried once. Make this comparison with the unaided eye using a reasonable intensity of diffused light, preferably northern sky light. The paint will pass if the twice-dried panel exhibits no appreciable color difference from the panel dried once. 5.0 REPORT Report whether the paint passes or fails this test. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
