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 2 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECI
2、FICATION) NUMBER: CEMS GT-28 TITLE: SAE J400 Gravelometer Rating Standard Maximum Allowable Paint Chipping Damage 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 VER
3、IFIED FOR CURRENT REVISION This specification may involve 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 a
4、pplicability of regulatory limits prior to use. Change Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This is a method for determining the allowable damage or minimum adhesion (paint retention) after gravelometer chipping. 2.0 A
5、LLOWABLE DAMAGE The figures shown above are representations of Figures 4B, 4A, and 2A of the SAE Chipping Rating Standards EA-400. Chipping damage more severe than that shown in a figure should be reported as less than that figure number, i.e., 4B, or 4A, or 2A. Damage more severe then that shown in
6、 the figure is a failure criteria for those painted products whose material specifications reference this specification and one of these Figure numbers, to describe the minimum allowable amount of paint retention, after gravelometer testing. Copyright Navistar International Corporation Provided by I
7、HS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-28 TITLE: SAE J400 Gravelometer Rating Standard Maximum Allowable Paint Chipping Damage CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outsi
8、de Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar, Inc. AUGUST 2009 Page 2 of 2 3.0 APPLICATION Figure 4B is applicable to all painted metallic parts having thickness greater than 0.142 inch, (9
9、 gage) or 3.5 mm. Engineering drawing-painted part requirement will be to CEMS G-5 and/or TMS-9009. Figure 4A is applicable to all painted sheet metal and thermoplastic parts having thickness less than 0.142 inch, (9 gage) or 3.5 mm. Engineering drawing-painted part requirement will be to CEMS G-5 a
10、nd/or TMS-9008 and/or TMS-9009. Figure 2A is applicable to all painted fiberglass reinforced-plastic (FRP) parts. Engineering drawing-painted part requirement will be to CEMS G-5 and/or TMS-9005. 4.0 REPORT Report whether the paint passes or fails this test. SAE Chipping Rating Standards EA-400 is available from: Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
