1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Para. No. Revisions 2014 09 04 N-Status Obsolete materials in 3.1. A. Wedepohl, NA 1978 07 14 Metricated and Retyped CE3H-RD782440-E 1976 05 15 Released CAF3-CR-773855E WP 3948-a Page 1 of 1 INK, MARKING ESE-M99P12-A NOT TO
2、BE USED FOR NEW DESIGN 1. SCOPE This specification defines the performance requirement of a marking ink applied to metal parts. 2. APPLICATION This specification was released originally for materials used in marking inks for lot coding catalytic converters. 3. REQUIREMENTS Test samples to be taken f
3、rom either component parts or steel panels run through the production equipment. 3.1 ENVIRONMENTAL TESTING Immediately after each of the environmental exposures, the ink must not show flaking, peeling, blistering, running, or any other effect that would render the ink printing illegible. Also after
4、slightly rubbing the sample with a dry cotton cloth the printing must still be decipherable. 3.1.1 Immersion in ASTM fuel for 1 h at 23 2C. 3.1.2 Immersion in ASTM oil #3 for 2 h at 121 3C. 3.1.3 Humidity cabinet for 24 h at 98 2 % relative humidity and 38 3C. 3.1.4 Hold the panel for 1 h at -40C th
5、en expose to heat for 1 h at 121 3 C. Repeat for 4 cycles. 3.1.5 Heat test - 15 minutes at 232 3C. 3.3 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes in formulation or processing shall not be made without prior approval as des
6、cribed in Supplier Procedure I-A. 4. APPROVAL OF SUPPLIERS Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/existing ES-M specification is contained in Supplier Procedure I-A. Approved new suppliers will be added to the Engineering Materials Approved Source List.
