1、MIL-T-l6420K(SH) AMENDMENT 1 16 September 1988 MILITARY SPECIFICATION t TUBE, COPPER-NICKEL ALLOY, SEAMLESS AND WELDED (COPPER ALLOY NUMBERS 715 AND 706) This amendment forms a part of MIL-T-l642OK(SH), dated 14 April 1978, and is approved for use within the Naval Sea Systems Command and is availabl
2、e for use by all Departments and Agencies of the Department of Defense. PAGE 3 3.1.3: Delete and substitute: “3.1.3 Cleanliness. The inner and outer surface of the tubes shall be delivered clean, free of dirt, oils, grease, acid, chips, carbonaceous material, free carbon, sulfur bearing compounds an
3、d any other foreign matter that render the tubes unfit for their intended use. Contaminants such as sulfur or sulfur- bearing compounds, carbon or carbon compounds from lubricants used in forming, machining, or other processing and marking materials used for in-process identi- fication shall be remo
4、ved from the material prior to any heat treatment. Tubing shall be bright annealed in an inert or reducing atmosphere to produce a clean surface or cleaned after heat treatment. All trace of acid or abrasive shall be removed following cleaning. AMSC N/A FSC 4710 DISTRIBUTION STATEMENT A, Approved fo
5、r public release; distribution is unlimited. 1 of 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-Iblr20K (I) lr7 W 999990b 0272237 B m HIL-T-l642OK(SH) AMENDMENT 1 PAGE 14 Add new category to table XII1 as follows: I Categories I Defects I I Major: I 111 I Tubes not clean J “- Preparing activity: Navy - SH (Project 4710-N006) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
