Historical Development of Military Specifications on Impregnation

Date	Process	Materials	Process & Materials
1945	OD-3618 (No description available)	AN-I-36 (No description available)
08/07/1950			MIL-I-6869 Impregnation for Aluminum Alloy and Magnesium Alloy Castings
12/04/1951			MIL-I-6869A Impregnation for Aluminum Alloy and Magnesium Alloy Castings
02/20/1952	MIL-I-7878 Process for Impregnation of Porosity in Castings
11/15/1952	MIL-I-17414 (ships) Process for Impregnation of Porosity in Copper Base Alloy Castings
03/03/1953		MIL-I-17563 Impregnation Compounds Copper Alloy Castings
12/16/1954		MIL-I-13857 (ORD) Impregnation of Metal Castings
02/02/1956	MIL-STD-276 Impregnation of Porous Nonferrous Metal Castings
03/12/1957		MIL-I-17563A
09/30/1960			MIL-I-6869B
05/12/1966			MIL-I-6869C
06/20/1966		MIL-I-13857B (MR)
01/14/1971			MIL-I-6869D
04/14/1985		MIL-I-17563B Impregnants for Aluminum, Copper, Iron, Magnesium, Zinc alloy castings
09/18/1992	MIL-STD-276A Impregnation of Porous Metal Castings and Powdered Metal Components
12/30/1992		MIL-I-17563C Impregnants for Cast or Powdered Metal Components

As of 8/02