MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel, 4340, astm a322 or a331, or steel, 4140h or 8645h, astm a304; preheat 900 to 1000 degrees f for 30 min prior to hardening; heat at 1475 to 1600 degrees f, quench in agitated oil 90 to 130 degrees f for of 3 min, air cool, temper 1hr at heat to hardness specified; brazew/brazing alloy, spec qq-b-650; finish 5.3.1.2 or 5.3.2.2 of mil-std-171; 5.250in l; 2.548 in w; 2.273 in dia
