Steel, astm a331, 4140, 4150, 8645, or steel qq-s-637, 1117; investment casting; mil-s-22141, ic 4140, ic 8640, tensile test is not appicable, casting per mil-c-6021, class 2, grade b; brazing material is brazing alloy, qq-b-650, bcu-1; harden and temper to rockwell a73-76.5; for 1117, carburize lg. At 1575-1600 degrees f. To case depth of 0.005-0.008, oil quench, temper 30 min. To file hardness; manganese phosphate or zinc phosphate, mil-p-16232, class 1, type m or z; brazed joint will withstand an axial load of 1000 lbs. Without evidence of failure.
NSN 5965-00-330-9672
NSN 5895-01-102-9612
NSN 5945-01-316-6692
NSN 5835-01-328-6626
NSN 5930-00-336-4615
NSN 2925-01-197-7864
NSN 6130-01-163-6967
NSN 5935-00-773-3316
NSN 5895-01-634-0630
NSN 6135-01-648-2284
NSN 6240-01-621-2774
NSN 5945-01-613-5159