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 6110-01-004-2398
NSN 5945-00-272-8958
NSN 6645-01-334-7326
NSN 5915-01-207-7019
NSN 5855-01-426-5589
NSN 5985-01-597-0041
NSN 5920-01-604-9045
NSN 5998-01-005-6316
NSN 5999-00-221-6559
NSN 5945-00-353-9623
NSN 6610-00-530-3955
NSN 5895-01-300-5766