91430 SPS cover edited - Electronic Fasteners Inc

TABLE 20LOW-TEMPERATURE IMPACT PROPERTIES OF SELECTED ALLOY STEELScomposition, %heat temperature*impact energy,transitionft.-lbtemp.quenching tempering(50%temp. temp. Hardness brittle)AISI no. C Mn Ni Cr Mo F+ F Rc –300°F –200°F –100°F O°F 100°F °F4340 0.38 0.77 1.65 0.93 0.21 1550 400 52 11 15 20 21 21 –600 48 10 14 15 15 16 –800 44 9 13 16 21 25 –1000 38 15 18 28 36 36 –1301200 30 15 28 55 55 55 –1854360 0.57 0.87 1.62 1.08 0.22 1475 800 48 5 6 10 11 14 –1000 40 9 10 13 18 23 –101200 30 12 15 25 42 43 –1104380 0.76 0.91 1.67 1.11 0.21 1450 800 49 4 5 8 9 10 –1000 42 8 8 10 12 15 601200 31 5 11 19 33 38 –504620 0.20 0.67 1.85 0.30 0.18 1650 300 42 14 20 28 35 35 –800 34 11 16 33 55 55 –1000 29 16 34 55 78 78 –1200 19 17 48 103 115 117 –4640 0.43 0.69 1.78 0.29 0.20 1550 800 42 16 17 20 25 27 –1000 37 17 22 35 39 69 –1901200 29 17 30 55 97 67 –1804680 0.74 0.77 1.81 0.30 0.21 1450 800 46 5 8 13 15 16 –1000 41 11 12 15 19 22 –1200 31 11 13 17 39 43 –8620 0.20 0.89 0.60 0.68 0.20 1650 300 43 11 16 23 35 35 –800 36 8 13 20 35 45 –201000 29 25 33 65 76 76 –1501200 21 10 85 107 115 117 –1958630 0.34 0.77 0.66 0.62 0.22 1575 800 41 7 12 17 25 31 01000 34 11 20 43 53 54 –1551200 27 18 28 74 80 82 –1658640 0.45 0.78 0.65 0.61 0.20 1550 800 46 5 10 14 20 23 –1000 38 11 15 24 40 40 –1101200 30 18 22 49 63 66 –1408660 0.56 0.81 0.70 0.56 0.25 1475 800 47 4 6 10 13 16 –1000 41 10 12 15 20 30 –101200 30 16 18 25 54 60 –9076