40 



HANDBOOK OF MECHANICAL DESIGN 

 CAST CARBON STEELS 



Chemical composition 



Mechanical properties 



Car- 

 bon, 

 per 

 cent 



0.11 

 0.11 



0.15 

 0.17 

 0.18 



0.20- 

 0.25 



0.19 



0.22 

 0.22 

 0.22 

 0.24 



Man- 

 ga- 

 nese, 

 per 



0.73 



0.81 

 0.67 

 0.83 



0.70- 

 0.80 



0.03 



0.70 

 0.68 

 0.67 

 0.78 



0.26 

 0.27 



0.27 

 0.27 

 0.27 

 0.28 



0.28 



0.25 0.68 



0.84 

 0.71 



0.72 

 0.75 

 0.69 

 0.65 



0.79 



Sili- 

 con, 

 per 

 cent 



0.27 

 0.40 



0.20 

 0.23 

 0.30 



0.25- 

 0.35 



0.32 

 0.28 

 0.34 

 0.28 



0.32 



0.37 

 0.41 



0.32 

 0.31 

 0.26 

 0.27 



Sul- 

 phur, 

 per 

 cent 



0.027 



Under 

 0.03 



0.031 



0.030 

 0.030 

 0.029 



0.034 

 0.034 

 0.032 

 0.032 



Phos- 

 phorus 

 per 

 cent 



Tensile 



strength, 



lb. per 



sq. in. 



Yield 

 point, lb. 

 per sq. in. 



0.028 



Under 

 0.03 



0.028 



0.024 

 0.025 

 0.024 



0.027 

 0.029 

 0.027 

 0.027 



62,000 

 64,000 

 73.000 



67,000 

 70,000 



70,000 

 71,500 

 74 , 500 



62,000 

 63 , 500 



71,000 

 72,000 

 73,500 

 71,000 



67,000 

 77,000 



77,000 



75,000 

 72,000 



82,500 

 74,500 

 76,000 

 74 , 000 



68,000 

 69,000 



75,000 

 76,000 

 84 , 000 



95,000 



108,000 



119,000 



130,000 



26,000 

 24.000 

 35,000 

 35,000 



35,000 



34,000 

 37,000 



36 , 500 

 46 , 500 

 48,000 



42,000 

 44,000 



37.000 

 43.000 

 43,500 



27,000 

 44,000 



43,000 



44.500 

 40 , 000 

 41,500 

 43,000 



42,000 

 43 , 500 



36,000 

 42,000 

 57,000 



68,000 



79,000 



90,000 



100,000 



Elon- 

 gation, 

 per 

 cent 



33.0 



13.2 

 28.2 

 29.5 

 31.0 



34.0 

 28.5 

 34.0 



14.0 

 26.5 



33.0 

 34.0 



32.0 



36.5 

 39.0 



33.0 

 32.5 

 33.0 

 28.0 



22.0 

 30.5 



33.0 

 32.9 



28.0 

 35.0 

 28.0 

 28.0 



33.3 



37.8 



19.5 

 25.5 

 30.0 



24.0 



19.0 



14.0 



9.0 



Re- 

 duc- 

 tion of 

 area, 

 per 

 cent 



36.0 

 30.0 

 53.0 

 59.5 

 54.0 



52.5 

 40.2 

 49.0 



18.6 

 31.6 



51.2 

 58.0 

 55.1 



59.8 

 67.0 



53.5 

 52.4 

 49.7 

 47.8 



33.0 

 51.0 



54.2 

 57.6 



47.7 

 45.7 

 44.8 

 42.0 



51.1 

 63.3 



29.0 

 31.5 

 65.0 



57.0 



46.0 



33.0 



18.0 



Im- 

 pact 



3.7' 



2.1« 



15.0' 



13.7' 



3.7'' 



15' 

 36' 



16/ 

 24/ 



26/ 



01« 

 64' 





Hard- 

 ness 

 num- 

 bers" 



20.1/ 

 32.6/ 



32.0/ 



34.0/ 



35. 5« 



37.5' 



45.5' 



126B 

 119B 

 116B 

 126B 



137B 

 139B 

 143B 



149B 

 149B 

 156B 



119B 

 136B 



136B 



133B 



163B 

 153B 

 156B 



156B 

 143B 

 160B 



192B 



220B 



238B 



250B 



Treatment of steel** 



Annealed in commercial furnace 

 As cast 



1475^. (800°C.) (6), furnace cooled 

 1650°F. (900°C.) (6), furnace cooled 

 1825°F. (995-0.) (6). furnace cooled 



Annealed 



1650°F. (900°C.) (5). furnace cooled 



Annealed 



As cast 



leoO-F. (870''C.), furnace cooled 



As cast 



1650°F. (900°C.) (1), air cooled 



16S0°r. (900°C.) (1), furnace cooled 



leSOT. (900''C.) (1). furnace cooled 



1700°F. (930°C.) (1), air cooled 



1600°F. C870''C.) (1). air cooled 



1200°F. (650<'C.) (1), air cooled 



1650°F. (gOO-C.) (3), air cooled 

 1650-1^. (OOO-C.) (3), air cooled 

 1650°F. (900°C.) (3), air cooled 

 1650°F. (900°C.), furnace cooled 



As received 



lOSOT. (900°C.) (1), air cooled; 1525''F. 



(830'C.) (1), air cooled 

 1650°F. (900°C.) (1), air cooled; 1525°F. 



(830°C.) (1), air cooled; 600°F. (315°C.) 



(1), air cooled 

 1650°F. (900°C.) (1), air cooled; 1525''F. 



(830<'C.) (1), air cooled; 1000°F. (540°C.) 



(1), air cooled 



.Annealed, furnace cooled 



1650°F. (900°C.) water quenched; 1300°F. 



(705°C.), furnace cooled 

 16oO°F. COOO-C.) (3), air cooled 

 1650°r. (gOO-C.) (3), air cooled 

 1650°F. (900°C.) (3), air cooled 

 1550°F. (840''C.) (7), furnace cooled to 



lOOO-F. (540°C.) air cooled 



1650°F. (900°C.) (1), furnace cooled 

 1700°F. (930°C.) (1), air cooled 

 1600°F. (870°C.) (1). air cooled 

 1200°F. (650°C.) (1), air cooled 



As cast 



Annealed 



1650°F. (900°C.) water quenched, drawn 



1300°F. (705°C.), air cooled 

 1650°F. (900°C.), water quenched, drawn 



1100°F. (595''C.) air cooled 

 1650°F. (900°C.), water quenched, drawn 



900°F. (480°C.), air cooled 

 1650°F. (900°C.), water quenched, drawn 



700°F. (370°C.), air cooled 

 1650°F. (900°C.), water quenched, drawn 



oOO°F. (260°C.), air cooled 



