Table 51 

 MECHANICAL PROPERTIES 



Alloy Steels — Commercial Experimental Values 



"3 



Metal. 



Steel, nickel 



nickel 

 chrome. 



chromium. 



chrome 

 vanadium 



silico- 

 manganese 



tungsten 



s. A. E. 



spec. 



Nominal 

 contents, 

 per cent. 



2315 

 2315 

 2335 

 2335 

 2345 

 2345 

 Invar 



6130 1 

 6130/ 



6i95 \ 

 6i95i 



9250 \ 

 9250 ( 

 9X30 1 

 9x30 / 



(C-73) 

 (C-70) 

 (C-47) 



S. A. E. 

 heat 

 treat- 

 ment. 



Ann. 



H 

 Ann. 



H 

 Ann. 



H 



Ann. 



Ann. 



H 4 5o°C 



Ann. 



HorD 



Ann. 



HorD 



Ann. 



M 

 Ann. 



L 

 Ann. 



P 



Ann. 



M or P 



Ann. 

 M or P 



Ann. 

 T 



Ann. 

 U 



Ann. 



V 

 Ann. 



V 

 Ann. 

 Ann. 

 Quench 

 1065 

 Draw 

 205° C 



el *J 



Tension 



kg/ mm 2 



30.O 

 53 -o 

 39-o 



106.0 

 44.0 



136.0 



50.0 



34-o 

 60.0 

 40.0 

 88.0 



39-o 

 77.0 

 44.0 

 i34-o 

 32.0 

 77.0 



39-° 

 120.0 



44.0 

 144.0 



44.0 

 141.0 



43 -o 



84.0 



48.0 

 176.0 



42.0 

 91.0 

 48.0 

 113.0 

 34-o 

 63.0 



158.5 



38.0 

 76.0 

 48.0 



131 

 55-o 



149.0 



77-5 



44-0 



82.0 



50.0 

 1 21.0 



49.0 

 106.0 



55-o 

 183.0 



42.0 

 105.0 



52.0 

 163.0 



58.0 

 193.0 



58.0 

 178.0 



59o 

 115.0 



63.0 

 232.0 



54-o 



122.0 



61.0 



5.0 



59-o 

 89.0 



i75-o 



M 



2j3 



a ■ 

 £ 



55 



Tension 

 lb/in* 



42,500 

 75,000 

 55,000 



151 ,000 

 62,500 



193,000 



7 1 ,000 



49,000 



85,000 



57,000 

 125,000 



55,ooo 

 110,000 



62,000 

 190,000 



46,000 

 110,000 



56,000 

 1 70,000 



62,000 

 205,000 



62,000 

 200,000 



61,500 



120,000 



68,200 

 250,000 



60,000 

 130,000 



68,000 

 160,000 



48,100 



90,000 



225,000 



54,000 

 107,500 



68,000 

 186,000 



78,000 

 212,000 



110,000 



62,000 

 116,000 



71,300 

 172,000 



69,000 

 151 ,000 



78,000 

 260,000 



59,5oo 

 150,000 



74,000 

 232,000 



82,000 

 275,000 



82,000 

 253,000 



84,500 

 163,000 



90,000 

 330,000 



77,000 

 174,000 



87,000 

 211 ,000 



84,200 

 126,000 



248,000 



•SB 



hi c c 



tJ.1 



3 1. 



11 r- 



Per cent. 



32.O 

 18.O 

 24.O 

 15.O 

 2I.O 

 12.0 



30.0 



23.O 

 23.O 

 20.0 

 18.0 

 2I.O 

 23.0 

 19.0 

 16.0 

 2I.O 

 23.O 

 18.0 

 18.O 

 16.0 



7.0 

 13.O 



7.0 



23.O 

 16.O 



16.0 

 8.c 



16.0 

 14.0 

 13.0 

 12.0 

 20.5 

 14.0 



6.0 



60.0 

 55-o 

 53-o 

 51.0 

 48.0 

 45 -o 



50.0 



53-o 

 48.0 

 46.0 

 43 -o 

 50.0 

 48.0 

 42.0 

 32.0 

 50.0 

 48.0 

 45 -o 

 42.0 

 3i-o 

 26.0 

 24.0 

 25.0 



51.0 

 43 -o 



38.0 

 24.0 



28.0 

 24.0 

 22.0 

 21.0 



3i-5 

 22.1 



43 -o 



Hard- 

 ness. 



138 

 321 

 165 

 405 

 172 

 S7Q 



t55 



270 

 182 

 330 

 170 



375 

 180 

 480 



375 

 479 



500 



524 



152 

 432 



562 



441 

 47o 



520 



General Note. — Table on steels after Motor Transport Corps, Metallurgical Branch of Engineering Division, 

 Table No. 88. 



Maximum allowable P 0.045 or less, maximum allowable S 0.05 or less. 



Silicon contents were not determined by Motor Transport Corps in preparing table, except for silico-manganese steels. 

 Compressive strengths: 



For all steels approx. equal to yield point in tension (slightly above P-limit). 

 Density: 



Steel weighs about 7.85 g/cm 3 or 400 lb/ft' 

 Ductility, Erichsen values: 



0.75 mm (0.020. in.) thick, low carbon soft annealed sheet (B. S.), depth of indentation 12.0 mm or 0.472 in. 

 1.30 mm (0.050 in.) thick, low carbon soft annealed sheet (B. S.), depth of indentation 12.5 mm or 0.492 in. 

 Modulus of elasticity in tension and compression: 



For all steels approx. 21,000 kg/mm 2 = 30,000,000 lb/in 2 . 

 Modulus of elasticity in shear: 



For all steels approx. 8400 kg/mm 2 = 12,000,000 lb in 2 . 

 Scleroscope hardness values shown are as determined with the Shore Universal hammer. 

 Strength in shear: 



P-limit and ultimate strength each about 70 per cent corresponding tensile values. 



Smithsonian Tables. 



