Table 65 (continued). 



MECHANICAL PROPERTIES. 



TABLE 65. — Copper Alloys — Three (or more) Components. 



87 



Alloy and approx. 



composition. 



per cent. 



Condition. 



•K.£? 

 a JJ 



&t^ 



Tension, 

 kg/mm^ 



Tension, 

 lb/in2 



.9E_ 



1^'^ 



T3 a 



Per cent. 



Hardness. 



Bronze: 



Silicon 



Cu 70, Zn 29.S, Sio.s . . 



Zinc*Comp."G" 



Admiralty gun metal . . 



Comm'c'l range 



Spec, values 



Cu88, Sn8,Zn4 



Cu 85, Sn 13, Zn 2 



Zinc, Lead 



Cugo,Sn6.5,Zn2,Pbi.5 

 Rods and bars 1 1 up to 



12.7 mm a in.) 



over 12.7 mm to 25.4 



mm (i in.) 



over 25.4 mm (i in.) . . 

 Shapes,! I all thicknesses 

 Sheets and plates, ||o to 



12.7 mm {5 in.) 



over 12.7 mm (J in.). . 

 AIuminumTin: 



Cu 88.5, Al 10.4, Sn 1.2 

 Aluminum Titanium: 



Cu 90, Al 10 



Cu 89, Al 10, Fe I 



Lead: 



Cu 71.9, Pb 27. s, Sno.5 



Nickel, Aluminum: 

 Cu 82.1, Ni 14.6, Al 2.5 



Zno.7n 



Cu8s,Sns-,Zn5,Pb5 



Cu 83,Sn 14, Zn 2, Pb i 



Zinc, Phosphor 



(" Non Gran") 

 Cu86, Snii,Zn3, Ptr 

 Vanadium, See Brass 



Vanadium. 

 Copper, Aluminum or 

 Aluminum Bronze: 

 Cu 90, Al 10 



CU92.S, AI7.2 



Aluminum, Iron or Sill- 

 man bronze 



Cu 86.4, Al 9.7, Fe 3.9.. 



Cu 88.5, Alio.s.Fe I.e. 



Cast 



Drawn, hard 



Cast 



Castt 



Cast (mins.). 



Castt 



Cast 



Cast§ 



8.5 



Cast, chill.. 



[ Cast**... 

 \ Quench, 

 [ 800° C. 

 Cast ft 



Cast 



Forged 



Cast§§ 



Cast 



Cast 



Cast, sand 1 1 1 1 . 



Rolled, and 

 ann. 



Wrought 



Cast 



Cast, sand. . 

 Quenched 

 850° C. 

 drawn 

 700° C 



7-58 



468- 

 465 



8.6 

 5-6 to 



8.4 



8.4 to 

 II. 2 

 28.1 



26.4 

 24.6 

 26.4 



27.4 

 26.4 



26.0 



29.0 

 14.1 to 

 17.6 



44- S 

 lo.s to 

 13.4 

 10.5 to 



13.4 



13-9 to 

 23.3 

 7.0 



9.8 



28.0 



46.0 

 74.0 

 27.4 

 22.5 to 

 26.7 

 21.1 

 27. S 

 26.7 



23.9 to 



28.1 



56.2 



52.7 

 50.7 

 52.7 



54-8 

 52.7 



74.0 

 4S.7 to 

 56.2 



4.2 to 

 4.6 



90.0 

 19.0 to 

 23.2 

 16.2 to 

 19.0 



Si-i to 



60.0 



37-5 



S9.3 



55. S 



54-0 



65.0 



12,200 

 8,000 to 

 1 2, coo 



12,000 to 



16,000 



40,000 



37,500 



3S>ooo 

 37,500 



39,ooo1[ 

 37,500 



36,700 



19,800 



40,500 

 20,000 to 

 25,000 



63,300 

 15,000 to 

 19,000 

 15,000 to 

 19,000 



19,800 to 

 33,200 

 9,600 



14,000 

 11,500 

 20,000 



65,000 

 105,000 

 38,900 

 32,000 to 

 38,000 

 30,000 

 39,200 

 38,000 



34,000 to 



40,000 



80,000 



7 5, 000 

 72,000 

 75,000 



78,000 

 75,000 



68,000 



105,200 

 65,000 to 

 80,000 



6,000 to 

 6,600 



128,000 



2 7 ,000 to 

 33,000 



23 ,000 to 



27,000 



72,700 to 



85,500 

 53,500 



84,400 

 78,850 

 77,000 



25.0 



25.0 to 



lO.O 



14.0 



30.5 



2.5 



33.0 to 



25.0 



30.0 



30.0 

 30.0 

 30.0 



30.0 

 30.0 



I.O 



30.0 to 

 20.0 



3.oto 



3.2 



lO.O 



20.0 to 

 16.0 

 4.0 to' 



0.5 



28.8 to 



21.7 



91.0 



ii-S 



14-5 

 24-5 



21.0 

 25.0 to 

 12.0 



24.0 



2-5 



64 



65 to 



75 



13 

 10 to 



25 



34.0 to 50 to 



26.0 60 



Required to bend 

 cold through 

 . 1 20° about ra- 

 dius equal to 

 thickness. 



5-5 189 32 



0.8 

 30.0 to 

 20.0 



4.2 to 



6.7 



12.0 

 20.0 to 



150 



4.0 to 



0.5 



30.0 to 



22.4 



72.9 



18.5 



262 

 93 to 

 100 



50 to 



62 



102 to 

 106 



25 



25 to 



26 



25 to 



26 



* Gov't. Bronze: Cu 88, Sn lo, Zn 2 (values shown are averages for 30 specimens from five foundries tested at the 

 Bureau of Standards). 



t Compressive P-limit 10.5 kg/mm' or 15,000 lb/in' with 29 per cent set for 70 kg/mm^ or 100,000 Ib/in^ load. 



t Values from same series of tests as first values for " 88-10-2, averages for 26 specimens from five foundries tested 

 at Bureau of Standards. 



S Compressive P-limit 9.1 kg/mm^ or 13,000 Ib/in^ with 34 per cent set for 70 kg/mm^ or 100,000 Ib/in^ load. 



II Specification minimums: U. S. Navy 46817, Dec. 2, 1918, for hot-rolled aluminum bronze, Cu 85 to 87, Al 7 

 to 9, Fe 2.5 to 4.5. Specification values under P-limit are for yield point. 



H Two and six tenths per cent increase in strength up to 762 mm (30 in.) width. 



** Compressive P-limit: cast, 14.1 kg/mm? or 20,000 Ib/in^ with 11. 4 per cent set at 70 kg/mm^ or 100,000 lb/in» 

 load. 



tt Compressive P-limit: cast, 12.7 to 14.1 kg/mm" or 18,000 to 20,000 Ib/in^with 13 toi5 percent set at 700 kg/mm' 

 or 100,000 Ib/irf load. 



tt Modulus of elasticity 14,800 kg/mm^ or 21,150,000 Ib/in^ 



§§ Compressive P-limit 8.4 kg/mm^ or 12,000 Ib/in^ with 36 per cent set for 70.3 kg/mm^, or 100,000 Ib/irf load. 



11 II High values are after Jean Escard " L'Aluminum dans L'Industrie," Paris, 1918. Compressive P-limit 13.5 

 kg/mm2 or 19,200 Ib/in^ with 13.5 per cent set for 70.3 kg/mm^ or 100,000 Ib/in^ load. 



Smithsonian Tablej. 



