122 



TABLE 69 {continued) 



MECHANICAL PROPERTIES 



Copper Alloys — Three (or more) Components 



Alloy and approx. 



composition 



per cent. 



Brass, Tin — (continued): 

 Rods:* o to 12.7 mm (J in.) 

 12.7 to 25.4 mm (1 in.) 



over 25.4 mm (in.) diam. 



Shapes, all 



Plates to 12.7 mm (J in.) 



over 12.7 mm (% in.) thick 



Tubing (wall thickness) o to 



3.2 mm (i in.) 



3.2 to 6.4 mm (J in.) 



over 6.4 mm (J in.) 



Vanadium : 

 Victor bronze, 



V0.03, Cu 58.6, Zn 38-5 



Al 1.5, Fe 1.0 



U. S. Navy t 49 B ib. . .. 



Bronze, Aluminum 



Lead: 



Cu 8g, Sn 10, Pb i 



Cu 88, Sn 10, Pb 2 



Cu 8o, Sn io, Pb io 



Lead, Phosphor: 



Cu 8o, Sn io, Pb io, P trace 

 Lead Zinc, Red brass: 



Cu 8i, Sn 7, Pb 9, Zn 3 . . . . 



Cu88, Sn8,Pb2,Zn2 



Lead, Zinc Phosphor: 



Cu 73.2, Sn ii. 3, Pb 12.0, 



Zn 2 .s,Pi 



Manganese: 



Cu 88, Sn 10, Mn 2 



Nickel, Zinc: 

 Cu88, Sns,Nis,Zn2(i)... 

 Cu 89, Sn 4, Ni 4, Zn 3 (2) . . . 

 Phosphor: 



Cu 95, Sn 4.9, P 0.1 



Cu 89, Sn 10.5, P 0.5 



Cu 80, Sn 20, P max. 1 



Rods and bars §§ up to 12.7 



mm (J in.) 



(minimum) over 12.7 mm 



to 25.4 mm (1 in.) 



over 25.4 mm (1 in.) 



Sheets and plates §§ spring 



temper 



Medium temper 



Condition. 



Cold drawn 



See Cu Al 



Cast*.... 

 Cast § . . . . 



Cast, sand 

 Cast, chill. 



Cast 



Cast|| 



Cast If.... 



Cast 



Cast**.. 



Cast 



Casttt 

 Casttt 



Rolled... 



Cast 



Casttt.. 





EDO 

 .„ c 



55 



Tension, 



kg/mm 2 



19.0 

 18.3 



17.6 

 iS-7 

 19-3 

 17.6 



21. 1 

 19-7 

 18.3 



S6. S 

 15-8 



134 to 

 16.2 

 10.9 

 12.8 



11. 



138 



134 to 



14. 1 



10.5 

 9.0 

 9.2 



8.1 



28.0 

 II. 2 to 



14.1 



28.1 



21. 1 



17-611 



42.2 

 40.8 



38.0 

 394 

 38.7 

 39-4 



42.2 

 38.7 

 3S.I 



64- 5 



38.7 



I5-S 

 21. 1 to 

 24.6 



21.0 

 18.8 

 21. 1 to 

 24.6 

 21.8 to 

 26.0 



21.4 



19. 1 



28.6 

 27.9 



46.0 

 21.8 to 

 24.6 



56.2 



42.2 



38.7 



63.2 

 35-i 



e1? 



Tension, 

 lb/ in 2 



27,000 

 26,000 



25,000 

 22,400 

 27,500 

 25,000 



30,000 

 28,000 

 26,000 



80,000 

 22,500 



19,000 to 

 23,000 

 15,500 

 18,200 



16,000 

 19,600 

 19,000 to 

 20,000 



15,000 



12,800 



13,100 

 11,500 



40,000 

 16,000 to 

 20,000 



60,000 



40,ooo||ll 

 30,ooo|||l 



60,000 

 58,000 



54,000 

 56,000 

 5S.ooo 

 56,000 



60,000 

 55.ooo 

 50,000 



92,000 

 55,000 



22,000 

 30,000 to 

 35,ooo 

 31,400 

 35,200 



30,000 

 26,800 

 30,000 to 

 35,000 

 31,000 to 

 37,000 



30,400 

 27,200 

 40,700 



39,700 



65,000 

 31,000 to 

 35,000 



80,000 



60,000 

 55.000 



90,000 

 50,000 



Per cent. 



Hard- 

 ness. 



— 



35o 

 40.0 



40.0 

 30.0 

 32.0 

 350 



28.0 

 32.0 



350 



II-5 



25.0 



20.0 to 

 15.0 

 13-5 

 4-5 



6.0 

 11 o 

 18.0 to 



15.0 

 20.0 to 

 16.0 



4.0 



25.0 



32.0 

 310 



30.0 

 6.0 to 

 10.0 



20.0 

 25.O 



To bend 120 

 cold about 

 radius equal 

 to diameter. 



Required to 

 bend cold 

 through 120 

 about radi- 

 us equal to 

 thickness. 



Bronze, Phosphor: spring wir^, hard-drawn or hard-rolled (U. S. Navy Spec. 22W5, Dec. 1, 1915). Cu 94 

 Sn min. 4.5, Zn max 0.3, Fe max. 0.1, Pb max. 0.2, P 0.05 to 0.50; max. elong. in 203 mm (8 in.) =4 per cent. 



Diameter (group limits). 



Up to 1.59 mm or 0.0625 in 



Over 1.59 mm to 3.17 mm (0.125 in.). 



Min. tensile 

 strength. 



kg/mm 2 lb/in ! 



95 o 

 88.0 



135,000 

 125,000 



Diameter 

 (group limits). 



to 6.35 

 to 9 . 5 2 



to o. 250 

 to 0.37s 



Min. tensile 

 strength. 



kg/mm 2 



77-5 

 74.0 



lb/ in 2 



IIO.OCO 



105,000 



♦Specification Values, Rolled Brass, Cu 62, Zn 37, Sn 1, min. properties after U. S Navy Spec., 1918. 



t Specification Values: Jan. 3, 1916, Vanadium Bronze Castings, Cu 61, Zn 38, Sn max. 1 (incl. V). Mimima. 



t Compressive P-limit 15.5 kg/mm 2 or 22,000 lb/in 2 



§ Compressive P-limit 10.5 kg/mm 2 or 15,000 lb/in 2 and 28 per cent set for 70 kg/mm 2 or 100,000 lb/in 2 



[| Ultimate compressive strength, 54.2 kg/mm 2 or 77,100 lb/in 2 (Cu 76, Sn 7, Pb 13, Zn 4). 



11 Compressive P-limit 8.8 to 9.1 kg/mm 2 or 12,500 to 13,000 lb/in 2 , and 34 to 35 per cent set for 70 kg/mm 2 



** Compression: ultimate strength 49.5 kg/mm 2 or 70,500 lb/in 2 



tt Modulus of Elasticity:' (1) 12,200 kg/mm 2 or 17,300,000 lb/in 2 ; (2) 10,500 kg/mm 2 or 14,900,000 lb/in 2 



tt Compressive P-limit 17.6 to 28.1 kg/mm 2 or 25,000 to 40,000 lb/in 2 and 6 to 10 per cent set for 70 kg/mm 2 

 or 100,000 lb/in 2 load. 



Specification Values: U. S. Navy 46 B 5c, Mar. 1, 1917, Cu 85 to 90, Sn 6 to n, Zn max. 4: Cast, Grade 1. — Im- 

 purities max. 0.8; min. tensile strength 31.6 kg/mm 2 or 45,000 lb/in 2 with 20 per cent elong. in 50.8 mm (2 in.). 



% Grade 2. — Impurities max. 1.6; min. tensile strength 21 1 kg/mm 2 or 30,000 lb/in 2 with 15 per cent elong. in 

 50.8 mm (2 in.). 



§§ Specification Values: U. S. Navy 46B 14b, Mar. 1, 1916, Cu min. 94, Sn min. 3.5, P 0.50, rolled or drawn. 



|||| Minimum yield points specified : for P-limits assume 66 per cent of values shown. 



Smithsonian Tables. 



