Name of Metal.

Tensile Strength in Pounds per

Sq. In.

Aluminum wire

30,000-40,000

Brass wire, hard drawn

50,000-150,000

Bronze,phosphor,hard drawn

110,000-140,000

" silicon

95,000-115,000

Copper wire, hard drawn.

60,000-70,000

Gold * wire.

38,000-41,000

Iron, † cast

13,000-29,000

" wire, hard drawn.

80,000-120,000

" " annealed.

50,000-60,000

Lead, cast or drawn.

2,600-3,300

Palladium *

39,000

Platinum * wire

50,000

Silver * wire

42,000

Steel, mild, hard drawn

100,000-200,000

" hard "

150,000-330,000

Tin, cast or drawn

4,000-5,000

Zinc, cast

7,000-13,000

" drawn

22,000-30,000