Name.

Copper.

% Tin.

Zinc.

Lead.

Aluminum.

% Iron.

Phosphorus.

Manganese.

Elastic Limit, lbs.

Tensile strength lbs.

Uses.

Muntz Metal.

60

......

40

-

....

-

-

-

-

35,000

Bolts and nuts. Sheathing for wooden hulls of ships.

Cast Naval Brass.

61

1

Remainder.

• ...

• • * ■

• • • •

• •

• • • •

Castings in which great strength is not required.

to

to

63

1.5

* Rolled Naval Brass.

do

do

do

-

-

• • • •

-

-

30,000

60,000

Bolts for propeller blades, air pumps, condenser heads. Valve stems.

Rolled Sheet

Brass.

60

.............

40

.5

• • ■ •

The grades are "soft." "medium hard,1' "hard," "spring." Must stand bending through 180° without fracture on inner radius equal to thickness of material.

to

to

70

30

SeamlessBrass Pipe.

do

.....

do

do

• • • •

• • • ■

• ■ • ■

• •

....

...

For steam and water piping. Standard sizes.

Brazing Metal.

84

• .... •

16

a • • •

......

• • • •

• •

• • • ■

■ • • *

Brazing metal and all flanges and fittings held by brazing.

to

to

86

14

Gun Bronze.

87

11

Remainder.

• • . •

• ■ • •

• • • •

....

• • • •

• ■ a •

• • ■ •

Brass valves and fittings requiring great strength.

to

to

89

9

Journal Bronze.

82

12.5

2.5

• ••

• • • •

• • • ■

• • • •

• • > ■

• • • ■

Bearings, slides, and other parts subjected to friction.

to

to

to

84

14.5

4.5

* Phosphor Bronze.

87

10

2.3

• •

...

....

.7

....

....

• • • ■

Pump rods, valve springs etc., exposed to salt water.

*Cast Manganese Bronze.

56

3/4

41 3/8

....

1/2

1 1/4

• • •

1/8

30,000

60,000

Propeller hubs, blades, engine framing, composition castings requiring great strength.

* Rolled Tobin Bronze.

59

2.16

38.40

.31

• • • •

.11

• • ■ •

...

....

...

Propeller blade bolts and other bolts of composition requiring great strength.

* Aluminum Bronze.

99

• • • •

• • •

• • • •

1

• ■ • •

■ • • •

• • •

• • • •

70,000

Non-corrosive forgings or castings requiring great strength.

to

to

to

90

10

100,000