Naval Brass Rods

Chemical Requirements

Grade I

Grade II

Copper

61.0 - 64.0%

59.0 - 62.0%

Lead

0.20% max

0.50 to 1.0%

Tin

1.0 to 1.50%

0.50 to 1.0%

Iron

0.10% max

-

Other Imp.

0.20% max

0.20% max

Zinc

Remainder

Remainder

Physical Properties

Condition

Size

T.S. Kg/mm²

EL% Min

T.S. Kg/mm²

EL% Min

Half-Hard (HB)

Upto 12.5
12.5 to 50
50 to 100

40 min
38.5 min
35 min

18%
18%
18%

40 min
40 min
40 min

15%
15%
15%

Fabrication Properties

Capacity for being

Cold worked

Fair

Poor

Hot Worked

Excellent

Good

Machinability Rating

30%

50%

Forgeability Rating

90%

90%

Silver Alloy Brazing

Excellent

Good

Soft Soldering

Excellent

Excellent

Oxyacetylene Welding

Good

Not Suitable

Uses

Gr I : Condenser Components, Propeller Shaft, Marine hardware where bending is required.

Gr II : Marine Hardware, Screw Machine, Valve Stems and Components for Naval use.