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Copper Alloy No. C92300*

Names formerly used (not recommended):
230, Leaded Tin Bronze, Leaded “G” Bronze, 87-8-1-4

Chemical Composition % by weight

Element

Nominal

Minimum

Maximum

Aluminum

-

-

.005

Antimony

-

-

.25

Copper

87

85.0

89.0

Iron

-

-

.25

Lead

-

.30

              1.0

Nickel

-

-

1.0

Phosphorous

-

-

.05

Silicon

-

-

.005

Sulfur

-

-

.05

Tin

8

7.5

9.0

Zinc

4

2.5

5.0

 

Typical Applications

Bushings, bearings, gears, valves, pipe fittings and high pressure steam castings;
superior machinability to Copper Alloy No. C90300

 

Mechanical Properties

Test Bar Values as Sand Cast

Property

 

Minimum

Typical

Tensile Strength

ksi

36.0

40.0

Yield Strength

ksi (0.5% Extension Under Load)

16.0

20.0

Elongation

% in 2 inches

18.0

25.0

Hardness

Brinell (500 kg Load)

-

70.0

 

Fabrication Practices

Suitability for being joined by:

 

Soldering

Excellent

Brazing

Good

Oxyacetylene Welding

Not Recommended

Carbon Arc Welding

Not Recommended

Gas Shielded Arc welding

Not Recommended

Coated Metal Arc Welding

Not Recommended

 

Machinability Rating
(Free Cutting Brass=100)

42

C83600 (115) | C84400 (123) | C90300 (225) | C92300 (235) | C92200 (245) | C90700 (205) | C92900 (206A)
(319) Aluminum | (356) Aluminum | (535) Almag | C85400 (403) | C86500 (421) | C86300 (424)
C95400 (415C) | C87500 (500-13B) | C89833 (836) | C87850 (Eco Brass)

*Properties are similar to 235 Alloy

*Since brazing is performed at temperatures within the hot-short range, strain must be
avoided during the brazing and cooling of this alloy.

The values listed above represent reasonable approximations suitable for general engineering use.
Due to commercial variations in composition and to manufacturing limitations, they should not
be used for specification purposes. See applicable A.S.T.M. specification references.

 

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