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Copper Alloys

Overview of Copper Casting Alloys

Comparison Table of Casting Characteristics of Major Copper Casting Alloys               

 

LG2

PB2

Tensile Strength (N/mm2)

200-270

220-310

Elongation (%)

13-25

5-15

Brinell Hardness

65-75

75-110

Density (g/cm3)

8.5

8.8

Freezing range (°C approx.)               

1010-854

1000-831

Thermal Con (cal/cm2/cm/°C @ 25°C)

(71)

(45)

Electrical Con (% copper std. @ 20°C)

15

9

Machinability                           

E

G

Corrosion Resistance            

E

E

Electro Plating Suitability

F

F

Non Spark                              

Yes

Yes

Casting Characteristics - Sand      

E

E

Casting Characteristics - Gravity

F

F

Casting Characteristics - High Pressure

U

U

Material Cost (pence/100 cc - July 1996)

118

173

E = Excellent

G = Good

F = Fair

P = Poor

U = Unsuitable

Notes for Designers of Non-Ferrous Castings

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