Commercial Bronze Copper Alloy - CDA 220

Element

Composition (%)

Copper (Cu)

90.0% Min

Tin (Sn)

10.0%

Lead (Pb)

0.5% Max

Other Elements (Total)

0.5% Max

Property

Value

Density

0.318 lb/in³

Ultimate Tensile Strength

45 ksi

Yield Tensile Strength

34.8 ksi

Shear Strength

33.4 ksi

Shear Modulus

6,380 ksi

Hardness (Rockwell)

B42

Hardness (Brinell)

76

Elongation at Break Percentage

25%

Modulus of Elasticity

16,700 ksi

Poisson's Ratio

0.31

Machinability Percentage

20%

Melting Point

1,870-1,913 °F

Specific Heat

8.99 x 10^-2 BTU/lb-°F

Thermal Conductivity

1310 BTU-in/hr-ft²-°F

Electrical Conductivity

44% IACS

Property

Value

Ultimate Tensile Strength (UTS)

90 ksi (620 MPa)

Yield Strength (0.2% offset)

40 ksi (276 MPa)

Elongation (in 4D)

25%

Reduction of Area

50%

Hardness (Rockwell)

B70

Hardness (Brinell)

150 HB

Modulus of Elasticity

16,700 ksi (115 GPa)

Shear Strength

33.4 ksi (230 MPa)

Fatigue Strength

20 ksi (138 MPa)

Property

Value

Melting Point

1,870 - 1,913 °F

Specific Heat

0.0899 BTU/lb-°F

Thermal Conductivity

1,310 BTU-in/hr-ft²-°F

Property

Value

Soldering

Excellent

Brazing

Excellent

Oxyacetylene Welding

Good

Gas Shielded Arc Welding

Good

Coated Metal Arc Welding

Not Recommended

Spot Welding

Fair

Seam Welding

Not Recommended

Butt Welding

Good

Cold Working Capacity

Excellent

Hot Forming Capacity

Fair

Machinability Rating

30