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UNS C14200 Phosphorus-Deoxidized Arsenical Copper

C14200 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. C14200 is the UNS number for this material. Additionally, the British Standard (BS) designation is C107. Older literature may refer to this material as DPA, but this is now discouraged.

It can have a moderately low tensile strength among wrought coppers. In addition, it has a moderately low thermal conductivity and a moderately low electrical conductivity.

The properties of C14200 copper include five common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare C14200 copper to: wrought coppers (top), all copper alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

120 GPa 17 x 106 psi

Elongation at Break

8.0 to 45 %

Fatigue Strength

76 to 130 MPa 11 to 19 x 103 psi

Poisson's Ratio


Rockwell B Hardness

35 to 60

Rockwell F Hardness

40 to 95

Rockwell Superficial 30T Hardness

45 to 63

Shear Modulus

43 GPa 6.3 x 106 psi

Shear Strength

150 to 200 MPa 22 to 29 x 103 psi

Tensile Strength: Ultimate (UTS)

220 to 370 MPa 32 to 53 x 103 psi

Tensile Strength: Yield (Proof)

75 to 340 MPa 11 to 49 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

200 °C 390 °F

Melting Completion (Liquidus)

1080 °C 1980 °F

Melting Onset (Solidus)

1030 °C 1880 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

190 W/m-K 110 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

45 % IACS

Electrical Conductivity: Equal Weight (Specific)

45 % IACS

Otherwise Unclassified Properties

Base Metal Price

31 % relative


8.9 g/cm3 560 lb/ft3

Embodied Carbon

2.6 kg CO2/kg material

Embodied Energy

41 MJ/kg 18 x 103 BTU/lb

Embodied Water

310 L/kg 37 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

29 to 83 MJ/m3

Resilience: Unit (Modulus of Resilience)

24 to 500 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

6.8 to 11 points

Strength to Weight: Bending

9.1 to 13 points

Thermal Diffusivity

56 mm2/s

Thermal Shock Resistance

7.9 to 13 points

Alloy Composition

Among wrought copper alloys, the composition of C14200 copper is notable for including arsenic (As) and phosphorus (P). Arsenic is used to protect the alloy against dezincification. Phosphorus is used as an alloy deoxidizer, and to reduce vulnerability to dezincification.

Copper (Cu)Cu 99.4 to 99.835
Arsenic (As)As 0.15 to 0.5
Phosphorus (P)P 0.015 to 0.040

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM B111: Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

ASTM B152: Standard Specification for Copper Sheet, Strip, Plate, and Rolled Bar

Copper Alloys: Preparation, Properties and Applications, Michael Naboka and Jennifer Giordano (editors), 2013