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Spring-Tempered (H08) C19400 Copper

H08 C19400 copper is C19400 copper in the H08 (spring) temper. It has the lowest ductility compared to the other variants of C19400 copper. The graph bars on the material properties cards below compare H08 C19400 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

2.3 %

Poisson's Ratio

0.34

Rockwell B Hardness

76

Rockwell Superficial 30T Hardness

70

Shear Modulus

44 GPa 6.4 x 106 psi

Shear Strength

290 MPa 42 x 103 psi

Tensile Strength: Ultimate (UTS)

500 MPa 73 x 103 psi

Tensile Strength: Yield (Proof)

470 MPa 68 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

200 °C 400 °F

Melting Completion (Liquidus)

1090 °C 1990 °F

Melting Onset (Solidus)

1080 °C 1980 °F

Specific Heat Capacity

390 J/kg-K 0.093 BTU/lb-°F

Thermal Conductivity

260 W/m-K 150 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

67 % IACS

Electrical Conductivity: Equal Weight (Specific)

68 % IACS

Otherwise Unclassified Properties

Base Metal Price

30 % relative

Density

8.9 g/cm3 560 lb/ft3

Embodied Carbon

2.6 kg CO2/kg material

Embodied Energy

40 MJ/kg 17 x 103 BTU/lb

Embodied Water

300 L/kg 36 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

11 MJ/m3

Resilience: Unit (Modulus of Resilience)

930 kJ/m3

Stiffness to Weight: Axial

7.3 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

16 points

Strength to Weight: Bending

16 points

Thermal Diffusivity

75 mm2/s

Thermal Shock Resistance

18 points

Alloy Composition

Copper (Cu)Cu 96.8 to 97.8
Iron (Fe)Fe 2.1 to 2.6
Zinc (Zn)Zn 0.050 to 0.2
Phosphorus (P)P 0.015 to 0.15
Lead (Pb)Pb 0 to 0.030
Residualsres. 0 to 0.2

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

Followup Questions

Further Reading

ASTM B465: Standard Specification for Copper-Iron Alloy Plate, Sheet, Strip, and Rolled Bar

Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001

ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001