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Extra-Spring (H10) C12900 Copper

H10 C12900 copper is C12900 copper in the H10 (extra spring) temper. It has the second highest strength and second lowest ductility compared to the other variants of C12900 copper. The graph bars on the material properties cards below compare H10 C12900 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

4.0 %

Poisson's Ratio

0.34

Rockwell B Hardness

62

Rockwell F Hardness

95

Rockwell Superficial 30T Hardness

64

Shear Modulus

43 GPa 6.3 x 106 psi

Shear Strength

200 MPa 29 x 103 psi

Tensile Strength: Ultimate (UTS)

390 MPa 57 x 103 psi

Tensile Strength: Yield (Proof)

380 MPa 56 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

380 W/m-K 220 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

98 % IACS

Electrical Conductivity: Equal Weight (Specific)

98 % IACS

Otherwise Unclassified Properties

Base Metal Price

32 % relative

Density

9.0 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

330 L/kg 39 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

16 MJ/m3

Resilience: Unit (Modulus of Resilience)

640 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

12 points

Strength to Weight: Bending

13 points

Thermal Diffusivity

110 mm2/s

Thermal Shock Resistance

14 points

Alloy Composition

Copper (Cu)Cu 99.88 to 100
Silver (Ag)Ag 0 to 0.054
Nickel (Ni)Ni 0 to 0.050
Tellurium (Te)Te 0 to 0.025
Arsenic (As)As 0 to 0.012
Lead (Pb)Pb 0 to 0.0040
Bismuth (Bi)Bi 0 to 0.0030
Antimony (Sb)Sb 0 to 0.0030

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

Followup Questions

Further Reading

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015