# Extra-Spring (H10) C22000 Bronze

H10 C22000 bronze is C22000 bronze in the H10 (extra spring) temper. It has the highest strength and lowest ductility compared to the other variants of C22000 bronze. The graph bars on the material properties cards below compare H10 C22000 bronze to: wrought bronzes (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

110 *GPa* 16 *x 10 ^{6} psi*

Elongation at Break

1.9 *%*

Poisson's Ratio

0.33

Rockwell B Hardness

81

Rockwell Superficial 30T Hardness

73

Shear Modulus

42 *GPa* 6.2 *x 10 ^{6} psi*

Shear Strength

300 *MPa* 43 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

520 *MPa* 76 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

500 *MPa* 73 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

200 *J/g*

Maximum Temperature: Mechanical

180 *°C* 360 *°F*

Melting Completion (Liquidus)

1040 *°C* 1910 *°F*

Melting Onset (Solidus)

1020 *°C* 1870 *°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

18 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

44 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

45 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

29 *% relative*

Density

8.7 *g/cm ^{3}* 540

*lb/ft*

^{3}Embodied Carbon

2.6 *kg CO _{2}/kg material*

Embodied Energy

42 *MJ/kg* 18 *x 10 ^{3} BTU/lb*

Embodied Water

310 *L/kg* 37 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

9.9 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

1110 *kJ/m ^{3}*

Stiffness to Weight: Axial

7.2 *points*

Stiffness to Weight: Bending

18 *points*

Strength to Weight: Axial

17 *points*

Strength to Weight: Bending

17 *points*

Thermal Diffusivity

56 *mm ^{2}/s*

Thermal Shock Resistance

18 *points*

## Alloy Composition

Cu | 89 to 91 | |

Zn | 8.7 to 11 | |

Fe | 0 to 0.050 | |

Pb | 0 to 0.050 | |

res. | 0 to 0.2 |

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

## Followup Questions

## Further Reading

ASTM B134: Standard Specification for Brass Wire

ASTM B36: Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar

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

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993