# As Hot Rolled (M20) C76200 Nickel Silver

M20 C76200 nickel silver is C76200 nickel silver in the M20 (as hot rolled) condition. It has the second lowest strength compared to the other variants of C76200 nickel silver. The graph bars on the material properties cards below compare M20 C76200 nickel silver to: wrought copper-nickels (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 10 ^{6} psi*

Poisson's Ratio

0.31

Shear Modulus

44 *GPa* 6.4 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

450 *MPa* 65 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

190 *J/g*

Maximum Temperature: Mechanical

170 *°C* 330 *°F*

Melting Completion (Liquidus)

1030 *°C* 1880 *°F*

Melting Onset (Solidus)

980 *°C* 1800 *°F*

Specific Heat Capacity

390 *J/kg-K* 0.094 *BTU/lb-°F*

Thermal Conductivity

45 *W/m-K* 26 *BTU/h-ft-°F*

Thermal Expansion

19 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

9.0 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

9.8 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

29 *% relative*

Density

8.2 *g/cm ^{3}* 520

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

57 *MJ/kg* 25 *x 10 ^{3} BTU/lb*

Embodied Water

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

## Common Calculations

Stiffness to Weight: Axial

7.8 *points*

Stiffness to Weight: Bending

20 *points*

Strength to Weight: Axial

15 *points*

Strength to Weight: Bending

16 *points*

Thermal Diffusivity

14 *mm ^{2}/s*

Thermal Shock Resistance

14 *points*

## Alloy Composition

Cu | 57 to 61 | |

Zn | 24.2 to 32 | |

Ni | 11 to 13.5 | |

Mn | 0 to 0.5 | |

Fe | 0 to 0.25 | |

Pb | 0 to 0.1 | |

res. | 0 to 0.5 |

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

## Followup Questions

## Further Reading

ASTM B122: Standard Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy 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