Table 1 Element Indicators.

From: Sustainability indicators in high entropy alloy design: an economic, environmental, and societal database

Element indicator

Unit or range

Reference

Formula

Economic viability

Raw Material Price, \({{MP}}_{i}\)

USD/kg

 

—

Supply Risk, \({{SR}}_{i}\)

[0,1]

8

—

Normalized Vulnerability to Supply Restriction, \({{NVSR}}_{i}\)

[0,1]

8

\({{VSR}}_{i}/\log ({{production}}_{i})\)

Environmental impact

Embodied Energy, \({{EE}}_{i}\)

J/kg

9

—

Water Usage, \({{WU}}_{i}\)

l/kg

9

—

Rock to Metal Ratio, \({{RMR}}_{i}\)

kg/kg

10

—

Human well-being

Human Health Damage, \({{HHD}}_{i}\)

[0,100]

8

 

Human Rights Pressure, \({{HRP}}_{i}\)

[0,100]

11

\({\sum }_{c}{g}_{i,c}.{{HRP}}_{c}\)

Labor Rights Pressure, \({{LRP}}_{i}\)

[0,100]

12

\({\sum }_{c}{g}_{i,c}.{{LRP}}_{c}\)

  1. \({{MP}}_{i}\), \({{SR}}_{i}\), \({{NVSR}}_{i}\), \({{EE}}_{i}\), \({{WU}}_{i}\), \({{RMR}}_{i}\), \({{HHD}}_{i}\), \({{HRP}}_{i}\), and \({{LRP}}_{i}\) represent the nine impacts for element \(i\). \({{VSR}}_{i}\) and \({{production}}_{i}\) denote the vulnerabilities to supply restriction and the world production of element \(i\), respectively. \({g}_{i,c}\), \({{HRP}}_{c}\) and \({{LRP}}_{c}\) are the geographic distribution of element \(i\) extraction (production share of each county \(c\)), the human right pressure, and the labour rights pressure of the country \(c\), respectively.
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