Hardness

https://www.wikidata.org/wiki/Q3236003

Field Hierarchy

Parent
Physics 33.6M papers	Materials science 19M papers	Composite material 8.9M papers	Thermodynamics 5.2M papers
Metallurgy 5M papers
Current
Hardness 13.2k papers
Child
Case hardening 3,147 papers

Trends

Notes

History