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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

SN EN ISO 4545-4
Metallic materials - Knoop hardness test - Part 4: Table of hardness values (ISO 4545-4:2017)

Title (German)

Metallische Werkstoffe - Härteprüfung nach Knoop - Teil 4: Tabelle zur Bestimmung der Härtewerte (ISO 4545-4:2017)

Edition 2018-08

Original language German

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

SN EN ISO 4545-4 Metallic materials - Knoop hardness test - Part 4: Table of hardness values (ISO 4545-4:2017)

Want to learn more?

SN EN ISO 4545-4
Metallic materials - Knoop hardness test - Part 4: Table of hardness values (ISO 4545-4:2017)