---
code: "ASTM E384"
title: "Standard test method for microindentation hardness of materials"
institution: "ASTM"
category: "material-testing"
revision: "2022"
scope: "Covers Knoop and Vickers microindentation hardness using light loads for thin coatings, welds, and small features. Emphasizes surface preparation, optical measurement, and reporting for microhardness scales."
testMethod: "A controlled light force is applied to a polished surface; indentation diagonals or long diagonals are measured with a calibrated microscope to compute hardness at micro scales."
specimenRequirements: "Metallographic preparation is typically required: flat, scratch-free surface with sufficient contrast for diagonal measurement. Mounting is common for edge retention; vibration isolation improves repeatability."
url: "https://vectorbtc.com.tr/resources/standards/astm-e384/"
---

Microindentation testing is essential when bulk hardness methods cannot resolve local zones.