---
term: "Specimen Preparation"
category: "sample-preparation"
shortDefinition: "Cutting, grinding, and finishing steps that produce test pieces with required geometry, surface integrity, and alignment before mechanical, impact, or microstructural testing."
relatedStandards: ["ISO 148-1","ISO 6892-1"]
url: "https://vectorbtc.com.tr/resources/glossary/specimen-preparation/"
---

## What it measures

**Specimen preparation** is not a measured property—it is the **workflow** that ensures test results reflect material behaviour rather than machining damage, wrong dimensions, or misaligned notches.

## How it is tested

Routes include **crushing** and **milling** for bulk sampling, **machining** for tensile rounds and Charpy bars, and **grinding/polishing** for metallographic or hardness mounts.

## Standards and reporting

Each downstream test (tensile, Charpy, hardness) references allowable preparation in its standard. Document heat-affected zones, coolant, and final dimensions on the test report chain.

## Common errors

Overheating during cutting, incorrect notch root radius, and out-of-tolerance gauge lengths are leading causes of rejected mechanical tests.