Vickers Hardness Testing

Hardness Testing Equipment
 Metals and Materials Table of Contents

In this test, a small pyramidal diamond is pressed into the metal being tested. The Vickers Hardness number (HV) is the ratio of the load applied to the surface area of the indention. This is done with the following formula.

The indenter is made of diamond, and is in the form of a square-based pyramid having an angle of 136 degrees between faces. The facets are highly-polished, free from surface imperfections, and the point is sharp. The loads applied vary from 1 to 120 kg; the standard loads are 5, 10, 20, 30, 50, 100, and 120 kg. For most hardness testing, 50 kg is maximum.

A Vickers hardness tester should be calibrated to meet ASTM standard E10 specifications, acceptable for use over a loading range.

 

© Copyright 2000 - 2008, by Engineers Edge, All rights reserved.  Disclaimer 

Home
Products and Services
Engineering Forum
CAD Forum

Engineering Design Data
Engineering Drafting Store
Engineering News
Engineering Calculators
Newsletter Register
Advertise

Feedback