Welcome

Brinell Hardness Testers And The Testing Method

Hay Testing Kit

Introduction

One of the earliest invented methods of measuring the hardness of materials, the Brinell test, makes use of a special kind of tabletop hardness tester - the Brinell Hardness Tester. The Brinell Hardness Testers give the Brinell Hardness of a material by means of creating an indentation on the specimen material surface. For this, the Brinell Hardness Testers make use of either hard steel or tungsten carbide balls of specific diameters, which are driven into the test material under a specified load. The Brinell hardness number is arrived at by dividing the weight used (in kilograms) by the total surface area of the indentation (in square millimeters). (As long as the ball size and the test force correlation is the same, Brinell values are test force independent).

Brinell Test Method

During the test procedure, the indenter ball is pressed onto the surface of the test material by the application of controlled force, for no more than 10/15 seconds. This forced entry of the indenter ball creates a round indent in the sample material. The size of the indentation is determined by measuring the two diagonals of the round dent with the help of a portable microscope (to plus or minus 0.05mm). Thereafter, the area of the curved surface is derived by multiplying the square of the diameter by 3.14159 and then dividing it by 2.

The Brinell hardness can be calculated by dividing the force applied by the area of the grooved surface. A calibrated chart that allows you to match the corresponding hardness number with the diameter of the indentation is a simpler way to arrive at the Brinell hardness of the sampling.

The Brinell hardness number is usually represented in the following manner - '90 HB 10/500/15', meaning that a Brinell Hardness of 90 was obtained when a 10mm diameter hardened steel ball was pressed against the material using a 500 kilogram load for a period of 15 seconds.

Brinell hardness testers make use of tungsten carbide balls for extremely hard metals; otherwise, the steel ball is the common indenter used. The Brinell Hardness Testers apply loads of around 500 kilograms for soft metals and thin stock. Weights of about 1500 kilograms are used for aluminum castings and 3000 kilograms of weights are used for materials such as iron and steel.

Applications of the Brinell Hardness Test

Any metal can be tested using the Brinell test. All you need to do is change the test force and ball size. Brinell test is often used to determine the hardness of forgings and castings (these have a grain structure far too course for the Rockwell or Vickers Testers). The Brinell number, ranging between HB 50 and HB 750 for metals, increases with the growing hardness of the sample material.

The indenter balls of the Brinell Hardness Testers make deep and wide indentations. This allows for the calculation of hardness over a larger section of the material, giving near-perfect measures of material hardness.

Author: Robert Allen

Other Readers Enjoyed:

Related Products

Westin Slim Line Window Deflectors By Wade Wade Deflectors Vent Visors Amp Window Deflectors

Compared Westin Line Window Deflectors By Wade Wade Deflectors Vent Visors Amp Window Deflectors Order

Easy installation with high-quality 3M automotive tape. Wade Vent Visors - Wade Slim Line Wind Deflectors by Westin. Covered by a limited Lifetime Warranty. Made specifically to fit your vehicle. Constructed from high-impact smoke acrylic. Vent Visors & Window Deflectors by Wade - selected by many auto enthusiasts in the top automotive discussion forums. The Wade Vent Visors - Wade Slim Line Wind Deflectors by Westin will improve and personalize your vehicle. Vent Visors & Window Deflectors by Wade. Wade Slim Line Window Deflectors by Westin Features - Enjoy a cool breeze without the noise, glare and weather. For the top selection of Wade Deflectors shop online today. ...

Price: $55.14 | Merchant: AutoAnything | Date: Nov-19, 2017



Compared Jeep Rails Guard Kit With Tubular Rub Rail 82210575AG Sliders And Guards Por Grosso

Rock Rails Guard Kit with Tubular Rub Rail Fits 2007 to 2016 JK Wrangler Unlimited and Rubicon Unlimited;4-door models;Textured satin black powder coat;Made of heavy steel tubing;Fully functional;Sold as a pair JEEP WRANGLER (JK) UNLIMITED 70TH ANNIVERSARY UNLIMITED ISLANDER UNLIMITED MOUNTAIN UNLIMITED RUBICON UNLIMITED SAHARA UNLIMITED SPORT UNLIMITED SPORT S UNLIMITED X 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 3.6L ERB (220) Pentastar 3.8L (3778cc) GAS Jeep Rock Rails Guard Kit with Tubular Rub Rail 82210575AG Rock Sliders and Guards

Price: $823.99 | Merchant: 4Wheel Drive Hardware


Shop Jeep Rails Guard Kit 82210586AB Sliders And Guards Rabatt

Rock Rails Guard Kit Fits 2007 to 2016 JK Wrangler Unlimited and Rubicon Unlimited;4-door models;Textured satin black powder coat;Made of heavy steel;Fully functional;Sold as a pair JEEP WRANGLER (JK) UNLIMITED 70TH ANNIVERSARY UNLIMITED ISLANDER UNLIMITED MOUNTAIN UNLIMITED RUBICON UNLIMITED SAHARA UNLIMITED SPORT UNLIMITED SPORT S UNLIMITED X 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 3.6L ERB (220) Pentastar 3.8L (3778cc) GAS Jeep Rock Rails Guard Kit 82210586AB Rock Sliders and Guards

Price: $457.99 | Merchant: 4Wheel Drive Hardware


2003 Tahoe Superchips Flashpaq F5 Tuner Regarder

2003 Chevy Tahoe Superchips Power Programmers & Performance Tuners. Superchips Flashpaq F5 Tuner Features - Squeeze out every ounce of power with a Superchips Flashpaq F5 Tuner. Hi-definition 2.8 color screen with easy-to-use graphic interface. Sleek case design fits comfortably in the palm of your hand. Performance levels for gas and diesel trucks or SUVs. Increased memory with quick processor allows for fast updates. Superchips Flashpaq F5 Tuner - F5 Programmers SHIP FREE! For the top selection of Chevy Tahoe 2003 Superchips Performance Chips & Programmers shop online today. The Superchips Flashpaq F5 Tuner - F5 Programmers SHIP FREE! will improve and personalize your vehicle. Chevy Power Programmers & Performance Tuners by Superchips - selected by many auto enthusiasts in the top automotive discussion forums. Superchips Flashpaq F5 Tuner for your 03 Chevy Tahoe will deliver the results you are looking for! Superchips Flashpaq F5 Tuner - 2003 Chevy Tahoe - Performance Chips & Programmers - Power Programmers & Performance Tuners.

Price: $443.94 | Merchant: AutoAnything


Order Here Jeep Overhead Storage Console 1987 2015 Risparmio

Always looking for an extra storage place in your Jeep Wrangler to store your sunglasses maps gloves...

Price: $123.95 | Merchant: Auto Barn


Savings The 2003 Seu

The Earth has stopped rotating because of a change in the planet's core temperature. To restore the normal temperature, astronauts must travel to the center and detonate a nuclear bomb before the core superheats and destroys all life on the surface.

Price: $2.99 | Merchant: Walmart US


Order Here Dora Explorer Season 3 2003 Specifiche

Dora needs help from an explorer like you in her super Season 3 adventures! Travel with Dora and Boots to discover new places like the Lost City, Purple Planet, Dino Island, and more! Save Benny the Bull and help steer Captain Dora in a pirate adventure!

Price: $1.99 | Merchant: Walmart US


Matchstick 2003 Top

From Director Ridley Scott, executive producer Robert Zemeckis and screenwriter Ted Griffin comes this dramatic comedy based on the novel by acclaimed author Eric Garcia. Nicolas Cage stars with Sam Rockwell and Alison Lohman in this comedy about a con man with an obsessive-compulsive disorder whose orderly life and latest lucrative scam are threatened by the reappearance of a teenage daughter he never knew existed.

Price: $2.99 | Merchant: Walmart US


Dora Explorer Season 4 2003 Valor Para O Usuario

Are you ready to explore? Muy Bien! Because play-along adventures await you in Dora the Explorer's fourth season! Climb Star Mountain and become a star catcher, help Dora save her cousin Diego, and more. Dora has lots of new adventures in Season 4!

Price: $1.99 | Merchant: Walmart US