#hardnesstest

Metal Testing Laboratory in Ahmedabad | Bunitech Metallurgical

Get accurate and reliable mechanical testing services in Ahmedabad with Bunitech Metallurgical. We specialize in UCI Hardness Test, Cupping Test, TMT Bend & Re-bend Test, and other quality testing services to ensure your materials meet industry standards. Our advanced lab setup and experienced team guarantee precise and trustworthy results for all your metallurgical testing needs.

For more information: https://unitechmetallurgical.com/service/mechanical-testing/

By understanding the needs of the customers, we, at Sigma Test and Research Centre, provide services that can help them to know their product’s level hardness and delicacy through high equipped scratch hardness test.

Scratch mechanism is something that cannot be ignored and found everywhere where one might not even expect. Therefore, the scratch test has been the best and most convenient thing since ages that determines the hardness of the product in which machines are used with different minerals that can be a diamond or gypsum depending upon the hardness.

How the test is performed?

We follow various fundamental characteristics and standard in our tests which helps us obtain the best and most accurate results about the quality. Similarly, in the scratch hardness test, we perform the test on the specimen by scratching it with various materials. A specific load is set at which the needle penetrates the surface back and forth. The condition of the surface is noted before and after conducting the test which is later examined by our experienced team members.

With the help of automatic scratch hardness tester operated by experts of the industry and laboratories, we test the product in the controlled atmosphere to obtain utmost details about the quality of the product.

Contact the Sigma Team for Any Inquiries

Website:- https://www.sigmatest.org

Call on this number +91-9560222333

Hi there, my sweetheart. How are you feeling today? I miss you so much.

In this tutorial, I want to share with you some ideas of What is a non-destructive hardness test?

I hope you will like it.

Before we start, let’s review the

Definition of the hardness test.

The non-destructive hardness test is defined as the process of checking and testing of construction materials and their components.

In this process, the components are tested to their extent without destroying them.

This allows us to know about the toughness of the materials so that in the coming days whether they will be able to stay or not.

This process is also known as non-destructive evaluation (NDE).

Simple, right? Keep going!

non-destructive evaluation

This process of non-destructive hardness testing is used at the industrial level because in the industries,

these products are manufactured in bulk quantities and the industries do not compromise on the quality of the products.

For example, as we hear that due to earthquake, a building turned into ashes.

Whereas, all other buildings are still standing in their positions.

This also depends on the quality of the materials.

Hardness test lets the manufacturers check the quality of the material,

so that in case of any low-quality material production they could remake it and increase its quality.

In this way, the popularity of the industry increases due to the increase in the quality of the products.

Before we go further, let me tell you something, my old sport.

Just between you and me.

if you are looking to buy a professional and high-quality hardness tester,

please visit our website www.testhardness.com. and, please, please remember to ask for a coupon!

Keep this secret for me, would you?

Ok, let’s move on.

So, do you know

what is the difference between the hardness test

and bending or stress test?

Tell you what,

This process of hardness testing is very different from the processes of bending or stress testing ,

because in stress testing and bending processes, materials often break and are deformed whereas nothing such happens in non-destructive hardness testing.

Rather it provides us with more specifications of the materials rather than any other test.

It is expensive than the others and sometimes also results in the loss of products,

but the main reason why manufacturers prefer this process is the detailed specifications that it provides us about the product.

The famous industries that use this process are automotive industries, aerospace industries, construction material industries and more.

Some of its uses in these industries are to identify any cracks in the aircraft skin, checking the flaws of the surface of the pipes and so on.

Amazing, right?

Let’s dive deeper. I will talk about some

other uses of this test.

Nowadays this process is becoming popular for research and development purposes.

It provides almost all important information related to the product that is necessary for the field of research and development.

Therefore, in order to avoid any incident, every material from the base needs to be checked.

This reduces the risk of collapsing of the product built or manufactured by the components.

Thank You

All right, that is what we would like to share in this video, my old sport.

Do you have a good time today?

We will talk about How to choose hardness test in the next video.

Don’t forget to subscribe to our channel to watch more videos about professional hardness testers, my dear old sport.

Also, you can check our website www.testhardness.com to find more information about our hardness tester product and latest industry news.

Stay tuned for the next episode my dear best friend!

Hello, my dear friend!

Have you ever wonder how to test the hardness of rocks at home?

Of course, I bet you do!

That is what normal people do every day!

Why?

Because rocks are so cute, aren’t they?

These minerals are inorganic, solid and pure materials that are found in the crust of the Earth and are composed of one or more elements.

While we talk about the elements, they are naturally occurring and most basic substances found on Earth and cannot be broken down.

First of all, the Physical properties of minerals.

There are various minerals found on the crust of the Earth, and all of them have different physical properties and chemical compositions that are unique to that specific mineral.

With the variation in the number of minerals in each rock, the chemical and physical properties of each rock differ even if they share the same mineral ingredients.

Also, the processes used for the rocks by which they are formed, such as being doughy and burned. make a difference between various kinds of rocks.

However, there are a few minerals that commonly form the rock such as Quartz, mica, feldspar, hornblende, and calcite.

So, you must be wondering.

Which rocks are more valuable?

The value of each mineral varies depending upon its significance.

The more valuable mineral is the one that is rare.

The same goes for the use of minerals as the more they are used for different things, the more that mineral becomes valuable.

There are a number of minerals that are considered valuable for their beautiful properties and are used to serve various purposes such as mining platinum, gold, and diamond.

Before we go further, let me tell you something, my old sport.

Just between you and me.

if you are looking to buy a professional and high-quality hardness tester, please visit our website www.testhardness.com. and, please, please remember to ask for a coupon!

Keep this secret for me, would you?

Ok, let’s move on.

How do we know the Hardness of rocks?

The hardness of rocks depends on the quantity and type of the mineral constituents of the rock as well as the bond strength existing between mineral grains.

The hardness of rocks is all about measuring the strength of bonds between atoms and the resistance of minerals to scratching instead of referring to how easily the mineral is broken.

A scratch is a permanent groove or line into the material surface being tested.

Why determining the hardness of rocks is important?

The hardness of the rock plays a vital role in determining its strength, toughness, and durability.

There are generally three forms of rocks that include igneous, metamorphic and sedimentary rocks.

All of these rocks are essential for our everyday life and can be used for multiple purposes.

They are used for constructing buildings, stone walls, walkways, art jewelry and much more.

Engineers and scientists lookout for the best rocks by determining their hardness so that they identify the ideal ones for their relevant needs.

By assessing the hardness of rocks, they'll be able to recognize the best quality rocks and use them for various purposes.

What is Commonly used hardness test?

The common method used to test the hardness of minerals was developed by a German mineralogist named “Friedrich Mohs” in 1822.

A hardness scale was developed by him to identify the properties of minerals.

The hardness scale is called “Moh’s scale” and consists of numerical mineral values of hardness ranging from 1-10.

The softest mineral on the list is talc and is given the least hardness whereas diamond is given the highest hardness rating rendering it to be the hardest mineral. Alright, you must be eager to know.

How to test the hardness of rocks at home?

Even though Moh's test is globally used and appreciated a reliable method for testing the accurate hardness of rocks/minerals.

There are a number of household objects or materials that can be used to test the hardness of rocks at home because they have the hardness identical to the ones used in Moh's hardness test scale.

For determining the hardness of the unknown rock, it is relatively easy to use the objects mentioned in the table since the majority of the minerals have the hardness between 2 and 7.

You should scratch the rock against the substance to measure the hardness of rock.

If both of them scratch each other, it means they both have equal hardness. Let's elaborate on this discussion in detail.

Firstly, Material.

The material you are going to take to test the hardness of the rock includes glass plate, copper penny, steel file, pocket knife, one piece each of Quartz and fingernail.

These materials are easily available in the home hence making your hardness testing easier.

Secondly, Procedure.

You can simply begin by scratching the above-mentioned household objects against the mineral/rock to be determined for hardness.

You begin with soft objects such as fingernails with the hardness of 2. Scratch the fingernail against the mineral to be observed.

If the fingernail scratches the mineral, the mineral is then expected to have a hardness of less than 2.

You can continue using different household objects to check the relevant hardness of minerals afterward.

However, if you are able to scratch the mineral against the objects having higher hardness such as a glass plate, it means the hardness of the mineral is greater than 5.5.

Final verdict.

We use various characteristics to identify people such as hair color, language, eye color etc. Similarly, geologists use specific characteristics to identify minerals and rocks.

Engineers, scientists and builders etc. also emphasized on determining the hardness of these rocks before making them into use. Instead of getting into extensive hardness testing procedures, people can simply use household items and determine the hardness of minerals and rocks.

This home-based procedure can be very beneficial either you are teaching your kids the science projects or merely using it for your personal projects.

Do you have a good time today?

We will talk about What is the Strongest Material in the World in the next video.

Don’t forget to subscribe to our channel to watch more videos about professional hardness testers, my dear friend.

Also, you can check our website www.testhardness.com to find more information about our hardness tester product and latest industry news.

Stay tuned for the next episode my dear best friend!

For many quality testing and other procedures, hardness testing holds prime importance.

Hardness tests enable us to evaluate the properties of materials such as ductility, strength and wear resistance that will help us determine to check if the material is suitable for a specific purpose.

The hardness of a material is not its fundamental property, but it's only a way to determine the resistance exhibited by material to permanent deformation.

The hardness test to be performed for a specific material is based on the homogeneity, size, type, and condition of the material you are going to test. There are several hardness tests available, and one of them is the Vickers hardness test.

Vickers hardness testing

Vickers hardness testing is a multifaceted testing method that can be used for both micro and macro hardness testing.

Vickers hardness test was developed by George E. Sandland and Robert L. Smith in 1921 as an alternative to the Brinell method for measuring material hardness.

A wide range of applications and materials can be subjected to Vickers hardness testing, including microhardness testing.

It is generally considered easy to be carried out as compared to other hardness tests since the indenter can be used with all kinds of materials irrespective of their hardness and also because the size of the indenter doesn’t effect the required calculations.

Categorization of Vickers testing method

Vickers testing method is considered as a static hardness testing method that can be characterized further into the following aspects:

Regarded as one of the standardized procedures (ASTM E384, ASTM E92, ISO 6507)

It is an optical method which means the hardness value of a test material/specimen is determined by the size of the indentation.

The indenter has a plane angle of 136° and is an equilateral diamond shaped pyramid.

Vickers testing method can be used across all load ranges used for hardness testing (from micro to macro ranges) as it has a test load range from 1gf up to 120 kgf according to ASTM and 1gf according to ISO respectively.

How is it performed?

Vickers hardness test is incredible in its ability to be performed on both micro and macro hardness scales with a maximum test load of around 50 kgs.

Vickers hardness test is performed by putting a controlled force on the indenter that is usually a square-shaped diamond pyramid over a period of time.

After a particular indenter is pressed into the surface under testing, the indentation resulting from it is measured with the aid of high-powered magnifying instruments such as microscopes and eyepieces. Sometimes, the software is also used to analyze and generate more precise results.

Two varying forces are used by Vickers hardness tests such as micro ranges at 10 to 100 grams and macro ranges from 1 to 100 kgs.

Both ranges use the same indenter hence producing hardness values that are constant over all-metal hardness ranges.

Sample preparations are mandatory to obtain precise results. A sample is required that is small enough to fit into the tester adequately.

Moreover, to achieve accurate measurement and regular shape of indentation, the preparation must have a smooth surface. This also makes sure that the indenter can conveniently hold the subject perpendicularly.

Specimen required for Vickers hardness testing

The surface of the specimen that is needed for the Vickers testing method needs to be prepared first when using Vickers method.

This is because the requirements of specimen surface quality are stricter than other testing procedures.

The specimen needs to meet the given requirements for Vickers hardness test:

The specimen/ material has to be precision-ground in case of macro-hardness testing or polished for micro-hardness testing.

The specimen/material shouldn’t move during the testing procedure and should be clamped strongly.

Moreover, care should be taken regarding any kind of vibration or disturbance while conducting a Vickers hardness test to avoid poor results.

Importance of Vickers hardness test

Vickers test can be very beneficial for applications such as testing ultra-thin materials like foils.

They can also be very useful for measuring single microstructures, small parts or surfaces and determining a hardness change profile by producing an indentation series.

If the indentation is smaller, the object will be harder. Likewise, the material is expected to lack hardness if the indentation is large.

Vickers hardness testing is used by several industries to determine the right kind of material to be used for machinery and operations.

The material with the best hardness conditions is then chosen for the specific purpose in the industry.

Advantages of Vickers hardness tests

There are several advantages of the Vickers hardness test. Some of them are discussed below:

Vickers hardness tests procedures cover the entire hardness range, and hence it can be used for any kind of specimen or material whether it's hard or soft. Either it's about microhardness testing or macro hardness testing, Vickers hardness tests can generate accurate results for both.

Often considered as Microhardness testing, Vickers hardness tests are used to test any kind of material including composites, ceramics, and metals, etc.

Only one type of indenter is used for various kinds of Vickers methods.

The specimen used in the Vickers hardness test can be used for other purposes as well because the test also accompanies non-destructive testing.

Disadvantages of Vickers hardness testing

Despite many advantages that render Vickers testing to be one of the best hardness testing methods, there are a few disadvantages as well that should be taken into consideration.

As the indent is measured optically, the specimen’s surface quality must be smooth and good. This means that the precise evaluation could be difficult if the test location is not well- prepared (i.e., polished and ground).

Compared to Rockwell hardness testing and other methods, Vickers hardness testing is comparatively slow. The test cycle doesn’t include the time taken to prepare the specimen and takes around 30-60 seconds approximately.

Have you ever wonder what is the difference between Rockwell hardness tester, Vickers hardness tester and Brinell hardness tester?

Well in the next 4 minutes, I will tell you everything you need to know of how to choose the right hardness tester for you!

The ability of any certain object or substance to resist indentation when a force is applied to it is known as hardness.

An object’s hardness should be classified as a feature or a characteristic rather than one of its properties and the hardness is generally measured by calculating the permanent area of the indentation caused by a fixed load.

The Hardwell and Brinell tests are two specific methods to measure hardness.

Rockwell Test

The Rockwell Test is the easier of the two methods and tends to be more accurate. It can be utilized for testing metals of all sorts including hard metals (unlike Brinell Tests), except for circumstances where external factors play a part in preventing it.

It also happens to be the most commonly used test.

The Rockwell Test uses specific steps to measure hardness.

Unlike the Brinell Test, it uses a smaller indenter such as a diamond.

This indenter is used to apply a minor load (Increased load/force is applied later) so as to avoid breaking the surface of the material.

This way it proves to be a less destructive method in comparison to the Brinell Test.

 Vickers Test

The Vickers test is ideal for test materials that do not require much load/force but rather increased accuracy during the testing procedure.

Equipped with the sharp point of its diamond indenter, the Vickers test also makes use of an optical system that enables magnification of the material’s target area.

This magnification ability allows the tester to focus on microelements on the surface and thus, be more accurate. This is vastly different from the other tests.

However, compared to the Brinell and Rockwell Tests, the Vickers Test is more expensive due to the preparation required and the cost of obtaining the optical system.

The testing procedure also takes more time than the Rockwell Test.

 Brinell Test

The Brinell Hardness Test method happens to be the very first test that was used widely.

It is usually used to measure the hardness of metallic materials with a specific preference given to materials that are rough.

It also may be the case that the material is simply unsuitable to go through other tests, thus leaving the Brinell test as the sole method of determining hardness.

The Brinell test, however, is not suitable for materials that have hardened too much with hardened steel being one of the obvious examples.

In addition to that, this method also happens to be quite slow in comparison to other tests and tends to make irreparable imprints on the metallic object or material.

So, If you are looking to buy cheap hardness tester, please visit our site www.testhardness.com