Skip to main content

Best Metal Testing in Chennai

 Metal materials are used in a myriad of applications in today's world. There are a wide variety of physical and chemical properties of metals that can be tailored to specific engineering applications. There are many reasons to conduct testing of metals both in the research stage when metal materials are being developed and in the application stage when they are being produced and used in specific applications.

There are many types of tests that are available for metals. The following are some of the more common types of tests and the reasons for their importance:

Chemical analysis: The composition of metal testing in Chennai is very important as it can dictate a number of properties once they are placed in service. These include corrosion resistance, creep resistance, strength, reaction to heat treatment, electrical properties, hardness/wear resistance, etc. Chemical analysis can be performed in a number of ways including Optical Emission Spectroscopy (OES), wet chemical analysis (generally refers to chemistry performed on samples in the liquid phase), Leco combustion method (carbon, sulfur, nitrogen, oxygen in steels), X-ray Fluorescence (XRF), etc.

best metal testing in Chennai

Hardness Measurement: The hardness of a metal is often considered the most important measured property as it is used in design and quality control and can be measured relatively easily (and inexpensively). The hardness can give an indication of strength and success of a heat treatment process (especially with steels). Standard hardness measurement techniques include Rockwell (standard and superficial), micohardness (Vickers and Knoop), Brinell and file. The hardness measurement method used is usually dictated by the sample geometry and general hardness level. For large samples, the Rockwell and Brinell methods can be readily used. For very small samples a microhardness method may be required as the indentation used to measure hardness is extremely small (measured using a microscope). Microhardness is used to document the hardness profile in a metallurgical case. File hardness is very easy to use and is often used in the field to get general hardness measurements. Files of differing hardness levels are used to determine the hardness range of a sample.

Tensile Testing: The strength of a metal material is often the most important characteristic when the initial engineering is performed and the material is selected for a specific application. The properties of greatest interest when performing tensile testing are yield strength, ultimate tensile strength and elongation. Tensile tests are performed using samples that have been prepared to a specific test geometry. The tensile tester pulls the sample to failure and creates a stress/strain curve which allows for the determination of the yield strength, ultimate tensile strength and amount of elongation. The yield and ultimate tensile strengths are reported in pounds per square inch (or some other scale with a force per unit of area) and elongation is reported in percent.

Metallography: The internal structure of a metal material (microstructure) can be evaluated after samples have been carefully prepared and examined at high magnification using a metallograph. The samples typically are sectioned and placed in a metallographic mount that allows for easy laboratory handling while the sample surface of interest is polished to a mirror-like finish and etched to reveal the internal features. A trained metallurgist can examine the etched sample with a metallograph (special microscope) to examine and measure features such as grain size, inclusion content, phases present (ferrite, pearlite, martensite, bainite, austenite in steels). The phases and grain size usually have a bearing on the material strength, hardness, fatigue resistance, corrosion resistance, toughness, etc. so it is very important to examine the internal structure of the best metal testing labs in Chennai.

A variety of other more specialized tests are used and include corrosion testing, surface roughness, hardenability, impact and bend testing to name a few. Specific applications often dictate the use of specialized tests.


For more details visit us @ http://www.tamilnadutesthouse.com

Source: http://ezinearticles.com

Comments

Popular posts from this blog

What is Animal Feed testing ?

Animal feed testing labs in Chennai analyze samples of animal feed to assess their nutritional composition, quality, and safety. Here's an overview of the process involved in animal feed testing: Sample Collection: The first step is to collect representative samples of the animal feed to be tested. Samples should be collected following proper sampling procedures to ensure accuracy and reliability. Preparation of Samples: Once collected, the samples may need to be prepared or homogenized to ensure uniformity and consistency. This may involve grinding, mixing, or sub-sampling the feed samples as needed. Selection of Testing Parameters: Depending on the specific requirements and objectives of the testing, various parameters may be analyzed, including: Nutritional Composition: This includes testing for moisture content, protein content, fat content, fiber content, carbohydrate content, and mineral content. Contaminants : Testing may be conducted to detect contaminants such as afla...

What are the symptoms of vitamin A deficiency?

Vitamin A deficiency can lead to a range of symptoms, and its severity can vary. Vitamin A is crucial for various bodily functions, including vision, immune system function, and skin health. Here are some common symptoms of vitamin A deficiency: Night Blindness: One of the earliest and most characteristic signs of vitamin A deficiency is difficulty seeing in low-light conditions or night blindness. This occurs because vitamin A is essential for the synthesis of rhodopsin, a pigment in the eyes that helps with low-light vision. Dry Eyes and Xerophthalmia: Insufficient vitamin A can lead to dryness of the conjunctiva and cornea, causing a condition known as xerophthalmia. In severe cases, it can lead to corneal ulcers and blindness. Skin Changes: Vitamin A plays a role in maintaining healthy skin, and its deficiency can result in various skin issues. Dry, rough skin, as well as the development of follicular hyperkeratosis (thickening of hair follicles), may occur. Impaired Immune Functio...

The Attenuated Total Reflectance (ATR) technique is used in FT-IR spectroscopy

Attenuated Total Reflectance (ATR) is a powerful measurement technique used in FT-IR spectroscopy. Let’s explore its applications and how it works: 1. Identification of Chemical Compounds:  ATR-FTIR spectroscopy helps identify chemical compounds by analyzing their unique infrared absorption patterns.  It’s particularly useful for characterizing organic and inorganic materials. 2. Studying Molecular Structures:  ATR provides insights into molecular structures, including functional groups and bonding arrangements. Researchers use it to investigate polymers, proteins, and other complex molecules. 3. Surface Properties Examination:  ATR allows surface analysis without extensive sample preparation.  It’s valuable for studying thin films, coatings, and interfaces. 4. Analyzing Polymers:  Polymer characterization benefits from ATR due to its ability to analyze solid samples directly. Researchers study polymer composition, additives, and degradation. 5. Biomolecule...