HARDNESS TESTING SHORE A AND D

                                           HARDNESS SCALE

The shore scleroscope measures hardness in terms of the elasticity of the material. A diamond-tipped hammer in a graduated glass tube is allowed to fall from a known height on the specimen to be tested, and the hardness number depends on the height to which the hammer rebounds; the harder the material, the higher the rebound.

Shore hardness is a measure of the resistance of material to indentation by 3 spring-loaded indenter. The higher the number, the greater the resistance.

The hardness testing of plastics is most commonly measured by the Shore (Durometer) test or Rockwell hardness test. Both methods measure the resistance of the plastic toward indentation. Both scales provide an empirical hardness value that doesn't correlate to other properties or fundamental characteristics. Shore Hardness, using either the Shore A or Shore D scale, is the preferred method for rubbers/elastomers and is also commonly used for 'softer' plastics such as polyolefins, fluoropolymers, and vinyls. The Shore A scale is used for 'softer' rubbers while the Shore D scale is used for 'harder' ones. The shore A Hardness is the relative hardness of elastic materials such as rubber or soft plastics can be determined with an instrument called a Shore A durometer. If the indenter completely penetrates the sample, a reading of 0 is obtained, and if no penetration occurs, a reading of 100 results. The reading is dimensionless.

The Shore hardness is measured with an apparatus known as a Durometer and consequently is also known as 'Durometer hardness'. The hardness value is determined by the penetration of the Durometer indenter foot into the sample. Because of the resilience of rubbers and plastics, the hardness reading my change over time - so the indentation time is sometimes reported along with the hardness number. The ASTM test number is ASTM D2240 while the analogous ISO test method is ISO 868.

The results obtained from this test are a useful measure of relative resistance to indentation of various grades of polymers. However, the Shore Durometer hardness test does not serve well as a predictor of other properties such as strength or resistance to scratches, abrasion, or wear, and should not be used alone for product design specifications.

Published by:  Anwar Hussain

5.0 Customers

Hindalco Industries Limited
(Renusagar power Division)
Renusagar, Sonebhadra (UP)


National Thermal Power Corporation
(Vindhyachal Super Thermal Power Project)
Vindhyanagar. MP


National Thermal Power Corporation
Shakti nagar, Sonebhadra, (UP)

Hindalco Industries Limited,
Renukoot., Sonebhadra,
UP 231217


Hi- Tech carbon,
Renukoot, Sonebhadra
(UP) 231217

Bihar Caustics and Chemicals Ltd
Rehla, Palamu, Jharkhand.


L&T INDIA PVT LTD
GOPALA BUILDERS
Rihand Super Thermal Power (A unit of NTPC)
Chaterjee Engineering India Pvt Ltd

4.0 NETWORK AND SITES

Our company’s countrywide infrastructure of M&S and project offices/ Works facilities service companies, sub contractor, agents has been built up and expanded over more than three decades of works.

Corporate & registered office:-
Monem Lining Works,
East of Parasi, Near Hindalco coalgate,
Post- Renusagar, Dist- Sonebhadra
Uttar Pradesh, INDIA -231218
05446 277719
09999048944, 09450165385, 09415359887
monemliningworks@gmail.com

Regional Address
I-755 2nd floor,
Palam Vihar, Gurgaon
122001- Haryana
INDIA
Contact No – 09999048944

Regional Sites
Delhi, Mumbai, Gujarat, Palamu (Jharkhand), MP, Sonebhadra (UP)

3.0 OUR QUALITY POLICY

Monem Lining Works is committed to provide products meeting customer requirements on time to achieve more and more customer satisfaction. We will strive for on going improvements in all our activities by enhancing skills of all our employees through training and motivation.



We also commit to implement, maintain and continuously improve our quality management system as per ISO standard and also commit to fulfill all applicable statutory and regulatory requirements.

Sand Blasting

Sand blasting is process where a certain media is blasted onto metal parts, which in this case can be just a sheet metal, a tank, a door, or even an entire car. The outer layer of paint, primer and body cement is removed as a result of the specified media cutting its way through, revealing the bare metal on the inside.
Generally, most body parts on classic cars are made of steel; which is an alloy of iron (some classics are made of aluminum; which corrodes very slowly) and most of us classic car enthusiasts out there would agree that restoring a classic with a bad body condition isn’t the best of ideas

Epoxy Painting

Epoxy Enamel is a high performance two-pack epoxy resin based paint cured by polyamide activator. It has excellent protection against fresh and salt water, abrasion resistance, chemical resistance and resistant to crude and heavy oils.

Enamel Paint

Enamel paint is a paint that air dries to a hard, usually glossy, finish. In reality, most commercially-available enamel paints are significantly softer than either vitreous enamel or stoved synthetic resins.
Some enamel paints have been made by adding varnish to oil-based paint.
Typically the term "enamel paint" is used to describe oil-based covering products, usually with a significant amount of gloss in them, however recently many latex or water-based paints have adopted the term as well. The term today means "hard surfaced paint" and usually is in reference to paint brands of higher quality, floor coatings of a high gloss finish, or spray paints.