Hardness is resistance of material to plastic deformation caused by indentation. Sometimes hardness refers to resistance of material to scratching or abrasion. In some cases relatively quick and simple hardness test may substitute tensile test. Hardness may be measured from a small sample of material without destroying it. There are hardness methods, allowing to measure hardness onsite.
Principle of any hardness test method is forcing an indenter into the sample surface followed by measuring dimensions of the indentation (depth or actual surface area of the indentation). Hardness is not fundamental property and its value depends on the combination of yield strength, tensile strength and modulus of elasticity.
Hardness Testing examination facility at PETROCON ENGG. & INSPECTION PVT.LTD , India for piping weld joints & structural welded Joints.SCOPE: This procedure describe the minimum requirements for performing Hardness Testing of Welds in steel based on stated requirements of relevant project specifications and the Reference Codes and standards applicable for procurement & fabrication Ref. ASTM SE-10. TESTING EQUIPMENT
a) Portable Hardness Tester HT-7 Make- Optel ,Energy- Quotient Impact Device (D) Tungsten Carbide Ball ( 3 mm Dia.)& Mi-tech china.
b) Functions of HT-7 is an advanced hand held hardness tester, characterised by its High Accuracy, wide Measuring range & Simplicity of Operation, It is suitable for testing the hardness of metals and alloys, and is widely used in many industrial fields, such s petroleum and Chemical plants, heavy machinery and electric and power Industries. Etc.
c) Typical application are: In-Situ Measurement on machines and Heavy parts of assembled system.
d) To display hardness value in any scale ( HL, HRC,HRB,HB,HV &HSD )
Strong team of NDT Level 2 certified professionals to provide hardness testing services across India.