In case of many brittle materials such as high carbon steels, alloy steels, light aluminium & magnesium alloys, it is difficult to get yield values. For such materials stress corresponding to a certain allowable amount of plastic deformation is termed as proof stress say 0.1% or 0.2% proof stress, The measuring range is upto 5mm & resolution is 0.001mm, Standard two fixed gauge lengths of 25 & 50 mm is provided. Different sizes gauge lengths can also be given at an additional cost, If this extensometer is ordered with a computerized UTM, then a special menu driven application software is provided, which accepts load & extension values, & evaluates proof stress values, The measurement accuracy satisfies all requirements of class-I as per IS:12872-1990.
V N Patankar (FINE SPAVY ASSOCIATES & ENGINEERS PVT. L)
c 45 midc miraj, Sangli, Maharashtra - 416410, India
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