Why the total elongation is so important in self drilling anchor bolt
Time:2022-06-10 14:48:18From:This Site

Elongation is important in manufacturing as it measures how much bending and shaping a material can withstand without breaking.  Elongation is inversely proportional to hardness, tensile strength, and modulus.  The greater a material's hardness, tensile strength, and modulus, the less it will elongate under stress.


Agt, which is the percentage total elongation at maximum force, is that measure of elongation which excludes that considerable and highly localized extension of the steel under test in the area of plastic instability adjacent to the point of fracture.


Ductility is a measure of the degree of plastic deformation that has been sustained at fracture. A material that experiences very little or no plastic deformation upon fracture is termed brittle. The value of Agt can denote the ductility. For the sake of safety, the minimum number of 5% Agt is required for all Slef Drilling Anchor bars. Sinodrills guarantees minimum 6% in Agt.



SINODRILLS Self Drilling Anchor Bars



Economical Type


Standsrd Type


Agt >6%


Agt >10%


100%


100%