Constructional waste is a critical issue in the current scenario which results in uneconomical construction and affects to the environment. Costly material like steel bars comes under scrap category; utilization of such waste has become necessity to lead an economical & sustainable construction. This paper used of waste reinforcement steel bars as steel fibers in the concrete. The experimental study herein is intended to ascertain behavior of torque steel reinforcement fibers (TSRF) in flexural for use in M20 grade of concrete. Improvement in flexural strength and reduction in wastage can be assessed effectively by the study of torque steel reinforced fibers. The testing program involves 27 concrete beam specimens and 18 concrete cube specimens of the M20 grade of concrete, designed as per IS 10262-1982 and ACI mix design methods. Each cube (150X150X150mm) and beam specimen (size700X150X150mm) representing the behavior of concrete in compression and tension. Flexural strength performed on normal concrete and concrete mixed with 8 mm and 10 mm diameter TSRF by 1% of fibers to the volume of concrete, after curing for 28 days. Mix proportion with IS and ACI methods show slightly different while compressive strength shows variation in the permissible limit. The test results show that flexural strength of member is increased by using torque steel fiber. TSRF affect the flexural property by remarkable level. This work leads to assess the properties of M20 concrete by measuring flexural strength, also intended for improvement in strength and properties of concrete. This study encourages for the use of wasted lower diameter steel as TSRF. © 2017 Elsevier Ltd.