In the present experimental study, the various strength properties like the compressive strength of concrete and also durability properties like Acid attack and capillary suction test on both ordinary concrete and steel slag Concrete, best steel slag concrete mix is carried out and compared with an ordinary concrete mix for economic and ecological study. In this study different percentage of steel, slag is used. steel slag as a replacement of fine aggregate in concrete and replaced in the range of 0%, 10%, 20 %, 30%, 40% and 50% by weight of fine aggregate in concrete. Mix design has been carried out for M25 grade using relevant Indian Standard IS- 10262: 2009. It was found that with an increase in the amount of steel slag in concrete up to 30% with increasing compressive strength as well as the split tensile strength of concrete. It was also found that durability like acid resistance and alkalinity test conducted for long durability show that addition of steel slag up to 30% certain limit replacement to fine aggregate with less effect compare to control mix