Thanks for the reply everyone.
Yes this is a special kind of steel and i have no more data other than the one mentioned.
firstly, ABAQUS gives the plastic strain at first must be zero. Secondly, if I draw the stress-strain curve with the mentioned input then it do not represent exactly the same curve that I am supposed to represent (i.e. instead of having both stress and strain negative in compression, the input data will indicate negative strain only).