In the light of specific properties of austenitic stainless steel 304 (type Crl8-Ni8) and ferritic stainless steel 430 (type Crl7)
a high-chromium ferritic stainless steel TTS433 (/%: 0.010C
21Cr
0.40Cu
0. 25Nb
0. 20Ti
0. 012N) has been developed by testing and analyzing the effect of Cr
Cu
Nb
Ti element on properties of iron base alloy material. The corrosion resistance of new developed steel is equal to that of austenitic stainless steel 304 and has better formability and weldability. The ferritic stainless steel TTS443 is an idea material to substitute for austenitic stainless steel 304.