316 stainless steel flat steel Stainless steel flat steel is used as bridge, house frame, fence, transmission ship, vehicle, etc. Chemical composition/% C0.08 Si1 Mn2 P0.045 S0.030 Ni10.0~14.0 Cr16.0~18.0 Mo2.00~3.00 N- Yield strength Ï?0.2/Mpa205 Tensile strengthÏ?b/Mpa520 Elongation´5/%40 HBS187