Supply 9crsi, 9crsi round 9crsi steel 9crsi price

9crsi, 9crsi round, 9crsi steel, 9crsi price chemical composition Carbon C: 0.85 ~ 0.95 Si Si: 1.20 ~ 1.60 Manganese Mn: 0.30 ~ 0.60 Sulfur S: ≤0.030 phosphorus P: ≤0.030 chromium Cr: 0.95 ~ 1.25 Ni-Ni: ≤0.25 allow the residual content Copper Cu: to allow the residual content of ≤0.30