55SiMn spring steel

 55SiMn spring steel with low alloy content, toughness, high plasticity, a small tendency to decarburization, tempering good stability, thermal processing performance and low cost. 55SiMn 60Si2MnA production instead of heavy, medium and small cars, and other medium-sized cross-section of leaf spring leaf spring and coil spring.

 ● Chemical Composition:

 Carbon C: 0.52 ~ 0.60

 Si Si: 0.70 ~ 1.00

 Manganese Mn: 1.00 ~ 1.30

 Sulfur S: ≤ 0.035

 Phosphorus P: ≤ 0.035

 Chromium Cr: ≤ 0.35

 Ni-Ni: ≤ 0.35

 Copper Cu: ≤ 0.25

 Vanadium V: 0.08 ~ 0.16

 Boron B: 0.0005 ~ 0.0035