Application and chemical composition of 55SiMn
55SiMn Product Model: Spring Steel
Low content of alloying elements, high toughness and plasticity, low decarburization tendency, good tempering stability, good hot workability and low cost. Replace 60Si2MnA to produce leaf springs for heavy, medium and small cars and other leaf springs and coil springs of medium-sized sections.
●Chemical composition:
Carbon C: 0.52～0.60
Silicon Si: 0.70～1.00
Manganese Mn: 1.00～1.30
Sulfur S: ≤0.035
Phosphorus P: ≤0.035
Chromium Cr: ≤0.35
Nickel Ni: ≤0.35
Copper Cu: ≤0.25
Vanadium V: 0.08～0.16
Boron B: 0.0005～0.0035