Material Name: 60Si2CrA
Standard: GB / T 1222-1984
Features and application:
60Si2CrA spring steel, compared with Si-Mn steel, while plastic similar, with high tensile strength and yield strength, greater hardenability of steel, have temper brittleness. 60Si2CrA to withstand high stress and temperature at 300 ~ 350 ℃ the following spring, such as the governor springs, turbine steam seal springs, disc springs high-pressure water pump, condenser bearing springs and other spring breakers to use.
Chemical composition
Carbon C: 0.56 ~ 0.64
Si Si: 1.40 ~ 1.80
Manganese Mn: 0.40 ~ 0.70
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.030
Chromium Cr: 0.70 ~ 1.00
Ni-Ni: ≤ 0.35
Copper Cu: ≤ 0.25
Mechanical properties
Tensile strength σb (MPa): ≥ 1764 (180)
Yield strength σs (MPa): ≥ 1568 (160)
Elongation δ5 (%): ≥ 6
Reduction of area ψ (%): ≥ 20
Hardness: hot-rolled + heat treatment, ≤ 321HB; cold-drawn + heat treatment, ≤ 321HB
