20CrNi3A alloy structural steel

20CrNi3A has good hardenability and can obtain uniform strength in a large cross-sectional range. After quenching and tempering or quenching and low temperature tempering, it has good comprehensive mechanical properties.

20CrNi3A Features:
Good machinability, medium cold deformation plasticity and weldability. It has the sensitivity to form white spots, and tends to be temper brittle when tempered at high temperature.

20CrNi3A chemical composition:
Carbon C: 0.17～0.25
Silicon Si: 0.17～0.37
Manganese Mn: 0.30～0.60
Sulfur S: ≤0.030
Phosphorus P: ≤0.030
Chromium Cr: 0.60～0.90
Nickel Ni: 2.75～3.25

20CrNi3A mechanical properties:
Conditional yield strength σ0.2 (MPa): ≥835
Area shrinkage ψ (%): ≥55
Impact toughness value αku (J/cm2): ≥98
Hardness: 341～292HB

20CrNi3A is used for gears, shafts, worms, bolts, pins, etc. that work under high load conditions.

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