24 July 2021 Gear Steel Bar
20CrMoA Gear Steel Bar
20CrMoA alloy steel has higher hardenability, no temper brittleness, weldability is quite good, the formation of cold cracking tendency is small, machinability and cold strain plasticity good.
Generally quenched or hardened carburizing used in the manufacture of non-corrosive media and working temperature below 250 ℃, containing a mixture of nitrogen and hydrogen medium work in the high-pressure pipe and a variety of fasteners, the higher the infiltration Carbon parts, such as gears, shafts and more.
Chemical Composition:
| C | Si | Mn | S | P | Ni | Cr | Cu | Mo |
| 0.17~0.24 | 0.17~0.37 | 0.40~0.70 | ≤0.035 | ≤0.035 | ≤0.030 | 0.80~1.10 | ≤0.030 | 0.15~0.25 |
Mechanical Properties:
Percentage reduction of area | Tensile strength | Yield strength | Notched bar impact strength | Impact energy | Elongation | Hardness |
≥50 | ≥885 | ≥685 | ≥98 | ≥78 | ≥12 | ≤179 |