Outstanding E52100 Steel Shot Peening Technology - China

Why is E52100 steel particularly suitable for and in need of shot peening? The typical chemical composition of E52100 steel is approximately 1% carbon and 1.5% chromium.

After quenching and low-temperature tempering, it produces a high-hardness martensitic structure with uniformly distributed carbide particles.

* High Hardness and High Strength: After heat treatment, the hardness can reach HRC 58-65 - While inherently strong, its fatigue performance is highly sensitive to surface defects (such as microcracks, grinding burns, and non-metallic inclusions).

* Sensitivity to Tensile Stress: High-hardness materials typically have lower toughness and are more sensitive to crack propagation caused by surface tensile stress.

* Typical Application Conditions: Components such as bearings and gears are subject to extremely high alternating contact and bending stresses during operation, making fatigue cracks highly susceptible to initiation at stress concentration points.

Therefore, shot peening can effectively introduce a layer of residual compressive stress on the surface of E52100 steel parts, effectively offsetting these detrimental tensile stresses and pushing fatigue crack initiation from the surface to the subsurface, significantly extending part life.

Summary

Shot peening is an essential and proven surface strengthening technology for E52100 steel.

Through carefully controlled process parameters, it introduces a beneficial layer of residual compressive stress on the part surface, significantly improving the fatigue life of parts under alternating loads.

To achieve optimal results, key parameters such as shot peening intensity, coverage, and shot type must be determined and strictly controlled through experimental testing based on the specific part geometry, hardness, and service conditions.

Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

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