120 hour ultimate test: 7 types of steel piston materials, who can withstand oxidation the most?

2026-05-29

Pistons serve for a long time under high temperature, high pressure, and alternating loads, and their antioxidant performance directly determines the engine's lifespan and reliability.
To simulate extreme working conditions, we conducted a 120 hour continuous oxidation test on 7 different steel piston materials.
The following is a visual comparison of the surface oxidation degree and cross-sectional metallographic structure of each material after the experiment.

The metallographic preparation and microscopic analysis of all samples in this experiment were completed by LABTT equipment - from precise cutting to high-definition imaging, ensuring the authenticity and clarity of the comparison results throughout the process.
If you need to learn about the complete solution for LABTT metallographic sample preparation and microscopic analysis, please feel free to contact us.

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120 hour ultimate test: 7 types of steel piston materials, who can withstand oxidation the most?

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