Based on the comprehensive performance of "durability + cutting effect", the mainstream blade materials for remote-controlled lawn mowers are ranked as follows: Cemented Carbide (WC/Co) ≈ Powder Metallurgy High-Speed Steel (PM-HSS) ＞ Ordinary High-Speed Steel (HSS) ＞ Manganese Steel / Alloy Steel ＞ White Steel (Tool Steel) ＞ Plastic / Nylon Grass-Cutting Rope. Among them, cemented carbide and PM-HSS are significantly ahead in wear resistance and sharpness retention, making them suitable for heavy-load and long-duration operations; ordinary HSS has high cost-effectiveness, ideal for regular maintenance; manganese steel is more impact-resistant but has average sharpness, suitable for thick grass / wasteland; white steel is sharp but not wear-resistant; grass-cutting rope is only used for light trimming.

Overview of Material Comparison (Durability × Cutting Effect)

How to Choose the Most Suitable One?

• Prioritize for large-area / heavy-load / long-service-life needs: Choose cemented carbide or PM-HSS; both excel in wear resistance and sharpness retention, but have higher costs.

• For regular maintenance / cost-effectiveness: Choose ordinary HSS, which balances sharpness and durability and meets the needs of most scenarios.

• For complex terrain with frequent impacts (gravel / thick stems): Choose manganese steel / alloy steel, which has strong impact resistance but is inferior to HSS / cemented carbide in sharpness and service life.

• For light trimming / limited budget: Choose white steel or grass-cutting rope; they have low costs but need to be replaced more frequently.

Tip

Cutting performance depends not only on the material but also is closely related to the blade edge geometry, surface coating (e.g., TiN/CrN/DLC), heat treatment, and manufacturing process; the performance of the same material can vary several times depending on different processes.