Bucket Teeth for Excavator 61L3-0169 for HL17/740/750 Aftermarket Parts

Production of Construction Machinery Cutting Blades—Material Selection and Pre-Treatment Stage

Steel Grades and Performance Requirements

In the manufacturing of construction machinery cutting blades, material selection is a critical factor determining product performance. The industry currently predominantly utilizes the following three categories of steel:

High-Hardness Wear-Resistant Steel (e.g., NM400):

• Brinell hardness: 360–450 HB

Yield strength ≥900 MPa

Tensile strength ≥1100 MPa

Typical applications: Heavy-duty conditions like excavator bucket teeth and loader cutting edges

Alloy Steel (e.g., Chromium-Vanadium Steel):

Contains alloying elements like Cr and V

Hardness HRC 50-55

Combines wear resistance and toughness

Typical applications: Bulldozer blades, grader blades

High-Manganese Steel:

Mn content: 11-14%

Excellent work-hardening properties

Outstanding impact resistance

Typical applications: Mining machinery blades, crusher tooth plates