W1Mo8Cr4VCo3 High-Speed Steel

I. Chemical Composition of W1Mo8Cr4VCo3 High-Speed Steel

W1Mo8Cr4VCo3 exhibits good toughness, strong chipping resistance, and excellent impact resistance. With 3% cobalt content, it also demonstrates superior red hardness and high-temperature wear resistance.

II. Metallographic Structure

Grain size and tempered structure of W1Mo8Cr4VCo3: using quenching at 1190°C + tempering at 560°C for 2 hours, 3 times.

III. Quenching Temperature – Hardness Curve

The hardness values and corresponding curves for W1Mo8Cr4VCo3 after heat treatment (560°C × 2 h × 3 times) are as follows:

IV. Wear Resistance Test

Test plan: Comparative testing of M35 and W1Mo8Cr4VCo3 using boron nitride as the friction medium. Wear resistance test parameters were compared between the two materials.

Heat treatment process for W1Mo8Cr4VCo3: Quenching at 1170°C and 1190°C respectively, followed by tempering at 560°C for 2 hours, 3 times.