Week 1 Spur Gear Challenge
Cast steel
Deformation X axis

Stress

Stress Intensity

BRONZE
Deformation X axis

Stress

Stress intensity

Cast iron
Deformation X axis

Stress

Stress intensity

According to above results Bronze works best as for same moment stress generated on the body is less as compared to the other two.
Stress intensity is the the tool is required to know stress concentration on the body.