Which statement about the standard cutting angle of a cold chisel is correct?

Which statement about the standard cutting angle of a cold chisel is correct?

• A. 60 degrees
• B. 70 degrees
• C. 80 degrees
• D. 90 degrees

Answer: (B)

The cutting edge of a cold chisel is designed to balance sharpness with durability. A typical and widely used angle is about 70 degrees. This keeps the edge strong enough to resist chipping when struck with a hammer, while still being sharp enough to shear metal effectively. If the angle were much smaller, the edge would cut easily but wear or chip quickly under impact. If it were much larger, the edge would be blunt and struggle to bite into the material, making cutting harder and requiring more force. So, 70 degrees serves as a practical standard that works well for common metal-cutting work.

The cutting edge of a cold chisel is designed to balance sharpness with durability. A typical and widely used angle is about 70 degrees. This keeps the edge strong enough to resist chipping when struck with a hammer, while still being sharp enough to shear metal effectively. If the angle were much smaller, the edge would cut easily but wear or chip quickly under impact. If it were much larger, the edge would be blunt and struggle to bite into the material, making cutting harder and requiring more force. So, 70 degrees serves as a practical standard that works well for common metal-cutting work.