Automotive Diagnostics, Torque & Trailer Wiring

Why must you use Chrome-Molybdenum (Cr-Mo) impact sockets instead of shiny Chrome-Vanadium sockets on an impact wrench?

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 Correct IncorrectCr-Mo steel has ductile toughness that absorbs concussive impact blows without shattering. Shiny chrome-vanadium sockets are brittle under impact and explode into high-velocity fragments.

Why must you use Chrome-Molybdenum (Cr-Mo) impact sockets instead of shiny Chrome-Vanadium sockets on an impact wrench?

• Chrome-Vanadium only fits metric nuts
• Impact sockets are painted black so they don't reflect sunlight
• Ductile Chrome-Moly absorbs rotational hammer impacts, whereas brittle chrome sockets shatter into flying shrapnel
• Chrome-Moly sockets weigh less than aluminum