MadSci Network: Engineering

Subject: Why do razor blades go blunt?

Date: Wed Apr 11 19:54:37 2001
Posted by Nicola
Grade level: 10-12 School: Ashcombe
City: Dorking State/Province: No state entered. Country: Surrey
Area of science: Engineering
ID: 987033277.Eg

If hair measures approx. 2-3 on the Mohs scale and Tungsten steel approx.7-8 on 
the same scale, why don't razor blades stay sharp permanently? As we know they 
don't, so what is the cause of their edge losing its sharpness?

Re: Why do razor blades go blunt?

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