To answer your question, we must first truly
understand what you mean by "stronger".
There are two types of mechanical strength,
compressional and tensile.
Compressional strength is how much a
material resists being compressed, or "squished".
Tensile strength is how much a material
resists being stretched. For example, stretching
two ends of a rubber band apart until it breaks
would be an example of tensile strength, whereas a
martial arts master breaking a wooden board with a
punch is an example of compressional strength for
Hair is made of a type of molecule known as
proteins. Proteins tend to have very high
tensile strength and low compressional strength.
In terms of tensile strength, hair is stronger
than steel of the same size, however the opposite
is true for compressional strength.
I hope this answers your question!
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