Saturday, November 24, 2012

Green Materials What is the material old-fashioned school chalkboards are made from?

Question by sportshistorybuff: What is the material old-fashioned school chalkboards are made from?
What is the green or black material called which make up older chalkboards in school? I assume it’s some kind of synthetic material.

Best answer:

Answer by PhDuh
Porcelain-enamelled steel. In other words, they are a combination of ceramics and metal.

At first, I was going to say slate, as this was the original natural stone material that early chalkboards were made of, but then realized that “old fashioned” didn’t mean THAT old-fashioned.

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Tags:chalkboards, from, Green, made, material, Materials, oldfashioned, School

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