13 min
America's Iron Giants - The World's Most Powerful MetalworkersMachine ThinkingMachine Thinking is really well produced and super interesting about history of engineering.
Mentioned in r/AskEngineers
Materials
5 videos about materials that people linked on Reddit, from the Materials shelf.
Also see Materials
13 min
America's Iron Giants - The World's Most Powerful MetalworkersMachine Thinking
14 min
Why are metals so stretchy? (2^13 sub special)AlphaPhoenixI recently ran into the YouTube channel AlphaPhoenix (he's also a member on this subreddit). He has a few nice videos that explain materials concepts somewhat more in-depth than SciShow, but without all the math of a textbook. This one is a good example that explains dislocations in metals.
Recommended in r/MaterialsScience
32 min
Uranium Metal From OreCody'sLabHere he is working on, like he says himself, radioactive and toxic materials with unsufficient safety while wearing a "Forget lab safety - I want superpowers" shirt
Mentioned in r/chemistry
17 min
Intro to heat treatment of steel (hardening and tempering)Applied SciencePosted to r/Blacksmith: Intro to heat treatment of steel (hardening and tempering)
9 min
What is Concrete?Practical EngineeringPosted to r/videos: Concrete: The Basics - Practical Engineering