How Do White Walkers Shatter Swords?

For Game of Thrones fans winter is finally here, and with it comes the long foreshadowed White Walkers. These foes have proven to be a dangerous threat for many reasons, but one of the biggest is their seeming imperviousness to the average weapons of the Seven Kingdoms. We've witnessed firsthand what happens when one goes up against a White Walker's icy weapon, but is it really possible for steel to shatter under extreme temperatures the way it's seen on the show? Kyle takes on the black and heads beyond the wall for answers in this week's Because Science! More science: in new tab Watch more Because Science: in new tab Learn More: CHEMISTRY OF SWORD CREATION: in new tab MECHANICAL PROPERTIES IRON AND STEEL: in new tab INTRO TO MATERIALS SCIENCE AND ENGINEERING: HERE QUENCHED STEEL: in new tab BCC AND FCC: in new tab EFFECTS OF LOW TEMPERATURE ON STEEL PERFORMANCE: in new tab #becausescience #GameofThrones #HBO