Yes, but did he used authentic steel used in medieval times? NOPE. he used plate made from today's wrought Iron that is nowhere near the quality of actual armor used back then (strongly recommend reading Knights and Blast Furnace, which contains a lot of info regarding medieval armor metallurgy, its a 900 pages of detailed study..) . TV shows like the one Mike Loades is doing, needs to be taken with a grain of salt.. they are intentionally creating flame wars to attract viewers.. and same for a longbow, 250yards was not used to represent maximum range, but maximum effective range.. you can shoot flight arrows at double of that range, but they would do no damage to armored men..
If you want to get realistic results, you need to use historically correct manufactured armors, from appropriate material, while your arrow needs to have authentic metallurgy warhead... not many TV shows care about such details... if any... i saw many youtubers who wanted prove their point to show how poorly mail works against arrows.. yet, all they used was cheap Mail replicas from India which can be bought for 300-400$ from amazon... real Mail, made by very few armoures today, with authentic manufacturing process, with properly made rivets, made from authentic metal will cost you over 30.000$... guess how many of those guys would be willing to spend such sum to make a youtube video... none.. it is like testing Airsoft replica ballistic vest against a 9mm pistol, then bashing the real deal ballistic vest to be worthless...