When Frost has Blade's sword, he comments that it is acid-etched titanium. However, according to Blade and Whistler, silver is needed to kill vampires. So why does Blade's sword work on them at all?
It works because Blade stabs the vampires in the heart, which kills them. The acid - etched titanium is just so the blade of the sword is extremely sharp!!
Get this, Silver is a very brittle metal, and a sword made of pure silver would likely break on its first use. However, if you mix silver and another, stronger metal (let's say, oh I don't know...Titanium,) the result is a very strong, silver coated sword.
A silver stake or bullet will mess a vampire up real good, but being properly hacked with a katana will do the same. If I recall correctly, the vampires started to disintegrate when hit with the stake, however when hit with the katana, they didn't disintegrate until after they'd been killed by the blow, for example: cut off a hand and the hand disintegrates since it's been removed.
Sorry if I'm wrong, it's been awhile since I saw this movie.
I was just thinking about this today. Blade's sword combines the sharpness of a katana with the durability of titanium, but why the sword has a straight blade, who knows? Perhaps it was just Blade's preference. Getting on to the metal in the sword, it is probably a titanium/silver alloy. Titanium is very strong and very light at the same time. The sword wouldn't be plated with silver because the silver might chip off over time and reduce the sword's effectiveness against Blade's chosen prey. A long blade of pure silver would easily break and dull if you actually used it to strike anything. So therefore, when the sword was made (possibly by Blade himself), the titanium was alloyed with silver and then forged by hand and ground into the shape of the sword. Therefore, a sword that is extremely sharp and light, but at the same time extremely strong and durable, is created.
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