possible resistens to Shardblade

[Blessed peace he/him]

warning: contains spoilers for mistborn era 1

as we know, shardblades can slice through anything but aluminium and other invested items like shardplates and half-shards (and possibly enlived objects).
but if I understand correctly what was written in "hero of the ages" and "secret history", on scadrial any kind of metal used in the metallic arts is invested, and by that preservation blinded ruin.
and if it is so, that every shred of metal from scadrial is invested, wouldn't it suggest that a simple scadrian sword would be able to withstand a hit from a shardblade?

[Weltall]

Welcome to the Shard!

Metal on Scadrial is not itself Invested (except for atium, lerasium and harmonium) but instead acts as a sort of conduit to the power of Preservation in the Spiritual Realm. As far as the Metallic Arts are concerned, metal from anywhere in the Cosmere will work as long as it's the right purity or for alloys, composted of the right ratio.

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Zmann966

Is the metal on Scadrial specially Invested? Can an Allomancer use metals from other planets?

Brandon Sanderson (Part 1/Part 2)

Metal is a key, not the source of power itself. Most is not specially Invested. It glows because of the power seeking to come through it, not because of the power within it.

source

Now, a feruchemical metalmind can block a Shardblade because in that case, the metal has been Invested by the user.

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Yata

Could a filled (fully feruchemical charge) metalmind block a Shardblade (or at least, resist a bit)?

Brandon Sanderson

Yes, it could. Excellent question.

source

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Questioner

How many smacks would it take from a Shardblade to break, say, a metalmind.

Brandon Sanderson

A metalmind? Depends on how much it's invested.

source

Separately Brandon mentioned tha a hemalurgic spike would also resist being cut.

Edited August 14, 2018 by Weltall