Special material chains

[Charon's Little Helper]

Curious - what would be the stats for special material chains? Mithril / Adamantium.

I'm considering making a monk who does a decent bit of grappling and ties up his foes. Even a basic chain is harder to break than any rope. But if I want to have any chance for it to hold higher level foes with strength 26+ - a normal chain won't cut it. Too easy to burst with a strength check.

I know that a mithril chain would cost 500 gp - but not the strength DC to burst it - and I know neither about adamantium? Are there any official rulings?

[Secane]

Mithril chain is 1030gp.

30gp for the price of normal chain

+1000 for the 2lbs of normal chain. (+500 gp for 1lb of the original item. Normal Chains are 2lbs)

My GM set it at 30 DC. The same as a Mithral Manacles.