what is the stress and strain for nichrome wire?
Modulus is 2.2 × 10^11Pa
Not sure what exactly you need, but you can calc. a lot of what you need.
Nichrome wire is the preferred wire, because it has known electrical properties (resistance per foot, heat to amperage ratio, etc etc). But there is a bit of sag that occurs with nichrome wire, that is really difficult to eliminate at lengths greater than 2-3 feet....