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I remember in one of my materials classes they used bras as an example where martensitic metals were used. Apparently these materials were chosen to help bras

by physcab 17y ago

I remember in one of my materials classes they used bras as an example where martensitic metals were used. Apparently these materials were chosen to help bras retain their shape (such alloys are also called shape-memory alloys). However, shape memory alloys usually deform back once heated. I've always wondered if this was true. Anyone who has ever washed theirs in hot water want to confirm?

Mz 17y ago
Generally speaking, it's a bad idea to toss bras in a washer and dryer on high heat. Ideally, they should be hand-washed. If that's too much hassle, one should at least put them in mesh lingerie bag so the straps don't get all tangled up with parts of the washer and other clothes, which tends to deform the straps. The hooks of a bra can also get caught on other clothing and damage the other clothing. Washing bras in hot water generally shortens their lifespan. A good bra can be quite pricey so some women who hand-wash nothing else do hand-wash their bras, especially if they are hard to fit.