Pyrometallurgy: Roasting, Smelting, Refining & Electrowinning

Pyrometallurgy: Roasting, Smelting, Refining & Electrowinning2017-04-21T02:33:06-04:00
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How to Harden Tin/Bismuth Alloy? (2 replies)

johnywhy
9 months ago
johnywhy 9 months ago

This question concerns the making of alloys for casting.

I need a low-toxicity, low-melting point metal, to cast hardware parts.
The parts must not crack under torque or impact, and should remain hard up to 100 deg C.

My plan is to make a Tin/Bismuth alloy, since low-toxicity, low-melting point.
I've heard a tiny amount of silver can make this alloy less brittle.

Any suggestions? Could be a different alloy, or a hardening process.

thx!

johnywhy
9 months ago
johnywhy 9 months ago

I mean, parts should remain hard after casting. 

johnywhy
9 months ago
johnywhy 9 months ago

I'm not committed to tin, bismuth, or silver. But need to keep things relatively low-toxic and low-temp. (home, indoor fab). Need to minimize shrinkage/expansion of cast part. 

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