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  1. Loganberry

    Help with passivation

    I use electronic cigarettes and my preferred device uses a stainless steel mesh wick heated by Kanthal wire coiled around it. The obvious drawback is a short between the wick and the Kanthal (about 70% iron, 25% chromium, 5% aliminium). To get around this the Kanthal or SS or both are oxidised...
  2. Loganberry

    Best steel for bolt threads

    Where they actually state the grade of surgical steel they say 316 although often just "surgical steel" but it is a monkey see - monkey do business, so they probably all use 316. Thanks for the replies.
  3. Loganberry

    Best steel for bolt threads

    How much difference is there in terms of longevity of the threads, between bolts made of 304 stainless steel and bolts made of surgical steel. I am a vaper (electronic cigarette user) and the atomisers screw into the battery tubes and the threads on both the atomiser and battery tube are the...

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