Looking for screw machine grade steel that can be hand forged
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    Default Looking for screw machine grade steel that can be hand forged

    I'm looking for 5/32 round steel that threads well and can also be hand forged Threads will be 8-26, cut on a Hardinge DSM, with either Geometric head or round die (depending of cost for custom 8-26 chasers) Will be for banjo hooks, only a couple of dozen at a time

    I'm thinking leaded and sulfured steels might be hot short, yes?

    Picture is of a commercial hook, mine should be much more interesting.
    Attached Thumbnails Attached Thumbnails hook.jpg  

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    Macwhyte flying wires (spelling probably mangled)

    Where stainless, ends looked like that pix, threads where rolled.

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    Don't want stainless, just a simple low carbon steel.

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    Quote Originally Posted by richard newman View Post
    Don't want stainless, just a simple low carbon steel.
    Sounds like you answered your own question. There's no reason why you can't thread low carbon steel. It often won't get forged, but that's got little to do with its forgeability, it's mostly that there's rarely a need to take advantage of forging's strengths. It's usually just better to use a better alloy or something.

    Sounds like WLA is the grade of steel you require for this job.

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    I've not seen the acronym WLA before - whatever's lying around?

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    Quote Originally Posted by awake View Post
    I've not seen the acronym WLA before - whatever's lying around?
    That's the one!

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    16d nails?

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    Quote Originally Posted by richard newman View Post
    Don't want stainless, just a simple low carbon steel.
    I know how to read dumbass.

    You can choke on any further help from me.

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    Quote Originally Posted by richard newman View Post
    I'm thinking leaded and sulfured steels might be hot short, yes?
    That's been my experience, but the commercial hook you showed is probably doable in 12L14.

    I would not hesitate to die-cut 8-26 in 1018 on a DSM. I use 1018 at least as often as 12L14 on that machine.

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    Beat me to it.

    No SS. So, these will eventually have a hydrated ferric oxide finish?



    Quote Originally Posted by David_M View Post
    16d nails?

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    Quote Originally Posted by skytech View Post
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    Wow,this thread got weird! Thought I was asking a simple question, was hoping for a simple answer. Thanks to those who actually addressed the topic.

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    Quote Originally Posted by richard newman View Post
    Wow,this thread got weird! Thought I was asking a simple question, was hoping for a simple answer. Thanks to those who actually addressed the topic.
    I must have missed something in requirements....
    boring, old school W1 would be first choice off initial requirements for me. forges slightly harder than butter, forgiving, forges thru ought section- not on surface only, annealed files and cuts easier than butter, cheap, has some rust issues compared to stainless.

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    The extreme machinability desired for screw-machining comes not only from the composition, but also the condition--heat-treat or cold-work. And a lot of it is low ductility, so that chips break. Not what you want for forming, cold or hot.

    Looks like a part to be cold-headed, then roll-threaded. With those processes, ductility and work-hardening both contribute to a better part.

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    Quote Originally Posted by magneticanomaly View Post
    The extreme machinability desired for screw-machining comes not only from the composition, but also the condition--heat-treat or cold-work. And a lot of it is low ductility, so that chips break. Not what you want for forming, cold or hot.

    Looks like a part to be cold-headed, then roll-threaded. With those processes, ductility and work-hardening both contribute to a better part.
    Yes, I'm sure that's how they are produced commercially. But I only need a few dozen pieces, and can't afford a large tooling or set-up charge. The cost of a custom 8-26 tap is about as much as I can justify.


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