Are SumToy Choke Tubes Hardened?

A discussion about Turkey guns, rifles, black powder, handguns, chokes, cleaning, and accessories.
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duurmeehr
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Joined: October 27th, 2015, 4:54 pm

Are SumToy Choke Tubes Hardened?

Post by duurmeehr »

I have heard they make some of the best.

I am guessing a choke tube has to be hardened but don't know for sure how that works?
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Sloppy_Snood
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Re: Are SumToy Choke Tubes Hardened?

Post by Sloppy_Snood »

Work hardened from machining: yes.

Depending on the steel utilized for the choke, the metal itself could be pre-hardened before it is even machined.

Several suitable steels exist for choke tubes but many utilize 17-4 PH stainless steel. PH represents "precipitation hardened."

Very few choke manufacturers harden their chokes after machining though.
Last edited by Sloppy_Snood on February 15th, 2018, 6:59 pm, edited 1 time in total.
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duurmeehr
Posts: 154
Joined: October 27th, 2015, 4:54 pm

Re: Are SumToy Choke Tubes Hardened?

Post by duurmeehr »

I hope he does, I am curious.

Only info I could find was from Jebs. It said they send the 17'4 bar stock and harden before machining. Kind of funny, I figured it would make it to difficult to machine after hardening.
matchbook454
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Joined: April 10th, 2016, 6:40 pm

Re: Are SumToy Choke Tubes Hardened?

Post by matchbook454 »

There are different heat treat specs. We machine heat treated 17-4 quite a lot. Again, heat treating has a range so it can be a little bit harder or a lot harder. If you know what you’re doing it isn’t really difficult to machine, just slower to machine.
taylorjones20
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Re: Are SumToy Choke Tubes Hardened?

Post by taylorjones20 »

I know that Rob Roberts chokes are hardened. I was in their shop and there was some shiny chokes and then I seen their regular colored chokes. He said that's the color after they're hardened...
coconut
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Re: Are SumToy Choke Tubes Hardened?

Post by coconut »

What would be the advantages and disadvantages of hardening?
matchbook454
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Joined: April 10th, 2016, 6:40 pm

Re: Are SumToy Choke Tubes Hardened?

Post by matchbook454 »

Harder would be tougher/stronger.
matchbook454
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Joined: April 10th, 2016, 6:40 pm

Re: Are SumToy Choke Tubes Hardened?

Post by matchbook454 »

Also, depends on their process. They can rough machine soft, send out for heat treat, then finish turn the hardened choke.
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