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Re: Insert Holder Alloy

 

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I did a search for that number. The indicates that is the Swedish equivalent to 4340.

Sorry for wasting everyone's time. I hate when people ask easily answered questions and I am guilty. I found this that lists the HT specs for most alloys. 1550F is within the annealing range of almost every alloy on the list. 1500F is within the hardening range for almost all alloys. I will have to do more research on tempering, but for an insert holder there should be a wide tolerance.

On 4/25/2024 1:17 AM, Andrei via groups.io wrote:

Found a reference online to SS2541 being used for tool bit holders. Maybe check that.?

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From: [email protected] <[email protected]> on behalf of Mike Poore <mpoore10@...>
Sent: Thursday, April 25, 2024 1:09:21 AM
To: [email protected] <[email protected]>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
The problem is I do not know the alloy. I guess I will use the 4140 specs.

On 4/25/2024 12:59 AM, Andrei via groups.io wrote:
That is definitely a great option. I don't have one so my go-to was carbide and coolant.youbare in great shape with the oven

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From: [email protected] <[email protected]> on behalf of Mike Poore <mpoore10@...>
Sent: Thursday, April 25, 2024 12:57:57 AM
To: [email protected] <[email protected]>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
I have a heat treating oven right next to my mill, so I would rather use the oven.

On 4/24/2024 11:02 PM, Andrei via groups.io wrote:
Are short of squirter bottles or endmills?

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From: [email protected] <[email protected]> on behalf of Mike Poore <mpoore10@...>
Sent: Wednesday, April 24, 2024 10:38:03 PM
To: [email protected] <[email protected]>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
Not an option for me.

On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal

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From: [email protected] <[email protected]> on behalf of Mike Poore <mpoore10@...>
Sent: Wednesday, April 24, 2024 9:41:39 PM
To: [email protected] <[email protected]>
Subject: [SouthBendLathe] Insert Holder Alloy
?
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating again, so I would like specs to use.




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