It could be something such as 1045. Tool holders don’t need to be 4140. That doesn’t mean for certain that they aren’t, but medium carbon steel is fine. 1045 hardens to RC 45 after tempering at 375-400.
Mel
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On Apr 25, 2024, at 1:09?AM, Mike Poore <mpoore10@...> wrote:
?
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
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?
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
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.
