What steel to use
Charter Member
Platinum Member
05-08-2018, 12:23 PM
#6
I talked to him already he does not want to give out his secrets, which I understand he bought blueprints and everything from Mercury paid a lot of money for it . Anyone know a good place to get forged steel
05-09-2018, 01:53 PM
#8
Registered
8620 is just a mild steel.
Even case hardened wouldn't be tough enough to be worth making gears out of.
A tool steel such as 4140 would seem better.
There are a ton of coatings beyond heat treat hardening that could be beneficial.
A nitride might be one.
You will have to consider mating parts.
What do you want harder and last.
What do you want softer and to wear?
Not an easy one size fits all.
Even case hardened wouldn't be tough enough to be worth making gears out of.
A tool steel such as 4140 would seem better.
There are a ton of coatings beyond heat treat hardening that could be beneficial.
A nitride might be one.
You will have to consider mating parts.
What do you want harder and last.
What do you want softer and to wear?
Not an easy one size fits all.
