1144 carburized
1144 carburized
(OP)
Man, I love 1144 questions. As usual, everyone that is not a metallurgist wants to use it for everything. I have induction hardened, flame hardened, marquenched, austempered (!), oil and water quenched, fixture tempered, carburized, unameitidunit. It just machines so well and is much cheaper than those expensive high-end alloys like 8620.
My question is this: Are you aware of a use for this material for gears that is carburized? What is your experience?
Thanks in advance for any information you can provide.
My question is this: Are you aware of a use for this material for gears that is carburized? What is your experience?
Thanks in advance for any information you can provide.





RE: 1144 carburized
Typically carburized gear steels have maximum carbon contents of ~0.2%. The aim of the low carbon core is to provide a material with reasonable toughness after the low temperature temper of the case.
RE: 1144 carburized
1144 carburized, hardened, tempered 350F will be very hard at the surface, and will be at or over 50 HRC in the core (not over 1/2" cross section). If toughness is not a requirement yet high wear properties are, then there seems to be no reason to avoid 1144.
RE: 1144 carburized
RE: 1144 carburized
RE: 1144 carburized
keyway.
RE: 1144 carburized
RE: 1144 carburized
RE: 1144 carburized
Bethlehem Steel
Circa. 1952
RE: 1144 carburized
http://www.timken.com/timken_ols/steel/handbook/
RE: 1144 carburized
You must have my copies of the Bethlehem book, I used to have 3 of them and they disappeared. I've been looking for them.
RE: 1144 carburized
1144 as quenched (water):
Looking at the data for 1/2" round the surface is 58 RC, 1/2 radius is 53 RC, and the center is 50 Rc.
For 1" the surface is 57 RC, 1/2 radius is 33 RC, and the center is 29 RC.
RE: 1144 carburized
There was some lead in some A2? That does not sound good.
Thank you for the info.