Here is the material list from WinSteel. This list is quite extensive and lists several varieties of 18MnCr but no 18MnCr Ti. Is it possible that someone misread 18MnCr 11 for the Ti part.
Several references refer to these steel as case hardening varieties.
I found a British company, John King Chains by Googling on the spec number and found a pdf file which explains how they use this grade of steel for their chains.
"Manganese Alloy Steel (18MnCr B5)
Case Hardened (MN Grade)"
although the Ti designation was not included.
Also, I found a reference to it (18MnCr) in a book on Google Books titled, "Smithells Metals Reference Book, Eighth Edition" but as you know the Google books are so fuzzy you can't read anything, so I looked it up on Amazon and found it. It had the "Look Inside" feature so I was able to find the same page (Table 22-50) and copy it off.
It is shown as a material spec for Forged or Rolled Steels and their mechanical properties. It is a steel with the DIN requirement of X40MnCr18. It gives the composition and other properties and in the "Remarks" column it says, "Non-magnetic end bells for alternator rotors."
As promised above: The "Stahlschlüssel" mentions several 18MnCr steels, however none with the Ti suffix.
That would either mean it's tailor-made (not according to any publuc-known (ASME/Din) regulations or specifications), or it doesn't exist
German standard high strength low alloy steels for case hardening include
16MnCr5 (0.16%C, 1.25%Mn, 1.1%Cr)
20MnCr5 (0.2%C, 1.25%Mn, 1.1%Cr)
18MnCrB5 (0.18%C, 1.25%Mn, 1.1%Cr, Boron treated)
Widely used for forged chain links in bulk materials handling.
20CrMnTi A26202
looks like a Chinese low alloy steel sheet grade or a slight modification with copper addition falls under cold drawn steels for industrial chain
C 0.17-.23 mass %
Si .17-.37
Mn 0.8-1.0
P 0.035
S 0.035
Cr 1.0-1.30
Ni 0.30 or less
Ti .04-0.10 (Cu 0.30 or less)
This is going off on a tangent but, You mentioned 20CrMnTi.
We have been getting gears made from this alloy. We are starting to see failure not on the gear teeth but on the bearing journal. In the past we have been using 8620 or 4320. Does anyone have any expreience with these different alloys. The application is for hydraulic pumps and motors.
We case harden and oil quench followed by -100 F treatment.
The case is .04 to .05 deep after grind.
edendebrock;
Please start a new thread. Also, when you post the new thread, please state what type of bearing journal damage. This would help in obtaining better responses.
