Full Transcript:

What’s up guys? This is Michael with Michael Talks Metal back for another session on some metal. Before we jump in 90% of you are not subscribed. How about if you are 9 of the 10 people watching, just ONE of you subscribe? If not, drop a like. Ok enough of that! Let’s do this.

So what is L-605 or in the UNS system R30605? Well , it’s an alloy consisting primarily of Cobalt, with Nickel, Chromium, and Tungsten forming a solid solution. L-605 cannot be strengthened by heat treatment but can be strengthened by cold work.

The alloy offers resistance to wear and galling in addition to high temperature strength and oxidation resistance at temperatures up to  2000 deg F. Applications include rings and blades in gas turbines and other combustion chamber components.

In Aerospace applications, the applicable AMS specifications  require  that the material has been  Consumable Electrode Vacuum Melted ( aka CEVM) .

L-605 UNS R30605 Chemical Composition: 
Carbon0.05 – 0.15 %
Manganese1.0 – 2.0 %
Silicon.40 % Max
Phosphorus0.040 % Max
Sulfur0.030 % Max
Chromium19.0 – 21.0 %
Nickel9.0 – 11.0 %
Tungsten14.0 – 16.0 %
Iron3.0 % Max

Density is  .335 Lbs per cubic inch

Permeability at 200 oersted is 1.002

Solution treatment is typically in the range 2150 to 2250 deg F  and rapidly cooled to prevent carbide formation

Mechanical properties:

Tensile strength    125, 000  psi Min

Yield strength           45,000  psi Min

Elongation                         30 % Min

L-605 Specifications: 
AMS 5759Bar
AMS 5537Sheet and Strip

AMS specifications contain many additional requirements than just what we have shown you today.  Other specifications and part requirements can also apply.

So  CHECK the SPECS !!!!!!! This is Michael with Michael Talks Metal and if you made it this far and haven’t subscribed, please do so. If you have missed any of our previous videos, not sure how (or if you have trouble sleeping) click here.