Alloy L605 Introduction to Characteristics and Execution Standards

Alloy L605 Introduction to Characteristics and Execution Standards

Common Trade Names: Haynes 25; Alloy L605;

Alloy L605 UNS R30605, Excellent strength, good oxidation resistance to 1800°F (980°C), very good sulfidation resistance, and relatively good resistance to wear and galling. Used in gas turbine parts, bearings, and various industrial applications. 

Alloy L605 alloy is a cobaltnickel-chromium-tungsten alloy that combines excellent high-temperature strength with good resistance to oxidizing environments up to 1800° F (980° C) for prolonged exposures, and excellent resistance to sulfidation. It can be fabricated and formed by conventional techniques, and has been used for cast components. Other attractive features include excellent resistance to metal galling.

Available Product Forms: 

Material is produced in the form of plate, sheet, strip, billet, bar, wire, coated electrodes, pipe and tubing.

Specifications:Alloy L605 is designated as  R30605.

Rod, Bar, Wire and Forging Stock:   AMS 5759 (bar, rings and forgings),Plate, Sheet and Strip:  AMS 5537 (sheet, strip and plate).

Other:   AMS 5796 (welding wire), and AMS 5797 (coated welding electrodes).

Chemical Composition

Limiting Chemical Composition, % 

Cobalt.........................................................................Balance;

Carbon........................................................................0.05-0.15 ;

Manganese.....................................................................1.0-2.0 ;

Silicon.........................................................................0.40 max. 

Chromium...................................................................19.0-21.0; 

Nickel...........................................................................9.0-11.0 ;

Tungsten....................................................................14.0-16.0 ;

Phosphorus..............................................................0.040 max. 

Sulfur........................................................................0.030 max. 

Iron...............................................................................3.0 max.