Udimet 520(Ni-Cr-Co-Mo)

Post Views: 6

1. Introduce

– Precipitation hardenable Ni-based superalloy

– Alloy developed for use in the temperature range of 760~927℃

– Used in the manufacture of second stage blades for high power gas turbines

– Composed of carbide, γ’ phase and refractory elements, it has excellent corrosion resistance and stability at high temperatures

* Udimet : Ni-based alloy recommended for applications requiring high strength at elevated temperatures

2. Property

– Excellent high temperature mechanical properties, corrosion resistance, forgeability, ductility

Element	Impact
Ni	Provides corrosion resistance
Cr	Provides corrosion resistance, oxidation resistance
Co	Highly strengthening element, provides creep properties
Al	Provides high temperature creep properties, oxidation resistance
Ti	Provides high temperature strength, corrosion resistance
Mo	Highly strengthened element, provides high temperature creep properties
W	Highly strengthened element, provides high temperature creep properties

[Udimet 520 Chemical Composition (%)]

Ni	Cr	C	Al	Ti
52.18 ~ 59.98	18.00 ~ 20.00	0.02 ~ 0.06	1.80 ~ 2.30	2.90 ~ 3.25

Mo	Co	W	B
5.50 ~ 7.00	11.00 ~ 14.00	0.80 ~ 1.20	Max. 0.01

[Udimet 520 Mechanical Properties]

Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)
Min. 1310	Min. 860	Min. 21

[Udimet 520 Physical Properties]

Density (g/㎤)	Melting Range (℃)
8.21	1260 ~ 1405

3. Standard & Specification

PDS	15125A1
ASTM	B637

4. Available Form

– Plate, Sheet

– Bar, Rod : Round, Flat, Square

– Coil, Strip

– Pipe, Tube : Seamless, Welded

5. Application & Product

– Aerospace, Chemical

Application	Product
Aerospace	Aircraft blades, Land-based gas turbine blades, Turbine wheels, Combustion chamber liners
Chemical	Pressure vessels, Heat exchangers

(1) Land-based gas turbine blades / (2) Combustion chamber liners / (3) Pressure vessels / (4) Heat exchangers

Ti Gr.23(Ti-Al-V)