Jul 3 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications
Introduction
INCOLOY alloy 945X is a high-strength, corrosion-resistant alloy that has improved resistance to chloride induced stress corrosion cracking due to its high nickel content. The molybdenum content in its composition aids resistance to pitting and crevice corrosion. In addition, nickel with copper and molybdenum outstanding resistance to general corrosion in reducing media.
The following datasheet will provide an overview of INCOLOY alloy 945X.
Chemical Composition
The chemical composition INCOLOY alloy 945X is outlined in the following table.
|
Element |
Content (%) |
|
Nickel, Ni |
45-55 |
|
Chromium, Cr |
19.5-23 |
|
Molybdenum, Mo |
3-4 |
|
Niobium, Nb |
2.5-4.5 |
|
Copper, Cu |
1.5-3 |
|
Manganese, Mn |
1 |
|
Silicon, Si |
0.5 |
|
Titanium, Ti |
0.5-2.5 |
|
Sulfur, S |
0.03 |
|
Phosphorus, P |
0.03 |
|
Aluminum, Al |
0.01-0.7 |
|
Carbon, C |
0.005-0.04 |
|
Iron, Fe |
Balance |
Physical Properties
The following table shows the physical properties of INCOLOY alloy 945X.
|
Properties |
Metric |
Imperial |
|
Density |
8.2 g/cm3 |
0.296 lb/in3 |
|
Melting point |
1270-1377°C |
2317-2510°F |
Mechanical Properties
The mechanical properties of INCOLOY alloy 945X are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
1194 MPa |
173.2 ksi |
|
Yield strength |
920 MPa |
133.4 psi |
|
Elongation at break |
27.80% |
27.80% |
Thermal Properties
The thermal properties of INCOLOY alloy 945X are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@93°C/200°F) |
14.19 µm/m°C |
7.88 µin/in°F |
|
Thermal conductivity (23°C/73°F) |
10.9 W/mK |
75.9 BTU.in/hrft².°F |
Applications
The following are the list of applications of INCOLOY alloy 945X:
-
Marine and pump shafting
-
Fasteners
-
Tubular products and valves
-
Landing nipples, tool joints and packers
-
High-strength piping systems.