Jun 21 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications
Introduction
Nickel alloy 80A is a wrought, age-hardenable nickel-chromium alloy strengthened by additions of carbon, aluminum and titanium. It has high tensile and creep-rupture properties at temperatures of up to 815ºC (1500ºF), and good corrosion and oxidation resistances. It is produced by high-frequency melting and casting in air for extruded forms.
The following datasheet will provide an overview of nickel alloy 80A.
Chemical Composition
The chemical composition nickel alloy 80A is outlined in the following table.
|
Element |
Content (%) |
|
Nickel, Ni |
69 |
|
Chromium, Cr |
18 - 21 |
|
Iron, Fe |
≤3 |
|
Cobalt, Co |
≤2 |
|
Titanium, Ti |
1.8-2.7 |
|
Aluminum, Al |
1-1.8 |
|
Manganese, Mn |
≤1 |
|
Silicon, Si |
≤1 |
|
Copper, Cu |
≤0.2 |
|
Zirconium, Zr |
≤0.15 |
|
Carbon, C |
≤0.1 |
|
Sulfur, S |
≤0.015 |
|
Boron, B |
≤0.008 |
Physical Properties
The following table shows the physical properties of nickel alloy 80A.
|
Properties |
Metric |
Imperial |
|
Density |
8.19 g/cm3 |
0.296 lb/in3 |
|
Melting point |
1320-1365°C |
2410-2489°F |
Mechanical Properties
The mechanical properties of nickel alloy 80A are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength (annealed) |
1250 MPa |
18100 psi |
|
Yield strength (annealed) |
780 MPa |
113000 psi |
|
Elongation at break (annealed) |
30% |
30% |
Thermal Properties
The thermal properties of nickel alloy 80A are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@20-100°C/68-212°F) |
12.7 µm/m°C |
7.06 µin/in°F |
|
Thermal conductivity |
11.2 W/mK |
77.7 BTU.in/hrft².°F |
Other Designations
Other designations that are equivalent to nickel alloy 80A include the following:
-
BS 3076 (NA 20)
-
ASTM B 637
-
DIN 17742
-
DIN 17754
-
AFNOR NC 20TA
-
AECMA Pr EN 2188 – 2191
-
AECMA Pr EN 2396
-
AECMA Pr EN 2397
Applications
The following are the list of applications of nickel alloy 80A:
-
Tube supports in nuclear steam generators
-
Die-casting inserts and cores
-
Gas-turbine components such as discs, rings and blades
-
Exhaust valves in internal-combustion engines.