Jul 18 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
Machinability
Forming
Welding
Heat Treatment
Hot Working
Cold Working
Annealing
Other Designations
Applications
Introduction
Nicrofer 5716 alloy is a nickel-chromium-molybdenum alloy containing tungsten and low amounts of carbon and silicon. The alloy is characterized by excellent resistance to stress corrosion cracking, crevice corrosion and pitting.
The following datasheet will explain in detail about nicrofer 5716 alloy.
Chemical Composition
The chemical composition of nicrofer 5716 alloy is outlined in the following table.
|
Element |
Content (%) |
|
Molybdenum, Mo |
15 - 17 |
|
Chromium, Cr |
14.5 - 16.5 |
|
Iron, Fe |
4-7 |
|
Tungsten, W |
3 - 4.5 |
|
Cobalt, Co |
2.5 |
|
Manganese, Mn |
1 |
|
Vanadium, V |
0.35 |
|
Silicon, Si |
0.08 |
|
Phosphorus, P |
0.03 |
|
Sulfur, S |
0.03 |
|
Carbon, C |
0.02 |
|
Nickel, Ni |
Balance |
Physical Properties
The following table shows the physical properties of nicrofer 5716 alloy.
|
Properties |
Metric |
Imperial |
|
Density |
8.9 g/cm3 |
0.322 lb/in3 |
|
Melting point |
1325-1370°C |
2410-2500°F |
Mechanical Properties
The mechanical properties of nicrofer 5716 alloy are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
48 MPa |
730 ksi |
|
Yield strength |
45 MPa |
330 ksi |
|
Elongation at break |
106% |
106% |
|
Brinell hardness |
30 |
30 |
Thermal Properties
The thermal properties of nicrofer 5716 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@100°C/212°F) |
11.7 µm/m°C |
7.3 µin/in°F |
|
Thermal conductivity (@20°C/68°F) |
10.6 W/mK |
73 BTU.in/hrft².°F |
Fabrication and Heat Treatment
Machinability
Nicrofer 5716 alloy has good machinability.
Forming
The alloy can be formed by all conventional means.
Welding
The alloy can be welded using all conventional welding techniques, except that excess heat should be avoided.
Heat Treatment
Nicrofer 5716 alloy is heat-treated at 1121°C (2050°F) followed by rapid quenching.
Hot Working
The alloy can be hot formed or extruded followed by solution heat treating.
Cold Working
Cold working of nicrofer 5716 alloy can be performed through conventional means.
Annealing
The alloy can be annealed in the solution treated condition at 1121°C (2050°F).
Other Designations
Other designations that are equivalent to nicrofer 5716 alloy include the following:
-
ASTM B366
-
ASTM B574
-
ASTM B575
-
ASTM B619
-
ASTM B622
-
ASTM B626
-
ASTM F467
-
ASTM F468
-
DIN 2.4819
Applications
The following are the list of applications of nicrofer 5716 alloy:
-
Chemical process equipment
-
Catalytic systems