Jul 24 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
Machinability
Forming
Welding
Forging
Hot Working
Cold working
Annealing
Hardening
Other Designations
Applications
Introduction
Nicrofer 6030 alloy is a nickel-chromium-iron alloy containing approximately 30 % of chromium that is ideal for using the alloy in oxidizing media. The alloy is characterized by good resistance to caustic cracking, fluoride-contaminated, hot nitric acid, and oxidation and sulfidation in high temperature gaseous environments. It also exhibits good ductility and high mechanical properties at both room and elevated temperatures.
The following datasheet will provide an overview of nicrofer 6030 alloy.
Chemical Composition
The chemical composition of nicrofer 6030 alloy is outlined in the following table.
|
Element |
Content (%) |
|
Chromium, Cr |
27-31 |
|
Iron, Fe |
7-11 |
|
Silicon, Si |
0.5 |
|
Copper, Cu |
0.5 |
|
Manganese, Mn |
0.5 |
|
Carbon, C |
0.05 |
|
Sulfur, S |
0.015 |
|
Nickel, Ni |
Balance |
Physical Properties
The following table shows the physical properties of nicrofer 6030 alloy.
|
Properties |
Metric |
Imperial |
|
Density |
8.2 g/cm3 |
0.296 lb/in3 |
|
Melting point |
1345-1375°C |
2450-2510°F |
Mechanical Properties
The mechanical properties of nicrofer 6030 alloy are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
586 MPa |
85 ksi |
|
Yield strength |
240 MPa |
35 ksi |
|
Elongation at break |
30% |
30% |
Thermal Properties
The thermal properties of nicrofer 6030 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@100°C/212°F) |
14.1 µm/m°C |
7.8 µin/in°F |
|
Thermal conductivity (@20°C/68°F) |
12 W/mK |
83 BTU.in/hrft².°F |
Fabrication and Heat Treatment
Machinability
Conventional machining techniques that are used for machining iron-based alloys can be used.
Forming
Nicrofer 6030 alloy has excellent ductility, and can be readily formed by all conventional techniques.
Welding
The alloy can be welded using commonly used welding techniques such as gas-tungsten arc welding, shielded metal-arc welding, gas metal-arc welding and submerged-arc welding.
Forging
Forging can be readily accomplished in the temperature range of 1038 to 1204°C (1900 to 2200°F).
Hot Working
The alloy can be hot worked in the temperature range of 871 to 1204°C (1600 to 2200°F).
Cold working
Cold working may be performed using standard tooling.
Annealing
The alloy is annealed at 1038°C (1900°F) and then air cooled.
Hardening
Nicrofer 6030 alloy can be hardened by cold working.
Other Designations
Other designations that are equivalent to nicrofer 6030 alloy include the following:
Applications
The following are the list of applications of nicrofer 6030 alloy:
-
Duct work
-
High temperature burners
-
Petrochemical heaters and furnaces.