Introduction Nicrofer 6023 alloy is a nickel-chromium-iron alloy with excellent
resistance to corrosion and oxidation at elevated temperatures. The
alloy is precipitation-hardenable, and exhibits good mechanical
properties at high temperatures. The following datasheet will provide an overview of nicrofer 6023
alloy. Chemical Composition The chemical composition of nicrofer 6023 alloy is outlined in the
following table. Element | Content (%) |
|---|
Nickel, Ni | 58-63 | Chromium, Cr | 21-25 | Aluminum, Al | 1-1.7 | Copper, Cu | 1 | Manganese, Mn | 1 | Silicon, Si | 0.5 | Carbon, C | 0.1 | Sulfur, S | 0.015 | Iron, Fe | Balance |
Physical Properties The following table shows the physical properties of nicrofer 6023
alloy. Properties | Metric | Imperial |
|---|
Density | 8.11 g/cm3 | 0.293 lb/in3 | Melting point | 1360-1411°C | 2480-2572°F |
Mechanical Properties The mechanical properties of nicrofer 6023 alloy are displayed in
the following table. Properties | Metric | Imperial |
|---|
Tensile strength (Solution annealed) | 760 MPa | 110000 psi | Yield strength (Solution annealed) | 450 MPa | 65300 psi | Elongation at break (Solution annealed) | 42% | 42% |
Thermal Properties The thermal properties of nicrofer 6023 alloy are given in the
following table. Properties | Metric | Imperial |
|---|
Thermal expansion co-efficient (@20-100°C/68-212°F) | 13.75 µm/m°C | 7.639 µin/in°F | Thermal conductivity | 11.2 W/mK | 77.7 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 6023 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 The alloy can be forged in the temperature range of 1038 to 1232°C
(1900 to 2250°F). Hot Working Hot working of nicrofer 6023 alloy can be performed in the
temperature range of 871 to 1232°C (1600 to 2250°F). Cold working Cold working may be performed using standard tooling. Annealing The alloy can be annealed at 1149°C (2100°F) and then rapidly
cooled to avoid thermal cracking. Other Designations Other designations that are equivalent to nicrofer 6023 alloy
include the following: AMS 5715 AMS 5870 ASTM B166 ASTM B167 ASTM B168 DIN 2.4851
Applications The following are the list of applications of nicrofer 6023 alloy: Annealing tubes Muffles Flame shields Combustor components Process heaters Condenser tubes
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