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Introduction
INCONEL 690 (UNS N06690/W. Nr. 2.4642) is a high-chromium nickel alloy material, It having excellent resistance to many corrosive media and oxidation and sulfidation in high-temperature gaseous environments high temperature condition, In addition to its corrosion resistance, alloy 690 has high strength, good metallurgical stability, and favorable fabrication characteristics,The alloy is normally used in the annealed condition,The alloy’s behavior during cold forming is similar to that of INCONEL alloy 600.
Chemical components
Composition（%） | C | Si | Mn | Fe | S | Cr | Ni | Cu |
Min | \ | \ | \ | 7.0 | \ | 27.0 | 58 | \ |
Max | 0.05 | 0.5 | 0.5 | 11.0 | 0.015 | 31.0 | \ | 0.5 |
Mechanical properties
Rigidity | Tensile strength | Yield strength | Elongation |
85HRB | ≥700MPa | ≥350MPa | ≥45% |
Physical properties
Density | Melting points | Specific heat | Magnetism | Resistivity | Thermal conductivity | Linear expansivity |
7.19g/cm3 | 1344-1377℃ | 455J/(Kg.℃） | \ | 12.1λ/(W(m•℃) | 9.2W/(m.k)(20℃) | 14.0×10-6/K(20-100℃) |
Available Standard
ASTM B163 N06690 Heat exchanger&Condenser: This specification covers seamless tubes of nickel and nickel alloys for use in condenser and heat exchanger service.
ASTM B166 N06690 Round bar&Wire: This specification covers nickel-chromium-iron alloys(UNS NO6600) in the form of hot-finished and cold-worked rounds, squares,hexagons, rectangles,and cold worked wire.
ASTM B167 N06690Seamless pipes&Tube :This specification covers nickel-chromium-iron alloys (UNS N06600)in cold-worked annealed, hot-worked annealed, and hot finished seamless pipe and tube intended for general corrosion resistant and heat resistant applications.
ASTM B168 N06690 Plate&sheet&Strip :This specification covers rolled nickel-chromium-iron alloy(UNS NO6600) plate, sheet, and strip.
Applications
(1) Aerospace: used to manufacture engine parts, turbine blades, etc.
(2) Chemical industry: used to manufacture chemical equipment, reactors, heating furnaces, etc.
(3) Energy: used in nuclear reactors, heat exchangers, etc. in nuclear power plants.
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