Nickel Superalloys
IN625, IN690, IN718, Haynes 230
Superalloys have good creep and oxidation resistance. They are also known as high performance alloys, and can be formed in different shapes. Work hardening, precipitation hardening, and solid-solution hardening are performed for strengthening the super alloys. These alloys have the capacity to function at very high temperatures and severe mechanical stress, and also where high surface stability is required.
IN625
Inconel 625 is a nickel-chromium-molybdenum alloy with an addition of niobium that acts with the molybdenum to stiffen the alloy’s matrix and thereby provide high strength without a strengthening heat treatment. The alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion. Used in chemical processing, aerospace and marine engineering, pollution-control equipment, and nuclear reactors.
It’s composition corresponds to AMS 5599, AMS 5666, ASTM B446, UNS N06625.
Nominal Composition in Percentage:
Ni 58.00
Co 1.00
Cr 21.50
Mo 9.00
Fe 5.00
Si 0.50
Mn 0.50
C 0.100
Al 0.400
Ti 0.400
P 0.015
S 0.015
Nb+Ta 3.65
IN690
Inconel 690 is a nickel-chromium alloy. The substantial chromium content gives the alloy outstanding resistance to oxidizing chemicals and to high-temperature oxidizing gases. The high level of nickel imparts resistance to stress corrosion cracking in chloride-containing environments as well as to sodium hydroxide solutions.
It’s composition corresponds to AMS 5599, AMS 5666, ASTM B446, UNS N06690.
Nominal Composition in Percentage:
Ni >58.0
Cr 29.0
Fe 9.00
C <0.05
Si <0.05
Mn <0.50
S <0.015
Cu <0.5
IN718
Nickel Alloy IN718 is a nickel based heat resistant alloy in fine powder form. This kind of precipitation-hardening nickel-chromium alloy is characterised by having good tensile, fatigue, creep and rupture strength at temperatures up to 700oC. It has higher strength t
IN718 also has outstanding corrosion resistance in various corrosive environments. This material is ideal for many high temperature applications such as gas turbine parts, instrumentation parts, power and process industry parts etc.
It’s composition corresponds to UNS N07718, AMS 5662, AMS 5664, UNS N07718.
han Inconel X-750 and better mechanical properties at lower temperatures than Nimonic 90 and Inconel X-750.
Nominal Composition in Percentage:
Ni 52.50
Co 1.00
Cr 19.00
Mo 3.05
Fe 17.00
Si <0.35
Mn <0.35
C <0.080
Al 0.600
Ti 0.900
Cu <0.30
P <0.015
B <0.006
S <0.015
Nb+Ta 5.125
Pb <0.0005
Bi <0.00003
Se <0.0003
Haynes 230
Best balance of strength, thermal stability, oxidation resistance, thermal cycling resistance and fabricability of any major high-temperature alloy. It is particularly effective for very long-term applications at temperatures of 1200°F (649°C) or more, and is capable of outlasting stainless steels and nickel alloys by as much as 100 to 1 depending upon the temperature. Applications include several components in aerospace gas turbines.
It’s composition corresponds to AMS 5878, UNS N06230.
Nominal Composition in Percentage:
Ni 56.0
W 14.0
Co <5.0
Cr 22.0
Fe <3.0
Mo 2.0
Si 0.50
Mn 0.65
C 0.10
Al 0.35
La 0.005-0.05
P <0.03
S <0.015
B <0.015
Ti <0.10
Cu <0.50
