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Alloy Portfolio

Heat Resistant Alloys

Nickel and Nickel Alloys

Designations Equivalent Specifications Major Elements Chemical Compositions(%) Properties Applications
ASTM JIS Ni Cr Mo Cu Fe Other Elements
I-600(Inconel) B166&564
UNS N06600
NCF600 76.0 15.5 - - 8.0 - A nickel-chromium alloy with good oxidation resistance at high temperatures and resistance to chloride-ion stress-corrosion cracking, corrosion by high-purity water, and caustic corrosion. Used for furnace components, in chemical and food processing, in nuclear engineering, and for sparking electrodes
I-601(Inconel) B166
UNS N06601
NCF601 60.5 23.0 - - 14.4 Al 1.4 A nickel-chromium alloy with an addition of aluminum for outstanding resistance to oxidation and other forms of high-temperature corrosion. It also has high mechanical properties at elevated temperatures. Used for industrial furnaces; heat-treating equipment such as baskets, muffles, and retorts; petrochemical and other process equipment; and gas-turbine
I-625(Inconel) B446&564
UNS N06625
NCF625 61.0 21.5 9.0. - 2.5 Nb+Ta 3.7 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.
I-718(Inconel) B637
UNS N07718
NCF718 54.0 19.0 3.0 - 18.5 Nb+Ta 5.1
Ti 0.9
Al 0.5
A precipitation-hardenable nickel-chromium alloy also containing significant amounts of iron, niobium, and molybdenum along with lesser amounts of aluminum and titanium. It combines corrosion resistance and high strength with outstanding weldability including resistance to post-weld cracking. The alloy has excellent creep-rupture strength at temperatures to 1300°F (700°C). Used in gas turbines, rocket motors, spacecraft, nuclear reactors, pumps, and tooling.
IX -750(Inconel) B637
UNS N07750
NCF750 73.0 15.5 - - 7.0 Nb+Ta 1.0
Ti 2.5
Al 0.9
A nickel-chromium alloy similar to INCONEL alloy 600 but made precipitation hardenable by additions of aluminum and titanium. It has good resistance to corrosion and oxidation along with high tensile, creep-rupture properties at temperatures to 1300°F (700°C). . Used in gas turbines, rocket engines, nuclear reactors, pressure vessels, tooling, and aircraft structures. It is used for high-temperature springs and bolts with excellent relaxation resistance.
I-800H
I-800HT(Incoloy)
B408&564
UNS N08811
NCF800H 32.5 21.0 - - 46.0 C 0.08
Al+Ti 1.0
Nickel-iron-chromium alloys having the same basic composition as INCOLOY alloy 800 but with significantly higher creep-rupture strength. The higher strength results from close control of the carbon, aluminum, and titanium contents in conjunction with a high-temperature anneal. Used in chemical and petrochemical processing, for super-heater and re-heater tubing in power plants, in industrial furnaces, and for heat-treating equipment.
N-80A(Nimonic) B637
UNS N07080
NCF80A 76.0 19.5 - - 2.0 Ti 2.4
Al 1.4
A nickel-chromium alloy similar to NIMONIC alloy 75 but made precipitation hardenable by additions of aluminum and titanium. The alloy has good corrosion and oxidation resistance and high tensile and creep-rupture properties at temperatures to 1500°F (815°C). Used for gas-turbine components (blades, rings, and discs), bolts and tube supports in nuclear steam generators, die-casting inserts and cores, and exhaust valves in internal-combustion engines.

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Iron Base Alloys

Designations Equivalent Specifications Major Elements Chemical Compositions(%) Properties Applications
ASTM JIS Ni Cr Mo Cu Fe Other Elements
SUH660(Super Alloy) A453&638 Gr660 SUH660 25.0 14.0 1.2 - bal Ti 2.0
Mn 1.5
A precipitation-hardenable alloy having corrosion resistance and high strength. Used for blades, shafts, and after-burner springs and fasteners, in aircraft engines and industrial gas turbines.
NAR-AH-4 - - 11.0 23.0 - - bal N 0.2
La + Ce 0.04
B添加
An alloy having hot tensile and creep rapture properties higher than UNS 31000, It has oxidation resistance, not inferior to, at temperatures of 900 to 1000℃. It is more advantageous than UNS 31000 in aspects of structural stability, weldability and economy. Used for components in industrial and heat-treating furnaces, high temperature devices in power generation and chemical processing, and automotive exhaust gas system.

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