Inconel 718 alloy steel

Inconel 718 is a nickel-chromium-molybdenum alloy designed to resist a wide range of severely corrosive environments, pitting and crevice corrosion. This nickel steel alloy also displays exceptionally high yield, tensile, and creep-rupture properties at high temperatures. This nickel alloy is used from cryogenic temperatures up to long term service at 1200° F. One of the distinguishing features of Inconel 718’s composition is the addition of niobium to permit age hardening which allows annealing and welding without spontaneous hardening during heating and cooling. The addition of niobium acts with the molybdenum to stiffen the alloy’s matrix and provide high strength without a strengthening heat treatment. Other popular nickel-chromium alloys are age hardened through the addition of aluminum and titanium. This nickel steel alloy is readily fabricated and may be welded in either the annealed or precipitation (age) hardened condition. This superalloy is used in a variety of industries such as aerospace, chemical processing, marine engineering, pollution-control equipment, and nuclear reactors.

Inconel 718 alloy steel similar material are:UNS N07718,W.Nr.2.4668,NiCr19Fe19Nb5Mo3

Inconel 718 alloy steel usually used in the following industries :
Chemical processing
Aerospace
Liquid fuel rocket motor components
Pollution-control equipment
Nuclear reactors
Cryogenic storage tanks
Valves, fasteners, springs, mandrels, tubing hangers
Well head completion equipment and blow out preventers (BOP’s)
Gas turbine engine parts

Inconel 718 alloy steel Chemical Composition, %

50.00-55.00

Remainder

17.00-21.00

.30 max

2.80-3.30

4.75-5.50

0.08 max

0.35 max

0.015 max

0.35 max

0.65-1.15

0.20-.80

1.00 max

0.006 max

Inconel 718 Mechanical Properties(Typical room temperature properties, 1800°F annealed condition)

Ultimate Tensile Strength, psi	.2% Yield Strength psi	Elongation %	Hardness Rockwell B
135,000	70,000	45	100

Inconel 718 alloy steel characteristics:
Good mechanical properties – tensile, fatigue and creep-rupture
Yield tensile strength, creep, and rupture strength properties are exceedingly high
Highly resistant to chloride and sulfide stress corrosion cracking
Resistant to aqueous corrosion and chloride ion stress corrosion cracking

High temperature resistant
Age-hardenable with a unique property of slow aging response that permits heating and cooling during annealing without the danger of cracking.

Excellent welding characteristics, resistant to postweld age cracking

Inconel 718 Product form and Specifications:

Product	ASTM
Sheet/Plate	B670/B 906
Ring/Bar/Rod	B637

China Special Steel Limited is a Inconel 718 Nickel alloy Sheet/Plate/Strip/Coil/tube/Pipe/ Ring/Bar/Rod/Forging/Fittings/Flange professional manufacturer and supplier. If you have any information about Inconel 718 Nickel alloy chemical composition, Mechanical property, density,Heat treatment, melting point ,or any other service, please contact with our sales team.

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