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Model No: Inconel 718
Inconel 718
Delivery :
FOB
minimum order :
100 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
Inconel 718 Description
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 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 Standards
- UNS N07718
- ASTM B637, ASTM B670
- AMS 5596, AMS 5662, AMS 5663, AMS 5832
- ASME Case 2222-1, SFA 5.14
- NACE MR0175
- EN 2.4668, Werkstoff 2.4668
- GE B50TF14, B50TF15
- Other common names: Alloy 718, Haynes® 718, Nicrofer® 5219, Allvac® 718, Altemp® 718
Inconel 718 Chemical Composition
| Element | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Molybdenum | Columbium | Titanium | Aluminum | Cobalt | Boron | Copper | Tantalum | Iron |
| Percentage | 0.08 max | 0.35 max | 0.015 max | 0.015 max | 0.35 max | 17-21 | 50-55 | 2.80-3.30 | 4.75-5.50 | 0.65-1.15 | 0.20-0.80 | 1.00 max | 0.006 max | 0.30 max | 0.05 max | Balance |
Inconel 718 Mechanical Properties
The room temperature strength of the Inconel 718 alloy is substantially increased by precipitation heat treatment as the following data indicate. These values are properties specified for sheet, strip and plate in AMS 5596 and AMS 5597.
| Yield Strength Min (0.2% offset) | Ultimate Tensile Strength Min | Elongation (% in 2") | |
| Sheet and strip | 80,000 psi (550 MPa) | 140,000 psi (965 MPa) | 30 (min) |
| Plate | 105,000 psi (725 MPa) | 150,000 psi (1,035 MPa) | 30 (min) |
Solution trated plus precipitation heat treated.
| Yield Strength Min (0.2% offset) | Ultimate Tensile Strength Min | Elongation (% in 2") |
| 150,000 (1,035 MPa) | 180,000 psi (1,240 MPa) | 12 (min) |
Inconel 718 application
- 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
Lork Group is an supplier of industrial metals to the global aerospace, oil and gas, power generation, petrochemical, bio-medical, pharmaceutical, and other high tech manufacturing industries. Products of premium metal products including Inconel alloys,Incoloy alloys,Monel alloys,Haynes alloys,Hastelloy alloy,stainless steelandother superalloy. We certify to most ASME, ASTM, AMS, and military specifications as well as most international standards certification.
