Products
Eaton Alloys PTE LTD. was established in 2011 (as Eaton Alloys Limited) and has grown consistently over this time to become a specialized supplier for specialty metals widely used in oil a
Products
Singapore
Add.: 139 Bedok North Avenue 3, #10-188, Singapore 460139
Tel: 0065 9664 4411
Email：tonytay@eatonalloys.com
Web：www.eatonalloys.com
China
Add.: 489# Guanghua Dong 3rd Road, Chengdu, China, 610091
Tel: 0086 28 81703462
Email: sales@eatonalloys.com
Web: www.eatonalloys.com
718
Alloy 718 (UNS N07718, W Nr 2.4668) is an austenitic nickel-based superalloy. Alloy 718 exhibits excellent high yield tensile and creep-rupture properties at temperatures up to 1300ºF and oxidation resistance to 1800ºF. Alloy 718 is used in applications that require high strength such as parts for jet engines and high speed airframe parts such as wheels, buckets, spacers and high temperature bolts and fasteners.
Chemical Composition
Carbon 0.08 max
Manganese 0.35 max
Silicon 0.35 max
Phosphorus 0.015 max
Sulfur 0.015 max
Chromium 17.0-21.0
Nickel 50.0-55.0
Molybdenum 2.8-3.3
Columbium (Niobium) 4.75-5.50
Titanium 0.65-1.15
Aluminum 0.20-0.80
Cobalt 1.0 max
Tantalum 0.05 max
Boron 0.006 max
Copper 0.30 max
Lead 0.0005
Bismuth 0.00003
Selenium 0.0003
Iron remainder
Mechanical Properties
There are two main types of solution annealed and aging treatments:
1
Solution anneal at 1870 °F to 1925°F for 1 hour min to 2.5 hours max. Cool in air, insert gas, water, polymer or oil to room temperature.
Age harden at 1425 °F to 1475°F for 6 to 8 hours. Cool in air, insert gas, water, polymer or oil to room temperature
2
Anneal at 1725°F to 1850°F for 1.5 hours per inch cross section, or 30 minutes at temperature measured on a heat-sink. Air cool or faster.
Age hardened at 1400°F+/-25°F for 5 hours. Furnace cool at 100°F/hour to 1200°F+/-25°F. Hold at 1200°F for a total aging time of 8hours. Air Cool.
Or
Age hardened at 1325°F+/-25°F for 8hours. Furnace cool at 100°F/hour to 1150°F+/-25°F. Hold at 1150°F for a total aging time of 18 hours. Air cool.
Specifications
UNS N07718
Werkstoff Nr 2.4668
AMS 5596 Sheet, Strip and Plate
AMS 5597 Sheet, Strip and Plate
AMS 5589 Seamless Tube
AMS 5590 Seamless Tube
AMS 5662 Bars, Forgings and Rings
AMS 5663 Bars, Forgings and Rings
AMS 5664 Bars, Forgings and Rings
AMS 5832 Welding Wire
ASTM B637 Forgings
ASTM B670 Plate, Sheet and Strip
AFNOR NC 19 Fe Nb,
MSRR 7115 and MSRR 7116
Inconel 718 (trademark)
FMC Spec M40110, M40118, M40125, M40902, M40908, M40909, M40910
NACE MR-0175/ISO 15156
Chemical Composition
Carbon 0.08 max
Manganese 0.35 max
Silicon 0.35 max
Phosphorus 0.015 max
Sulfur 0.015 max
Chromium 17.0-21.0
Nickel 50.0-55.0
Molybdenum 2.8-3.3
Columbium (Niobium) 4.75-5.50
Titanium 0.65-1.15
Aluminum 0.20-0.80
Cobalt 1.0 max
Tantalum 0.05 max
Boron 0.006 max
Copper 0.30 max
Lead 0.0005
Bismuth 0.00003
Selenium 0.0003
Iron remainder
Mechanical Properties
There are two main types of solution annealed and aging treatments:
1
Solution anneal at 1870 °F to 1925°F for 1 hour min to 2.5 hours max. Cool in air, insert gas, water, polymer or oil to room temperature.
Age harden at 1425 °F to 1475°F for 6 to 8 hours. Cool in air, insert gas, water, polymer or oil to room temperature
| 0.2%Yiel Strength | 120-145ksi |
| Tensile Strength | 150ksi min |
| Elongation in 4D | 20% min |
| Reduction of Area | OD< 254mm, 35% min |
| OD>254mm, 25% min | |
| Hardness | 32-40 HRC |
2
Anneal at 1725°F to 1850°F for 1.5 hours per inch cross section, or 30 minutes at temperature measured on a heat-sink. Air cool or faster.
Age hardened at 1400°F+/-25°F for 5 hours. Furnace cool at 100°F/hour to 1200°F+/-25°F. Hold at 1200°F for a total aging time of 8hours. Air Cool.
Or
Age hardened at 1325°F+/-25°F for 8hours. Furnace cool at 100°F/hour to 1150°F+/-25°F. Hold at 1150°F for a total aging time of 18 hours. Air cool.
| 0.2%Yiel Strength | 150ksi min |
| Tensile Strength | 185ksi min |
| Elongation in 4D | 12% min |
| Reduction of Area | 15% min |
| Hardness | 40 HRC min |
| Charpy V-notch at room temperature or lower | Average energy: 15Ft.Lbs, min |
| Single energy: 10Ft.Lbs, min |
Specifications
UNS N07718
Werkstoff Nr 2.4668
AMS 5596 Sheet, Strip and Plate
AMS 5597 Sheet, Strip and Plate
AMS 5589 Seamless Tube
AMS 5590 Seamless Tube
AMS 5662 Bars, Forgings and Rings
AMS 5663 Bars, Forgings and Rings
AMS 5664 Bars, Forgings and Rings
AMS 5832 Welding Wire
ASTM B637 Forgings
ASTM B670 Plate, Sheet and Strip
AFNOR NC 19 Fe Nb,
MSRR 7115 and MSRR 7116
Inconel 718 (trademark)
FMC Spec M40110, M40118, M40125, M40902, M40908, M40909, M40910
NACE MR-0175/ISO 15156