Alloy 718 nickel tubing is an age-hardenable nickel-chromium-iron alloy also containing significant amounts of niobium, molybdenum, titanium and aluminum. It combines good corrosion resistance with extremely high strength. Typical applications include heat exchangers and O-rings.
Typical applications: pollution control, chemical processing, pulp and paper production, and waste treatment.
Welded product |
Seamless product |
|
OD:1" OD through 7" OD
|
OD:.250" through 2"
|
| Walls:.035" through .080" | Walls:.028 through .095" |
| Specifications: AMS 5596 | Specifications: AMS 5589 |
| Typical Chemical Composition % (max values, unless noted) | |||||||
|---|---|---|---|---|---|---|---|
| Nickel | 50.0-55.0 | ||||||
| Chromium | 17.0-21.0 | ||||||
| Iron nominal | 18.5 | ||||||
| Molybdenum | 7.0-9.5 | ||||||
| Niobium | 2.75-4.0 | ||||||
| Aluminum | 0.035 | ||||||
| Titanium | 1.0-1.7 | ||||||
| Sulfur | 0.01 | ||||||
| Carbon | 0.03 | ||||||
| Manganese | 0.035 | ||||||
| Silicone | 0.35 | ||||||
| Phosphorus | 0.015 | ||||||
| Boron | 0.006 | ||||||
| Typical Mechanical Properties | |||||
|---|---|---|---|---|---|
| 1000 psi | Mpa | ||||
| Yield Strength (0.2% offset) | 159.0 | 1096 | |||
| Tensile Strength | 191.5 | 1320 | |||
| Elongation % | 20 | ||||
| Rockwell Hardness | 40C | ||||