| Standard: | SAE AMS 5589， SAE AMS 5590， ASME Code Case N-253， DIN 17751. | Grade: | Inconel 718， Alloy 718， Nickel 718， Nicrofer 5219， Alvac 718， Haynes 718， Altemp 718. |
|---|---|---|---|
| Size: | OD:3MM TO 530MM ，WT:0.2MM TO 60MM， L:MAX 50M | PACKING: | Ply-wooden Case Or Iron Case |
| High Light: | nickel alloy tube， inconel tube | ||
Anti – Corrosion Inconel Tubing Alloy 718 SAE AMS 5589 / 5590 DIN 17751
Inconel 718 is a high strength nickel base superalloy used for cryogenic temperatures up to long term service at 1200°F. The alloy is readily fabricated and may be welded in either the annealed or precipitation (age) hardened condition. Anneal 1700 -1850°F， air cool or faster. Age 1325°F 8 hours， furnace cool to hold at 1150°F， for a total aging time of 18 hours， air cool. Alloy 718 will show a contraction of 0.0008 inch/inch after precipitation hardening.
Chemistry
| Ni+Co | Cr | Cb+Ta | Mo | Ti | Al | Co | C | Mn | Si | P | S | B | Cu | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 50.00 | 17.00 | 4.75 | 2.80 | 0.65 | 0.20 | — | — | — | — | — | — | — | — | — |
| MAX | 55.00 | 21.00 | 5.50 | 3.30 | 1.15 | 0.80 | 1.00 | 0.08 | 0.35 | 0.35 | 0.015 | 0.015 | 0.006 | 0.30 | Balance |
Specifications
AMS 5596， AMS 5662， AMS 5663， AMS 5832
ASME Case 2222-1， ASME SFA 5.14
ASTM B 637， ASTM B 670
EN 2.4668
GE B50TF14， GE B50TF15
UNS N07718
Werkstoff 2.4668
Inventory
INCONEL 718 PIPE ， INCONEL 718 TUBE ， INCONEL 718 FITTING， INCONEL 718 FLANGE ， INCONEL 718 Coil，INCONEL 718 Plate，INCONEL 718 Round Bar， INCONEL 718 Sheet， INCONEL 718 Weld Wire
Rod， Bar， Wire and Forging Stock: ASTM B 637， ASME SB 637， AMS 5662， AMS 5663， AMS 5664， AMS 5832， AMS 5914， AMS 5962， ASME Code Case 1993， ASME Code Case 2206， ASME Code Case 2222， AECMA PrEN 2404， AECMA PrEN 2405， AECMA PrEN 2952， AECMA PrEN 2961， AECMA PrEN 3219， AECMA PrEN 3666， ISO 9723， ISO 9724， ISO 9725， DIN 17752-17754.
Plate， Sheet and Strip: ASTM B 670， ASTM B 906， ASME SB 670， ASME SB 906， SAE AMS 5596， SAE AMS 5597， SAE AMS 5950， AECMA PrEN 2407， AECMA PrEN 2408， ISO 6208， DIN 17750.
Pipe and Tube: SAE AMS 5589， SAE AMS 5590， ASME Code Case N-253， DIN 17751.
Welding Product: – INCONEL Filler Metal 718 – AWS 5.14 / ERNiFeCr-2.
Others: ASME Code Case N-62， ASME Code Case N- 208， DIN 17744.
Common Trade Names
Alloy 718， Inconel® 718， Nickel 718
Features
- Good mechanical properties: tensile， fatigue and creep-rupture
- Excellent welding characteristics， resistant to postweld age cracking
- Oxidation resistant throughout its useful temperature range
Physical Properties
Density: 0.296 lb/in3 annealed， 0.274 lb/in3 aged
Melting Point: 2410 – 2540°F
| Temperature， °F | -320 | 70 | 200 | 400 | 600 | 1000 | 1200 | 1400 |
| Coefficient* of Thermal Expansion， in/in°F x 10-6 | 5.9 | – | 7.3 | 7.5 | 7.7 | 8.1 | 8.4 | 8.9 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F | – | 6.4 | 7.2 | 8.2 | 9.3 | 11.3 | 12.3 | 13.3 |
| Modulus of Elasticity， Dynamic psi x 106 | – | 29 | 28 | 27 | 26 | 25 | 24 | 22 |
* 70°F to indicated temperature.
Mechanical Properties
Typical Room Temperature Properties， 1800°F Annealed Condition
| Ultimate tensile strength， ksi | 135 |
| 0.2% yield strength， ksi | 70 |
| Elongation， % | 45 |
| Hardness， Rockwell B | 100 |
Average Tensile Properties， ½" Bar Annealed 1800°F， Aged 1325/1150°F
| Temperature， °F | 70 | 400 | 800 | 1000 | 1200 | 1400 |
| Ultimate Tensile Strength， ksi | 210 | 198 | 191 | 185 | 168 | 111 |
| 0.2% Yield Strength， ksi | 175 | 163 | 156 | 155 | 149 | 110 |
| Elongation， % | 22 | 20 | 19 | 18 | 19 | 27 |
| Hardness， Rockwell C | 42 – 44 | – | – | 40 – 41 | 40 – 41 | 33 – 34 |
Typical Stress Rupture， Bar， Annealed 1800°F， Aged 1325/1150°F
| Temperature， °F | 1100 | 1200 | 1300 | 1400 |
| 100 Hours， ksi | 170 | 110 | 75 | 44 |
| 1，000 Hours， ksi | 130 | 85 | 55 | 25 |
Applications
- 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
