High Temperature Inconel 718 / UNS N07718 / 2.4668 Nickel Alloy Valve Stem
1. Material: Inconel 718
2. Machined from round bar by NC Machine or CNC.
3. Checked by Go & No go gage
4. NDT Test can be made
5. Surface be polished
6. Moly spray can be made as per customer’s requirements.
7. Small orders and special design is accepted.
Check by Go & No go gage:
Inconel 718 Brief Introduction
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 |
|
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 |
|
Si
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