Haynes 233
Description:
HAYNES 233 alloy is a new Ni-Co-Cr-Mo-Al alloy that offers excellent oxidation resistance at temperatures up to 2100¡ãF (1149¡ãC) or higher coupled with superior creep strength - a combination of properties never before achieved in a readily fabricable alloy. The alloy obtains its exceptional oxidation resistance through the formation of a protective alumina layer, while the high creep strength is a result of solid-solution and carbide strengthening. Additionally, for use in intermediate temperature applications the alloy can be age-hardened by heat treatment to produce even greater strength. Finally, the alloy can be readily fabricated using conventional methods since it exhibits good hot workability, cold formability, and weldability.
Applications:
Hot gas components in aerospace and industrial gas turbines
Industrial heating fixtures and sensors
Various structural components in the emerging technology market.
Chemical Composition:
|
Nickel: |
48 (Balance) |
|
Chromium: |
19 |
|
Cobalt: |
19 |
|
Molybdenum: |
7.5 |
|
Titanium: |
0.5 |
|
Aluminum: |
3.3 |
|
Iron: |
1.5 max. |
|
Manganese: |
0.4 max. |
|
Silicon: |
0.20 max. |
|
Carbon: |
0.1 |
|
Boron: |
0.004 |
|
Tantalum: |
0.5 |
|
Tungsten: |
0.3 max. |
|
Yttrium: |
0.025 max. |
Tensile Properties (Age-Hardened):
HAYNES 233 alloy can be age-hardened to increase strength at temperatures below the gamma-prime solvus. The data below was from HAYNES 233 sheet material age-hardened at 1650¡ãF/4h/AC + 1450¡ãF/8h/AC (899¡ãC/4h/AC + 788¡ãC/8h/AC).
|
Temperature |
0.2% Yield Strength |
Ultimate Tensile Strength |
Elongation |
|||
|
¡ãF |
¡ãC |
ksi |
MPa |
ksi |
MPa |
% |
|
RT |
RT |
112.9 |
778 |
172.2 |
1187 |
27.3 |
|
1000 |
538 |
102.2 |
704 |
147 |
1014 |
25.8 |
|
1200 |
649 |
95.5 |
658 |
156.6 |
1079 |
25.5 |
|
1400 |
760 |
97.4 |
671 |
116.5 |
804 |
27.4 |
|
1500 |
816 |
82 |
565 |
92.3 |
637 |
21.6 |