Hastelloy C-4 Nickel Alloy
Hastelloy C-4 (UNS N06455)is a low-carbon nickel-molybdenum-chromium alloy with enhanced thermal stability (650-1040°C) due to its tungsten-free and low-iron/cobalt design. It excels in resisting intergranular corrosion, ideal for harsh applications like flue gas desulfurization and strong acid processing.
Chemical Composition
|
Ni |
C |
Mo |
Fe |
Mn |
Co |
Cr |
S |
P |
Ti |
|
|
Min |
Rem |
- |
14 |
- |
- |
- |
14 |
- |
- |
- |
|
Max |
0.015 |
17 |
3 |
1 |
2 |
18 |
0.03 |
0.04 |
0.7 |
Material Properties
|
Density |
Melting Point |
Minimum Mechanical Properties of the Alloy at Room Temperature |
||
|
Tensile Strength |
Yield Strength |
Elongation |
||
|
g/cm3 |
℃ |
Rm N/mm2 |
Rp0.2 N/mm2 |
A5% |
|
8.94 |
1325-1370 |
650 |
280 |
40 |
Standards
ASTM B574,ASTM B575,ASTM B622
Feature
The alloy exhibits excellent resistance to oxidative-reductive corrosion in chloride-containing environments and maintains good microstructural thermal stability, making it suitable for high-temperature and highly corrosive service conditions.
Applications
This alloy is primarily used in:
1.High-temperature components such as diesel engine combustion chambers, turbine blades, and jet engine parts;
2.Chemical processing equipment for handling nitric acid, organic acid salts, wet chlorine, hypochlorous acid, hydrochloric acid, and chloride-containing systems.
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