Hastelloy G50 was engineered when a process involves aggressive chemicals, material selection becomes a strategic defense.Standard stainless steel pipes and stainless steel pipe fittings simply cannot withstand the attack. This is especially true with hot sulfuric acid. Hastelloy G50 is a purpose-built solution. Its specific properties are what make it so reliable.
What is Hastelloy G50 | UNS N06950
Hastelloy G50 is a type of nickel-based alloy. It is a member of the Hastelloy family. Its composition is nickel, chromium, molybdenum and iron. This blend provides amazing corrosion resistance. It is particularly effective against strong reducing and oxidizing acids. It’s the material you use when other stainless steel and nickel alloys just don’t have enough endurance.
Key Advantages of Hastelloy G50
Hastelloy G50 is built to resist non-oxidizing acids. It’s a champion against high-temperature sulfuric acid.
The alloy has excellent resistance to pitting and crevice corrosion. These are common forms of attack.
This alloy is stable under heat. Its corrosion resistance stays strong after welding. This means your pipes and fittings stay strong.
Hastelloy G50 is excellent at resisting stress corrosion cracking. This type of failure forms tiny cracks.
Chemical Composition
| Element | Ni | Cr | Mo | Fe | W | C | Mn | Si | Cu |
|---|---|---|---|---|---|---|---|---|---|
| Content (wt%) | Balance | 22.0 – 24.0 | 8.5 – 10.5 | 22.0 – 24.0 | 1.0 Max | 0.05 Max | 1.0 Max | 1.0 Max | 1.5 – 2.5 |
Mechanical Properties
| Property | Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Value (Typical) | ≥690MPa(100ksi) | ≥350MPa(51ksi) | ≥40 | ≤210 | 8.30g/cm³ |
Where You'll Find Hastelloy G50
- Chemical Plants: This alloy is the material of choice for equipment that handles tough chemicals. It’s a perfect fit for processes using hydrochloric and sulfuric acids.
- Pollution Control: It’s used in systems that clean up industrial pollution. It resists the strong acids found in flue gases.
- Farming Chemicals: Handling strong pesticides and fertilizers. It resists a wide range of chemicals.
- High-Temp Parts: It’s a great choice for parts that get hot. It keeps its properties at high temperatures.
- Piping Systems: For critical stainless steel pipe fittings, Hastelloy G50 provides extreme corrosion resistance. It keeps your system working perfectly.
Sourcing and Fabricating Hastelloy G50
Always ask for a Material Test Report (MTR). This proves the material is what it should be.
Work with specialized suppliers of stainless steel pipe and fittings. They understand these alloy steels and can ensure proper fabrication and quality control,and are ISO 9001 and CE-PED certified.
This alloy needs specific welding methods. Make sure your team knows how to handle it.
It’s more expensive upfront. But it lasts much longer. This saves you money in the long run.
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