Hastelloy C-4 polished bar
Hastelloy C-4 polished bar is a nickel-chromium-molybdenum alloy. It reduces carbon and silicon content and optimizes the alloy composition. For example, it adds titanium as a stabilizer. This greatly improves its resistance to sensitization and thermal stability. The bar is made by cold drawing or hot extrusion. Its surface is finely polished. It has a smooth metallic luster and high dimensional accuracy. It can be used directly for precision machining or assembly.
Hastelloy C-4 polished bar is widely used in many fields. These include chemical industry (reactors, pumps, and valves), environmental protection (flue gas desulfurization), energy (nuclear processing), pharmaceutical (high-purity piping), and aerospace (high-temperature parts). Its excellent corrosion resistance, anti-sensitization performance, and high mechanical strength make it a key material for extreme working conditions. It ensures the long-term stable operation of equipment.
Features of Hastelloy C-4 polished bar
Excellent Corrosion Resistance
Hastelloy C-4 polished bar performs well in both oxidizing and reducing media. It can withstand hydrochloric acid, sulfuric acid, phosphoric acid, and chloride stress corrosion. It is especially suitable for high-temperature environments with halide ions.
Anti-sensitization and Thermal Stability
The low carbon design (≤0.015%) and the addition of titanium in Hastelloy C-4 polished bar prevent intergranular precipitation during welding or at high temperatures (650–1150°C). This reduces the risk of intergranular corrosion.
Excellent Mechanical Properties
Hastelloy C-4 polished bar has high strength and good ductility (typical tensile strength ≥690 MPa). It is suitable for manufacturing high-stress components.
Surface Polishing Advantages
The polished surface of Hastelloy C-4 polished bar reduces surface roughness. This decreases the adhesion of media and local corrosion, extending its service life.
Applications of Hastelloy C-4 polished bar
Chemical Industry: Hastelloy C-4 polished bar is used to make reactors, heat exchangers, and pump and valve components. It is used in strong acid environments (such as sulfuric acid regeneration plants) and chlorine-containing media (such as PVC production).
Environmental and Energy: Hastelloy C-4 polished bar is used to make components for flue gas desulfurization (FGD) systems and nuclear fuel reprocessing equipment.
Pharmaceutical and Food: Hastelloy C-4 polished bar is used for high-purity media transportation pipes. It meets hygiene standards and resists cleaner corrosion.
Aerospace: Hastelloy C-4 polished bar is used to make high-temperature gas components, such as turbine sealing rings.
|
Parameter |
Typical Value / Range |
Remarks |
|
Material Standard |
ASTM B574 / UNS N06455 |
Complies with U.S. standards |
|
Diameter Range |
5mm – 150mm |
Custom sizes available |
|
Length |
1000mm – 6000mm |
Standard lengths, custom cuts possible |
|
Surface Finish |
Polished (Ra ≤ 0.8μm) |
Smooth, reduces corrosion risk |
|
Density |
8.64 g/cm³ |
Typical for nickel alloys |
|
Tensile Strength |
≥690 MPa |
At room temperature |
|
Yield Strength |
≥310 MPa |
At room temperature |
|
Elongation |
≥40% |
Excellent ductility |
|
Hardness |
150–220 HB |
Brinell hardness |
|
Temperature Range |
-200°C to +1150°C |
High oxidation resistance, good low-temp toughness |
|
Main Composition |
Ni (base), Cr (16%), Mo (16%), Ti (0.7%) |
Low carbon (≤0.015%) for reduced sensitization |
FAQ
Are you a factory or manufacturer?
A: Yes, we are a factory but we generally use our trading company to handle the business abroad. It will be more convenient to receive the remittance and arrange the shipment.
What is the delivery method?
A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.
Why is your product so cost-effective?
A: We cut out the middlemen in the end-to-end manufacturing process and we obtain raw material directly from its source.
Do you do spot quality inspection or full inspection?
A: 100% full inspection for sure. All unqualified products are discarded.
How do you ensure your lead time?
A: From material preparation to machining and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.
What is the MOQ of Hastelloy C-4 polished bar ?
A: Depends on quantity, generally, no MOQ limit.
How to pay for it?
A: A bank transfer (T/T) will be acceptable.
What is the delivery time?
A: around 7-20 days which depends on the quantity and production.
What is kind of the package?
A: Generally, we use a carton case or plywood case with protective material inside to ensure the save of cargo
What is the lead time?
A: from order placed to cargo receiving will take around 10-25 days.
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