Inconel 690 polished bar
Inconel 690 polished bar is a high-performance nickel-based alloy bar. It is made by precision machining and surface polishing. It has a smooth and uniform surface finish. Inconel 690 polished bar is made of nickel (≥58%), chromium (28-31%), a little iron (7-11%) and some other elements. It is made by melting, hot working, cold drawing and polishing. It has high dimensional accuracy and excellent corrosion resistance.
Inconel 690 polished bar is widely used in nuclear power steam generators, chemical reactors, oil refining equipment and flue gas desulfurization systems. It can resist high-temperature and high-pressure corrosion. It is also used in high-end parts of semiconductors and medical devices. It has both strength and surface cleanliness. It can greatly increase the life of equipment. It is suitable for harsh environments.
Features of Inconel 690 polished bar
Excellent corrosion resistance
Inconel 690 polished bar has a high chromium content. It has strong resistance to oxidation and acid corrosion. It performs much better than 304/316 stainless steel in resisting stress corrosion cracking (SCC) in high-temperature, high-pressure water environments like nuclear power plants.
Inconel 690 polished bar is resistant to nitric acid, organic acids, alkaline media, and chloride environments.
High-temperature stability
Inconel 690 polished bar can keep its high strength, creep resistance, and microstructure stability at temperatures above 540°C. It is suitable for high-temperature parts like heat exchangers and combustion chambers.
Excellent mechanical properties
After cold working and heat treatment, Inconel 690 polished bar can reach a tensile strength of 550-750 MPa. It also has good ductility and fatigue life. The polished surface reduces stress concentration and improves fatigue resistance.
Surface treatment advantages
The polishing process of Inconel 690 polished bar reduces surface roughness. It reduces microcracks and defects. This improves corrosion resistance. The smooth surface is also easy to clean. It is suitable for hygienic or high-purity environments such as chemical pipelines and semiconductor equipment.
Applications of Inconel 690 polished bar
Inconel 690 polished bar is used in pressurized water reactor (PWR) steam generator heat transfer tubes and nuclear waste treatment equipment. This is because it can resist high-temperature, high-pressure water corrosion and radiation.
Chemical and petroleum
Inconel 690 polished bar is used to make pickling equipment, reactors, heat exchangers, and piping systems. It performs well in harsh environments with sulfur and chloride ions.
Environmental protection and energy
Inconel 690 polished bar is used in flue gas desulfurization (FGD) system components and waste incinerator linings. It can resist acidic gases and high-temperature oxidation.
High-end manufacturing
Inconel 690 polished bar is used in the chambers and supports of semiconductor processing equipment. It is also used as a raw material for medical implants (which need further biocompatibility treatment).
|
Parameter |
Typical Specifications |
Remarks |
|
Diameter Range |
3mm ~ 150mm |
Custom sizes available |
|
Length |
1000mm ~ 6000mm |
Cut-to-length upon request |
|
Surface Finish |
Mirror polish (Ra ≤ 0.4μm) |
Other finishes (e.g., Ra ≤ 0.8μm) available |
|
Tolerance |
h9 / h11 |
Precision cold-drawn, negotiable |
|
Condition |
Solution annealed |
Optimal corrosion resistance & mechanical properties |
|
Tensile Strength |
550 ~ 750 MPa |
Depends on processing |
|
Yield Strength |
≥ 240 MPa |
Typical (annealed condition) |
|
Elongation |
≥ 30% |
ASTM B166 standard |
|
Density |
8.19 g/cm³ |
Nickel alloy standard |
|
Main Composition |
Ni≥58%, Cr=28-31%, Fe=7-11% |
Trace elements (C, Mn, Si, etc.) |
|
Applicable Standards |
ASTM B166, AMS 5716, EN 10095 |
Material certifications (MTC) available |
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 Inconel 690 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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