Hastelloy B3 polished bar
Hastelloy B3 polished bar is a nickel-molybdenum (Ni-Mo) alloy bar. It is made by precision cold rolling or hot working. The surface is polished. It has a high finish (usually Ra≤0.8μm). The main elements of Hastelloy B3 polished bar are nickel (Ni≥65%) and molybdenum (Mo≈28-30%). It also has a little chromium (Cr≈1-3%) and iron (Fe≈1-3%). These make it better than the earlier B2 alloy in corrosion and heat resistance.
Hastelloy B3 polished bar is widely used in chemical industry (reactors, pumps and valves), pharmaceutical industry (hygienic parts), environmental protection (desulfurization systems) and nuclear industry. It can stand strong corrosive media like hydrochloric acid and sulfuric acid. The high finish surface of Hastelloy B3 polished bar is good for clean environments. It also has excellent high temperature stability. But it should not be used in oxidizing conditions.
Features of Hastelloy B3 polished bar
Excellent corrosion resistance: Hastelloy B3 polished bar performs well in reducing acids (such as hydrochloric acid, sulfuric acid) and strong acid media. It is especially resistant to corrosion by hydrochloric acid of any concentration below boiling point. It also has excellent resistance to pitting and stress corrosion cracking (SCC).
Enhanced thermal stability: By adjusting its composition, Hastelloy B3 polished bar has less sensitivity to precipitate phases at high temperatures than B2 alloy. It can remain stable when used for a long time below 600℃.
Superior mechanical properties: The combination of high strength (tensile strength≥760MPa) and good ductility (elongation≥40%) of Hastelloy B3 polished bar makes it suitable for high stress environments.
Surface polishing advantages: The polished surface of Hastelloy B3 polished bar reduces surface roughness. It lowers the risk of medium adhesion and local corrosion. It is suitable for scenes with high cleanliness requirements.
Applications of Hastelloy B3 polished bar
Chemical equipment: Hastelloy B3 polished bar is used to make reactors, heat exchangers, pump and valve components. It can handle strong corrosive media like concentrated hydrochloric acid and acetic acid.
Pharmaceutical and food engineering: The polished surface of Hastelloy B3 polished bar meets sanitary standards. It is suitable for pipes, agitator shafts and other parts in drug production.
Environmental protection field: Hastelloy B3 polished bar is used in fastening and sealing parts of flue gas desulfurization (FGD) systems. It can endure the acidic environment containing chloride ions.
Nuclear industry: Hastelloy B3 polished bar is used in acid-resistant structural parts of radioactive waste treatment devices to ensure long-term reliability.
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Parameter |
Specification |
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Diameter |
Standard: 5-200mm, Precision: ±0.02mm, Hex/Square bars available |
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Length |
Fixed: 1-6m, Custom up to 12m |
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Surface Finish |
Mirror polish: ≤0.4μm, Standard polish: ≤0.8μm, Pickled: ≤1.6μm |
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Tensile Strength |
≥760MPa (RT), ≥550MPa (400°C) |
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Yield Strength |
≥350MPa (RT), ≥300MPa (400°C) |
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Elongation |
≥40% (50mm gauge) |
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Hardness |
HRB≤90, HV≤220 |
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Chemical Composition |
Ni≥65%, Mo28-30%, Cr1-3%, Fe1-3%, Mn≤1.0%, Si≤0.1%, C≤0.01% |
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Heat Treatment |
Solution annealed (1050-1150°C water quench) |
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Surface Options |
Polished/Pickled/Passivated/Oil-free (pharma grade) |
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Special Customization |
Ultra-low carbon (C≤0.005%), Vacuum melted, Non-standard tolerance (±0.01mm) |
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Corrosion Resistance |
Resistant to HCl (all conc.), H2SO4 (≤70%), H3PO4, CH3COOH. Avoid HNO3 |
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Typical Applications |
Chemical shafts, Pharma reactor agitators, Nuclear waste container fasteners |
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 B3 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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