Comparison information of Hastelloy C276 / Hastelloy B2 round bars
Gnee Steel
Comparison information of Hastelloy C276 / Hastelloy B2 round bars
Hastelloy C276 bars (nickel-chromium-molybdenum alloy) offer broad corrosion resistance, making them suitable for both redox and high-temperature environments, and thus have a wide range of applications. Hastelloy B2 (nickel-molybdenum alloy), on the other hand, excels particularly in strong reducing acids (such as hydrochloric acid). Its molybdenum content contributes to its superior strength in harsh chemical environments, although C276 alloy bars generally handle a wider variety of corrosive media and temperatures better. B2 bars are more suitable for reducing acids, while C276 round bars are better suited for mixed/oxidizing/high-temperature environments.
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What is Hastelloy C276?
Hastelloy C-276 alloy (UNS N10276) is the first forged nickel-chromium-molybdenum alloy material. Due to its extremely low carbon and silicon content, it effectively alleviates many problems in the welding process.
Hastelloy C276 rods are rod-shaped profiles made of a nickel-molybdenum-chromium-tungsten superalloy (Hastelloy C-276). Their core advantage is their near-universal corrosion resistance, effectively resisting extreme corrosive media such as strong oxidizing and reducing acids, mixed acids, chlorides, wet chlorine gas, and harsh acidic salt solutions. They exhibit particularly excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking. They are primarily used in the manufacture and processing of critical components in the most corrosive industrial environments, such as chemical pumps and valves, agitator shafts, reactor internals, marine engineering fasteners, and flue gas desulfurization system components. They are currently the top-tier rod-shaped raw material with the broadest corrosion resistance range among commercial alloys.
Hastelloy B-2 rods are rod-shaped profiles made of a nickel-molybdenum alloy (Hastelloy B-2). Their core characteristic is excellent corrosion resistance in reducing acidic media (especially non-oxidizing acids such as hydrochloric acid, sulfuric acid, and phosphoric acid) and high-temperature chloride environments, but they may become embrittled in oxidizing media or at high temperatures. It is mainly used in the manufacture and processing of chemical equipment, pickling equipment, reactors and key components that need to resist corrosion by strong reducing acids in reducing environments. It is a special material for handling harsh media such as hydrochloric acid, but attention should be paid to its sensitivity during processing and heat treatment.
Specification of Hastelloy C276 / B2 Round Bars
Specifications : ASTM B574 / ASME SB574
Dimentions : ASTM, ASME and API
Size : 10 mm To 100 mm Dia in 100 mm TO 6000 mm Length.
Length : 3 to 6 meter, Custom Cut Lengths
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Form : Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging Etc.,
Condition : Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished
Equivalent Grades of C276 / B2 Round Bars & Rods
| STANDARD | UNS | WNR. | JIS | GOST | EN | OR |
| Hastelloy C276 | N10276 | 2.4819 | NW 0276 | ХН65МВУ | NiMo16Cr15W | ЭП760 |
| Hastelloy C22 | N06022 | 2.4602 | NW 6022 | - | NiCr21Mo14W | - |
| Hastelloy B2 | N10665 | 2.4617 | - | - | - | - |
Chemical Composition of Hastelloy C276 / B2 Round Rods
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| C276 | 0.010 max | 1.00 max | 0.08 max | 0.03 max | 2.50 max | 50.99 min* | 14.50 – 16.50 | 4.00 – 7.00 | 15.00 – 17.00 | 0.04 max |
| C22 | 0.010 max | 0.50 max | 0.08 max | 0.02 max | 2.50 max | 50.015 min* | 20.00 – 22.50 | 2.00 – 6.00 | 12.50 – 14.50 | 0.02 max |
| B2 | 0.02 max | 1.0 max | 0.1 max | 0.03 max | 1.0 max | Bal | 1.0 max | 2.0 max | 26 – 30 | 0.04 max |
Hastelloy C276 / B2 Round Bars Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy C276 | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
| Hastelloy C22 | 8.69 g/cm3 | 1399 °C (2550 °F) | Psi – 1,00,000 , MPa – 690 | Psi – 45000 , MPa – 310 | 45 % |
| Hastelloy B2 | 9.2 g/cm3 | 1370 °C (2500 ºF ) | Psi – 1,10,000 , MPa – 760 | Psi – 51000 , MPa – 350 | 40 % |
Applications of Hastelloy C-276 Round Bar vs Hastelloy B-2 Bar
| Industry / Application Area | Hastelloy C-276 Round Bar Applications | Hastelloy B-2 Bar Applications |
|---|---|---|
| Chemical Processing | Reactors, columns, agitators, heat exchangers, valves, pump shafts in oxidizing and reducing acids, mixed acids, chlorides | Reactors, distillation columns, heat exchangers, piping, pump components in strong reducing acids (e.g., HCl, H₂SO₄) |
| Pharmaceutical | Vessels, mixers, piping for aggressive halogenated and oxidizing chemical synthesis | Equipment for high-purity hydrochloric, sulfuric, and phosphoric acid processes, acid recovery units |
| Pollution Control | Scrubbers, ducting, fans, stack internals in flue gas desulfurization (FGD), waste incineration systems | Scrubbers, piping, and tanks for highly acidic waste streams, especially containing chlorides and reducing acids |
| Acid Production & Handling | Sulfuric acid, phosphoric acid, nitric acid production equipment; chlorine and hypochlorite environments | Concentrated hydrochloric acid and sulfuric acid production, storage, heating, and transportation systems |
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
About Gnee Steel
Gnee Steel is a professional manufacturer of nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneemetal.com for a quote.
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