Лист из Хастеллой B2
Hastelloy B2 plate is a flat,semi-finished industrial metal segment made from Alloy B2,which is a specialized solid-solution strengthened nickel-molybdenum superalloy.
It is engineered primarily for structural fabrication in heavy-duty chemical processing plants.Unlike standard stainless steels,it contains virtually no chromium,meaning it is built explicitly to survive highly aggressive reducing chemical environments rather than oxidizing ones.
It is engineered primarily for structural fabrication in heavy-duty chemical processing plants.Unlike standard stainless steels,it contains virtually no chromium,meaning it is built explicitly to survive highly aggressive reducing chemical environments rather than oxidizing ones.
Core Characteristics & Advantages
- Hydrochloric Acid Resistance:
It provides unparalleled defense against all concentrations and temperatures of hydrochloric acid. - Immunity to Other Reducing Acids:
It easily withstands pure sulfuric,phosphoric,and acetic acids. - As-Welded Suitability:
Engineered with minimal carbon and silicon,it controls the formation of grain-boundary carbide precipitates in the weld zone.This completely stops intergranular and knife-edge corrosion,eliminating the need for post-weld annealing. - High Mechanical Strengths:
Features a minimum tensile strength of 760 MPa and a minimum yield strength of 350 MPa.
Applications of Hastelloy B2 Plate
- Reactor vessels
- Distillation columns
- Теплообменники
- Acid piping
- Industrial valves
- Chemical pumps
- Storage tanks
- Agitator blades
- Scrubber systems
- Alkylation units
- Evaporator pans
- Centrifuge baskets
- Thermocouple wells
- Pickling tanks
We offer Hastelloy B2 plates and sheets in thicknesses of 2.0, 3.0, and 4.0.We offer not only листы нержавеющей стали а также листы и пластины из Hastelloy, Incoloy, Inconel, Monel и других сплавов.Наша продукция соответствует стандартам ASTM A240, EN 10204, ISO 9001, PED 2014/68/EU, CE и другим. Имея более чем десятилетний опыт в производстве и импорте/экспорте, мы являемся вашим лучшим оптовым поставщиком в Китае.
Chemical Composition of Hastelloy B2 Plate
| Ni | Пн | Fe | Cr | Co | Mn | Si | C | п | S |
|---|---|---|---|---|---|---|---|---|---|
| Остаток средств | 26.0 – 30.0 | ≤ 2.0 | ≤ 1.0 | ≤ 1.0 | ≤ 1.0 | ≤ 0.10 | ≤ 0.02 | ≤ 0.04 | ≤ 0.03 |
- Никель:
Provides excellent ductility,high-temperature structural stability,and absolute immunity against chloride-induced SCC. - Молибден:
The main alloying element that delivers extreme resistance against aggressive reducing chemistry,particularly boiling hydrochloric acid at all concentrations. - Carbon & Silicon:
Drastically reduced compared to its predecessor.This suppression stops carbide precipitation at grain boundaries during welding,allowing plates to be deployed safely in an as-welded state without post-weld annealing. - Хром:
Kept to an absolute minimum.The lack of chromium means this plate cannot handle oxidizing media and will corrode rapidly if exposed to them.
Hastelloy B2 Standards & Equivalent Designations
| Hastelloy B2 Alloy | |
|---|---|
| Стандарт / Система | Эквивалентное обозначение |
| Номер UNS | UNS N10665 |
| DIN / Немецкий стандарт материалов | W.Nr. 2.4617 / 2.4615 |
| EN Химическое название | NiMo28 |
| Международная организация | ISO NW0665 / ISO 6208 |
| Китайский GB | NS322 |
| JIS | JIS H4551 / H4552 |
| AFNOR | NU-30M |
| Торговые наименования | Alloy B2, Hastelloy B2, Nickel Alloy B2 |
- Plates, Sheets, & Strips: ASTM B333 / ASME SB333
- Seamless Pipe & Tube: ASTM B622 / ASME SB622
- Welded Pipe: ASTM B619 / ASME SB619
- Welded Heat Exchanger Tubes: ASTM B626 / ASME SB626
- Bars, Rods, & Wires: ASTM B335 / ASME SB335
- Forgings & Flanges: ASTM B564 / ASME SB564
- Factory-Made Pipe Fittings: ASTM B366 / ASME SB366
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Kaysuns is a professional supplier of Hastelloy B2 Plates.Please feel free to contact me if you have any requirements.
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Mechanical Properties of Hastelloy B2 Plate
| Механические свойства | Предел прочности | Предел текучести, 0,2% | Удлинение | Твердость |
|---|---|---|---|---|
| Минимальное значение | ≥ 760 МПа (110 ksi) | ≥ 350 МПа (51 ksi) | ≥ 40% | ≤ 241 HBW(100 HRB) |
Physical Performance & Behavior
- Высокая пластичность:
It can be bent,rolled,and shaped safely without cracking. - Work Hardening Rates:
Heavy-duty,rigid machinery and sharp,carbide-tipped cutting tools are mandatory during drilling or milling operations. - Charpy V-Notch Impact Toughness:
Exhibits excellent cryogenic and room-temperature structural toughness.It does not suffer a sudden ductile-to-brittle transition at low temperatures.
Temperature Limits & Thermal Embrittlement
- The Danger Zone (1000°F – 1600°F / 538°C – 871°C):
If exposed to this specific temperature window during service,the alloy forms brittle intermetallic phases (β-Ni₄Mo and γ-Ni₃Mo).This causes a catastrophic drop in ductility,dropping elongation values close to 0% and rendering the plate brittle. - ASME Code Design Limit:
Because of this thermal embrittlement,ASME Section VIII restricts the use of Hastelloy B2 plates in structural pressure vessel boundary applications to a maximum temperature of 800°F (427°C).
Main Manufacturing Methods for Hastelloy B2 Plate
Горячая прокатка
Hot rolling is the initial step in processing Hastelloy B2 slabs into thick-gauge plates.Slabs are heated and rolled between 1093°C and 1232°C.This intense thermal deformation forces dynamic recrystallization,which eliminates casting segregation,refines grain structures,and ensures excellent internal density alongside uniform mechanical properties across the plate.
Холодная прокатка
Cold rolling processes hot-rolled plates at room temperature to achieve precise thickness,superior surface finishes,and high tensile strength.Because Hastelloy B2 work-hardens rapidly,hardness spikes while ductility plummets under rolling pressure.An intermediate solution annealing treatment is mandatory at 30% to 40% thickness reduction to prevent cracking.
Отжиг раствора и термическая обработка
Solution annealing is the most critical step for restoring final corrosion resistance and mechanical performance.Plates are heated between 1065°C and 1175°C to dissolve carbides back into the matrix.They must be rapidly water-quenched to bypass the dangerous 538°C–871°C window,preventing brittle phase precipitation at the grain boundaries.
Склеивание под действием взрыва
This process uses synchronized mechanical and chemical treatments to remove the stubborn oxide scale formed during high-temperature rolling.Plates are first shot-blasted to fracture the oxide shell,then immersed in hot sulfuric acid followed by a hydrochloric acid mixture.This reveals a clean,passivated finish meeting ASTM B333 standards.
FAQs About Hastelloy B2 Plate
Нет.Hastelloy B2 contains virtually no chromium.Because of this,it has zero resistance to oxidizing chemicals like nitric acid,ferric chloride,cupric salts,or wet chlorine gas.Exposure to these media will cause rapid,catastrophic corrosion failure.
The maximum design temperature for Hastelloy B2 in structural pressure applications is 800°F (427°C).It must never be used in the 1000°F to 1600°F (538°C–871°C) range due to severe thermal embrittlement.
Like most nickel-base superalloys,Hastelloy B2 exhibits a very high work-hardening rate.During drilling,milling,or cutting,the material hardens instantly under the tool.Overcoming this requires rigid machinery,sharp carbide tools,positive feed rates,and heavy lubrication.
Our Hastelloy B2 plates in thicknesses of 2.0, 3.0, and 4.0 are in stock.Non-standard sizes can be customized.
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