01
Hastelloy B-2 Round Bar
Solid rounds from 6 to 300 mm serve pump shafts, valve stems and machined acid-plant parts.
Request Availability →Hastelloy B‑2 Bar and Rod
Nickel-molybdenum bar and rod built for hydrochloric and sulfuric acid service where standard stainless grades fail.
Solution-Annealed Supply
Hastelloy B-2 bar is heat treated and quenched before cutting, not left sensitized.
Heat-Number Traceability
Each bar ships with an EN 10204 3.1 certificate tied to its melt.
Reducing-Acid Sourcing
Stock, sizes and documents centre on hydrochloric and sulfuric acid duty.
PRODUCT OVERVIEW
About Hastelloy B‑2 Bar and Rod
Hastelloy B-2 Bar and Rod is a nickel-molybdenum alloy supplied to UNS N10665 / W.Nr. 2.4617, with very low chromium content. Its high molybdenum content provides strong resistance to hydrochloric, sulfuric, and other reducing acids, making it suitable for demanding chemical processing environments.
We supply Hastelloy B-2 bar and rod to ASTM B335 / ASME SB335 in the solution-annealed and cold-finished conditions specified for your application. To control precipitation-related metallurgical changes, the material is solution annealed and rapidly quenched before final processing. For the alloy background behind the grade, see our Hastelloy B-2 nickel-molybdenum alloy overview.
PRODUCT FEATURES
Key Features of Hastelloy B‑2 Bar and Rod
Hastelloy B-2 is a nickel-molybdenum alloy with very low chromium, built for reducing-acid service such as hydrochloric and sulfuric acid. Southerly Alloy supplies UNS N10665 bar and rod to ASTM B335 in solution-annealed and cold-drawn conditions, with custom sizes, surface finishes and mill test documentation. Hydrochloric acid plants, pickling lines and acid-recovery projects are typical buyers of this bar.
Hastelloy B-2
Hydrochloric Acid Resistance
Performs across all concentrations and temperatures up to boiling.
01
Reducing Sulfuric Acid Resistance
Handles sulfuric and phosphoric acid in non-oxidizing conditions.
02
Chloride Stress-Corrosion Resistance
Withstands chloride cracking where oxidants stay absent.
03
High Molybdenum Content
Molybdenum at 26 to 30 percent drives the reducing-acid performance.
04
Product Forms
Round, hex, square, flat and forged bar support machining needs.
05
Size Flexibility
Stock and custom diameters are cut to your ordered lengths.
06
Heat-Treatment Control
Sensitive to mid-temperature precipitation, so the material is quenched promptly after solution annealing.
07
Full Heat Traceability
Mill test certificates carry the heat number on every delivery.
08
from Southerly Alloy
Why Choose Hastelloy B‑2 Bar and Rod
Southerly Alloy provides Hastelloy B-2 bar and rod with controlled solution annealing and rapid quenching for demanding corrosion-resistant applications. We verify the material condition, chemical composition, and heat-treatment requirements against your specification before final processing and delivery.
01
Chemistry Matched to Order
We confirm molybdenum and iron limits against your specification before melting.
02
Quench-Controlled Route
Bars and rods are rapidly cooled after solution anneal to keep corrosion resistance.
03
Trial-to-Order Supply
One test bar and a full run share the same annealed and quenched route.
04
Technical Response
Metallurgists answer reducing-acid, heat-treatment and documentation questions.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
We melt Hastelloy B-2 from nickel, molybdenum, and iron, then keep iron and chromium very low. The alloy is solution annealed and rapidly quenched, because it loses corrosion resistance if cooled slowly through the mid-temperature range.
01
Charge Weighing
Nickel, molybdenum and iron are weighed to the UNS N10665 chemistry window.
02
Melting and Refining
The charge is melted and refined to hold carbon and silicon within tight limits.
03
Hot Working
Ingots are forged and rolled to bar section, refining the cast structure as size reduces.
04
Solution Annealing
Bars are heated to 1065–1070 °C, then rapidly water quenched to restore corrosion resistance.
05
Cold Finishing
Drawing, peeling or centerless grinding brings the bar to the ordered diameter.
06
Surface Treatment
Pickling removes scale so the surface stays clean for acid service.
07
Precipitation Control
Cooling is tracked through the 550 to 1050 °C range to avoid brittle phases.
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Final Verification
Chemistry, tensile properties and dimensions are checked before the bar is released.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
We produce Hastelloy B-2 bar in stock and made-to-order diameters and keep it solution annealed before cutting. The figures below cover the melting, quenching and testing capacity behind that commitment, with the precipitation risk controlled in processing.
20,000+ m²
Factory Area
Melting, annealing and pickling lines share one works.
50+
Production Machines
Units run hot working, quenching and surface finishing.
600 Tons
Monthly Capacity
Nickel-molybdenum bar output spans stock and custom diameters.
30+
Technical Engineers
Metallurgists review reducing-acid and heat-treatment specifications with you.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
We release no bar until the ordered ASTM B335 requirements are proven on the heat. A spectrometer confirms chemistry against the N10665 window, and tensile, hardness, and intergranular checks are recorded where your specification requires them.
01
Chemistry Against N10665
We measure molybdenum and iron levels per heat against the ASTM B335 limits.
02
Mechanical Testing on the Ordered Condition
Tensile, yield and hardness results are recorded for the condition shipped.
03
Surface and Dimensional Checks
Diameter, straightness and finish are measured to the applicable B335 tolerance.
04
Heat-Linked Documentation
Certificates carry the heat number, so incoming inspection can trace any bar.
PRODUCT FORMS
Available Product Forms
Hastelloy B-2 bar and rod is produced in round, square, hex, flat and forged sections for machining into acid-plant components. We quote each form with its own condition, tolerance and finish route.
02
Hastelloy B-2 Round Rod
Smaller drawn stock with controlled straightness fits fasteners and instrument fittings.
Request Availability →
03
Hastelloy B-2 Bright Bar
Cold-drawn finish with tight diameter control suits automatic lathes.
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04
Hastelloy B-2 Cold-Drawn Bar
Higher yield strength from the as-drawn condition, stress-relieved where straightness matters.
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05
Hastelloy B-2 Hex Bar
Hexagonal sections sized across flats suit bolting and multi-flat valve components.
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06
Hastelloy B-2 Square Bar
Square sections cut to width and length serve supports and fabricated frames.
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07
Hastelloy B-2 Flat Bar
Rectangular sections supplied to thickness and width serve acid-duty hardware.
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08
Hastelloy B-2 Forged Bar
Larger diameters and shaped sections with a controlled wrought structure suit heavy valve bodies.
Request Availability →
09
Centreless-Ground Rod
Rod finished by centerless grinding for tight diameter, straightness and clean shafting surfaces.
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APPLICATIONS
Engineered For Demanding Industries
Hastelloy B-2 bar and rod is chosen where components face strictly reducing acids with no oxidants present. Typical work covers hydrochloric and sulfuric acid plants, pickling lines and acid-recovery systems.
Discuss Your Application →
01
Hydrochloric Acid Service
Reactor internals, agitators and pump parts in HCl up to boiling.
02
Sulfuric Acid Processing
Mixer shafts, heat exchanger parts and fittings in reducing H₂SO₄ duty.
03
Phosphoric Acid Production
Wet-process acid pumps, agitators and transfer fittings.
04
Acetic Acid Recovery
Reboilers, columns and transfer parts in reducing acid recovery.
05
Pickling and Metal Finishing
Tank heaters, racks and fixtures in hydrochloric and sulfuric pickling.
06
Chemical Reactor Internals
Dip tubes, baffles and agitator shafts in strictly reducing streams.
07
Pollution Control Scrubbers
Scrubber and duct hardware in acidic flue-gas treatment.
08
Pharmaceutical Solvent Recovery
Columns and reactors for acid-bearing solvent recovery.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The limits below follow ASTM B335 for UNS N10665 bar and rod, with nickel as the balance of the melt. Because chromium is kept very low, the alloy is built for reducing media rather than oxidizing duty, and the mill test certificate governs final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) | Balance (≥ 63%) |
| Molybdenum (Mo) | 26.0–30.0% |
| Iron (Fe) | 2.0 max |
| Chromium (Cr) | 1.0 max |
| Cobalt (Co) | 1.0 max |
| Manganese (Mn) | 1.0 max |
| Carbon (C) | 0.010 max |
| Silicon (Si) | 0.10 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
Mechanical Properties
Values below separate the ASTM B335 minimums from results typically measured on solution-annealed bar. The standard sets one condition for rod and bar; therefore, we agree cold-drawn or high-strength requirements at quotation. Confirm the ordered condition with your enquiry.
| Condition | Tensile Strength | Yield Strength (0.2%) | Elongation | Hardness |
|---|---|---|---|---|
| Solution Annealed — ASTM B335 minimum | ≥110 ksi (760 MPa) | ≥51 ksi (350 MPa) | 40% | 100 HRB max. |
| Solution Annealed — typical values | 760–965 MPa (110–140 ksi) | 350–550 MPa (51–80 ksi) | 40–60% | ≤100 HRB (≈235 HB) |
Hastelloy B-2 is not age-hardenable, so any strength above the annealed minimum comes from cold work. Bar for corrosion duty is usually ordered to a hardness ceiling as well as a strength floor.
Physical Properties
Typical room-temperature values below support design work rather than acceptance testing. In addition, Hastelloy B-2 stays non-magnetic at ambient temperature, which suits instrument and magnetically sensitive assemblies.
| Property | Value |
|---|---|
| Density | Approx. 9.22 g/cm³ |
| Melting range | Approx. 1370–1400 °C |
| Modulus of elasticity | Approx. 210 GPa |
| Thermal conductivity at 100 °C | Approx. 10.4 W/m·K |
| Coefficient of thermal expansion, 20–100 °C | Approx. 11.1 µm/m·K |
| Electrical resistivity at 20 °C | Approx. 1.22 µΩ·m |
| Magnetic behaviour | Non-magnetic at ambient temperature |
Standards
ASTM B335 governs bar and rod; ASME SB335 serves pressure equipment. Specifically, the designations below are cross-reference identifiers rather than separate approvals. ASTM International publishes the full specification.
| Standard / Designation | Scope |
|---|---|
| ASTM B335 | Nickel-molybdenum alloy rod and bar — UNS N10665 |
| ASME SB335 | ASME edition for rod and bar |
| ASTM B333 | Plate, sheet and strip in the same grade |
| ASTM B564 / ASME SB564 | Nickel alloy forgings — UNS N10665 |
| ASTM B366 | Factory-made wrought fittings in the same grade |
| DIN 17752 / 17753 / 17754 | Wrought nickel alloys — bar, wire and forging stock |
| UNS N10665 | Material designation for Hastelloy B-2 |
| W.Nr. 2.4617 / NiMo28 | European designation for Alloy B-2 |
| QQ-N-281 | U.S. Navy nickel alloy bar specification |
| BS 3076 NA13 | British nickel-molybdenum bar standard |
| VdTÜV 263 | German pressure vessel material data sheet |
| NACE MR0175 / ISO 15156 | Sour service reference where the order requires review |
Dimensions
Ranges below reflect normally produced sections; however, exact availability depends on condition, finish, and quantity, confirmed at quotation. Tolerances follow ASTM B335 for the ordered condition. We review diameters and lengths outside these ranges against the production route before quotation.
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 6–300 mm dia. | Cut to length or random |
| Round Rod | 3–100 mm dia. | Cut to length |
| Bright Bar | 6–150 mm dia. | Cut to length or random |
| Square Bar | 10–150 mm | Cut to length or random |
| Hex Bar | 10–150 mm A/F | Cut to length or random |
| Flat Bar | 3–100 mm thick × 10–300 mm wide | Cut to length |
| Forged Bar | 100–500 mm dia. or forged section | Cut to length |
| Precision-Ground Rod | 3–100 mm dia., tight tolerance | Cut to length |
Surface Finishes
You choose the finish for the next operation, whether machining allowance, acid-service exposure, or a visible assembly. Availability depends on diameter, condition, and order quantity. In addition, we agree each finish with the order rather than assume it from stock.
| Surface Condition | Typical Use |
|---|---|
| Annealed and pickled | Standard delivery for hydrochloric and sulfuric acid service |
| Hot-worked (as-rolled or forged) | Parts that will be machined to size |
| Cold drawn | Close diameter control with a brighter surface |
| Peeled | Uniform diameter with a machined skin for further turning |
| Centerless ground | Tight diameter and straightness for shafting |
| Polished | Reduced roughness for product-contact and visible parts |
| Rough turned | Machining allowance held on large or forged bar |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 6 Simple Steps
One coordinator keeps your Hastelloy B-2 order moving from enquiry to shipment. We confirm the reducing-acid service and the heat-treatment route before cutting, and the technical team reviews chloride and oxidant limits with you.
1
Send the Service Details
Give the acid, concentration, temperature, diameter, length and quantity.
2
Confirm the Condition
Agree solution-annealed, cold-drawn or forged against your machining route.
3
Receive a Quotation
Price, lead time and document set come back in one reply.
4
Approve the Specification
Grade, dimensions, inspection level and delivery terms are recorded before cutting.
5
Produce and Test
The heat is melted, annealed, quenched and tested to the ordered condition.
6
Release and Ship
Certificates and export paperwork travel with the bar, and delivery terms are confirmed.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The Hastelloy B-2 rod for our HCl absorber arrived with molybdenum confirmed on the certificate, exactly as our specification asked.”
★★★★★
“We ordered solution-annealed B-2 bar for a sulfuric acid retrofit; the quench record came with the mill certificate, so inspection passed first time.”
★★★★★
“A trial bar verified the pickled surface and straightness first, then we placed the full acid-plant order.”
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which ASTM specification covers Hastelloy B-2 bar and rod?
ASTM B335 / ASME SB335.
Is Hastelloy B-2 bar resistant to hydrochloric acid?
Yes. It resists hydrochloric acid across all concentrations up to boiling, in strictly reducing conditions.
Can Hastelloy B-2 bar be used in oxidizing environments?
No. The low chromium content leaves it vulnerable to oxidants such as nitric acid and ferric ions.
Which sizes of Hastelloy B-2 bar can you supply?
6–300 mm round bar, with rod from 3 mm and hex, square, and flat sections to 150 mm.
Can you supply custom Hastelloy B-2 bar and rod?
Yes. Drawing, peeling, grinding and cut-to-length cover sizes outside stock.
What is your MOQ for Hastelloy B-2 bar?
One bar for most stock diameters.
What are your trade terms for Hastelloy B-2 bar?
Mainly FOB; we also quote EXW and CIF.
How is the price of Hastelloy B-2 bar calculated?
Mainly on weight, with the nickel and molybdenum share fixed in the quotation.
What is the lead time for Hastelloy B-2 bar?
7–15 days for stock sizes; about 25 days for made-to-order annealed bar.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. 3.1 mill certificates are supplied with the order, and we arrange 3.2 and third-party witness on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the acid, concentration, temperature and dimensions you need, and we will reply with price, lead time and documents in one message. Because we confirm the heat-treatment route before production, the bar you approve is the bar that ships.
