01
Hastelloy B-2 Round Bar
Solid rounds across the B335 window machine into replacement pump shafts and valve stems.
View Hastelloy B-2 Round Bar →Hastelloy B-2 Bar and Rod
Grade N10665 bar for legacy HCl plants, replacement internals and acid-regeneration hardware.
Sizes Inside the Rod Standard
Because ASTM B335 sets one window from 7.94 to 88.9 mm, every diameter we quote sits inside it.
Quench Record with Every Lot
Moreover, the solution anneal runs at 1065–1095 °C, and the cooling log travels beside the heat number.
Replacement Parts Without Re-Rating
Therefore, a one-to-one swap in N10665 keeps the vessel drawing and the piping class exactly as they stand.
PRODUCT OVERVIEW
About Hastelloy B-2 Bar and Rod
Hastelloy B-2 Bar and Rod covers UNS N10665, a nickel-molybdenum alloy with chromium at 1% or below. Most orders replace parts already in service, so the drawing drives the specification. Above 540 °C the Ni4Mo phase orders, and quench discipline settles that risk.
Meanwhile, ASTM B335 governs rod from 7.94 to 88.9 mm in the solution-annealed state, and sections above that ceiling follow ASTM B564 as forged bar. Besides, each lot ships with a heat number, a quench record and an EN 10204 3.1 certificate. The Hastelloy B-2 hub holds the full grade file, while tubular and flat-rolled product have Hastelloy B-2 Pipe and Tube and Hastelloy B-2 Plate and Sheet pages of their own.
PRODUCT FEATURES
Key Features of Hastelloy B-2 Bar and Rod
Hastelloy B-2 bar and rod carries the UNS N10665 grade, a nickel-molybdenum alloy with chromium held at or below 1%. Replacement internals, column trays and non-welded machined parts make up most of the orders we ship on this route. ASTM B335 sets the rod window from 7.94 to 88.9 mm, hot or cold finished and solution annealed, and heavier sections follow ASTM B564 as forged bar. Every lot leaves solution annealed at 1065–1095 °C and water quenched, with chemistry, tensile results and EN 10204 3.1 papers tied to its heat number.
Hastelloy B-2
Legacy Interchange Kept Exact
Because N10665 chemistry and mechanics do not move between heats, a replacement part fits the drawing already on file.
01
Hydrogen Chloride Synthesis Duty
Moreover, wet HCl gas and absorption liquor meet a surface that carries almost no chromium to oxidise.
02
Acid Regeneration and Pickling
Besides, waste-acid regeneration and steel pickling hardware run on this grade wherever oxidants stay out.
03
Chloride Cracking Immunity
Nickel at the balance of the melt keeps chloride-bearing media from cracking the surface under stress.
04
No Aging Response
Therefore, cold drawing and peeling set yield above the annealed floor, and no aging treatment follows.
05
Weld Zones Need an Anneal
Consequently, carbon at 0.02% max holds precipitation back, yet severe acid duty still calls for a post-weld solution anneal near 1100 °C.
06
Sizes Inside the Standard
Meanwhile, every diameter we quote falls inside the 7.94 to 88.9 mm window ASTM B335 defines.
07
Above-Range Supply Route
Finally, heavier sections arrive as forged bar to ASTM B564 rather than as standard rod.
08
WHY CHOOSE US
Why Choose Hastelloy B-2
Two questions shape every Hastelloy B-2 bar order. First, whether the diameters you need sit inside the 7.94 to 88.9 mm window of ASTM B335. Then, how fast the mill certificate and the export papers follow the shipment.
01
Diameters Checked Before Quoting
We compare the ordered size with the rod window first, so nothing ships against a standard it cannot meet.
02
Heat-Linked Documents
Moreover, EN 10204 3.1 certificates carry chemistry, tensile results and the quench log for the melt.
03
Machined to Your Drawing
Besides, drawing, peeling, centreless grinding and cut-to-length work cover sections outside the stocked range.
04
Export Packing and Terms
Finally, we crate to the destination, and FOB, CIF or DAP terms follow the port you name.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Melting aims at one target, which is keeping iron and chromium low enough to hold off Ni4Mo. The melt shop then solution anneals and quenches every lot before the bar reaches a machine.
01
Charge Weighing
Nickel, molybdenum and iron go into the furnace against the N10665 window.
02
Melt Refining
The furnace holds carbon, silicon and iron inside the ASTM limits.
03
Hot Reduction
Forging and rolling break up the cast structure as the section shrinks.
04
Solution Annealing
The mill heats the bar to 1065–1095 °C and holds it long enough to dissolve precipitated phases.
05
Rapid Quenching
A water quench freezes the single-phase structure before Ni4Mo can order.
06
Cold Finishing
Then drawing, peeling or centreless grinding brings the rod to the ordered diameter.
07
Descaling
Pickling leaves a clean surface for acid-plant machining.
08
Release Testing
Chemistry, tensile results and dimensions clear before the lot leaves the works.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
As a Hastelloy B-2 bar supplier, we share melting, quench and finishing capacity with the other corrosion grades we handle. Consequently, an order against a stock diameter rarely waits on a furnace campaign.
20,000+ m²
Site Area
Melt shop, quench tank and finishing bays sit inside one works.
50+
Machines in Service
Hot working, drawing and centreless grinding make up the bar line.
600 Tons
Monthly Bar Output
Stock diameters and order-specific melts share the same campaign.
30+
Metallurgists on Staff
The heat-treatment route and the acid duty get reviewed before release.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Release depends on evidence rather than assumption. Chemistry runs against the N10665 window, and mechanical results follow the condition you ordered.
01
Chemistry Against N10665
We compare spectrometer readings for molybdenum, iron and carbon with the ASTM B335 limits.
02
Mechanical Results on the Shipped Condition
Tensile, yield and elongation figures come from the rod you actually receive.
03
Dimension and Surface Audit
The inspection bay measures diameter, straightness and surface state before packing.
04
Quench Record Attached
Each certificate names the heat number that points back to the annealing and cooling log.
PRODUCT FORMS
Available Product Forms
Section shape decides how the bar machines, so name the form beside the diameter. Each of the six forms below carries its own page with the section range and the document route.
02
Hastelloy B-2 Forged Bar
Open-die work covers valve bodies and diameters past the rod ceiling under ASTM B564.
View Hastelloy B-2 Forged Bar →
03
Hastelloy B-2 Bright Bar
A drawn or peeled skin keeps diameter steady across long automatic-lathe runs.
View Hastelloy B-2 Bright Bar →
04
Hastelloy B-2 Centreless-Ground Rod
Ground diameter and straightness suit spares for shafts and metering plungers.
View Hastelloy B-2 Centreless-Ground Rod →
05
Hastelloy B-2 Hex Bar
Across-flats sections serve bolting and multi-flat valve components.
View Hastelloy B-2 Hex Bar →
06
Hastelloy B-2 Welding Wire
ERNiMo-7 bare wire and ENiMo-7 electrodes deposit the parent Ni-Mo analysis into repair joints.
View Hastelloy B-2 Welding Wire →
APPLICATIONS
Engineered For Demanding Industries
Bar stock for this grade goes where a component meets reducing acid and no oxidant enters the circuit. Consequently, most of it reaches HCl synthesis, acid regeneration and pickling plants, and much of that replaces parts already in service.
Discuss Your Application →
01
Hydrogen Chloride Synthesis
Reactor internals, dip tubes and agitator parts for wet HCl gas and absorption liquor.
02
HCl Absorption Towers
Column trays, packing supports and distributor hardware in hydrochloric acid service.
03
Acid Regeneration Plants
Reboiler shells, dip tubes and pump parts for waste-acid regeneration circuits.
04
Steel Pickling Lines
Tank heaters, immersion racks and handling fixtures in hydrochloric pickling baths.
05
Acetic and Formic Acid Duty
Column hardware for reducing organic acid service where chlorides stay low.
06
Acid Storage and Transfer
Pump bodies, valve trim and dip pipes for hydrochloric acid storage and transfer duty.
07
Vacuum Furnace Hardware
Supports, hearth fixtures and shielding for vacuum service, where the grade stays non-magnetic.
08
Fine Chemical Machined Parts
Non-welded machined components for strictly reducing streams in fine chemical plants.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
Limits below follow ASTM B335 for UNS N10665 rod, and nickel makes up the balance of the melt. Iron and chromium stay low because both drive Ni4Mo formation, so the mill certificate governs final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 26.0–30.0% |
| Iron (Fe) | 2.0% max. |
| Chromium (Cr) | 1.0% max. |
| Cobalt (Co) | 1.00% max. |
| Manganese (Mn) | 1.0% max. |
| Carbon (C) | 0.02% max. |
| Silicon (Si) | 0.10% max. |
| Phosphorus (P) | 0.04% max. |
| Sulfur (S) | 0.03% max. |
Mechanical Properties
Because ASTM B335 sets one solution-annealed state for rod, its minimums apply across the whole 7.94 to 88.9 mm range. Besides, that document writes its mechanical table without a hardness ceiling against UNS N10665.
| Condition | Tensile Strength | Yield Strength, 0.2% Offset | Elongation | Hardness |
|---|---|---|---|---|
| Rod — ASTM B335, solution annealed | ≥760 MPa (110 ksi) | ≥350 MPa (51 ksi) | 40% | No requirement in the standard |
The grade is not age hardenable, so strength above those floors comes from cold work alone. Besides, a 100 HRB figure that turns up on a mill certificate is informative rather than an acceptance limit, because Table 2 sets no ceiling for N10665. Sections above 88.9 mm pass to the forging route under ASTM B564, and we confirm those minimums on the order.
Physical Properties
As a Hastelloy B-2 bar supplier, we publish the room-temperature values below for design work rather than for acceptance testing. In addition, the alloy stays non-magnetic in the annealed condition.
| Property | Value |
|---|---|
| Density | Approx. 9.22 g/cm³ |
| Melting range | Approx. 1330–1380 °C |
| Modulus of elasticity | Approx. 217 GPa |
| Thermal conductivity at 0 °C | Approx. 11.1 W/m·K |
| Thermal conductivity at 100 °C | Approx. 12.2 W/m·K |
| Specific heat at 100 °C | Approx. 389 J/kg·K |
| Electrical resistivity at 20 °C | Approx. 1.37 µΩ·m |
| Thermal expansion, 20–93 °C | Approx. 10.3 µm/m·K |
| Magnetic behaviour | Non-magnetic in the annealed condition |
| Strengthening route | Cold work only |
Standards
ASTM B335 covers rod, and the ASME edition takes over wherever pressure equipment applies. Specifically, that document reaches from 7.94 to 88.9 mm, and no ASTM bar standard runs beyond it. Meanwhile, the designations below identify the same melt.
| Standard / Designation | Scope |
|---|---|
| ASTM B335 / ASME SB335 | Nickel-molybdenum alloy rod, 7.94–88.9 mm — UNS N10665 in the scope table |
| ASTM B564 / ASME SB564 | Forgings and forged bar beyond the rod range; the Ni-Mo row lists N10665 |
| ASTM B333 / ASME SB333 | Plate, sheet and strip in the same grade |
| ASTM B622 / ASME SB622 | Seamless pipe and tube |
| ASTM B619 / ASME SB619 | Welded pipe |
| ASTM B626 / ASME SB626 | Welded tube |
| ASTM B366 / ASME SB366 | Factory-made wrought fittings |
| ASTM B462 | Forged or rolled flanges and forged fittings |
| DIN 17752 / 17753 / 17754 | Bar, wire and forging stock under the German series |
| ISO 9723 / 9724 / 9725 | Nickel alloy bar, wire and forgings |
| UNS N10665 | Unified Numbering System designation |
| W.Nr. 2.4617 / NiMo28 | European designation for Alloy B-2 |
| GB/T 15007 NS322 | Chinese designation |
| SAE AMS | No aerospace specification covers this grade in any product form |
The rod document comes from ASTM International, and its text settles any acceptance question.
Dimensions
As a Hastelloy B-2 bar supplier, we keep the sizes below inside the window the rod specification defines. Consequently, anything beyond 88.9 mm moves to the forging document, and we say so at quotation.
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 7.94–88.9 mm dia., solution annealed to ASTM B335 | Cut to length or random |
| Bright Bar | 7.94–88.9 mm dia., drawn or peeled | Cut to length |
| Centreless-Ground Rod | 7.94–88.9 mm dia., tight tolerance | Cut to length |
| Hex Bar | 8–100 mm across flats, agreed on the drawing | Cut to length or random |
| Forged Bar | Above 88.9 mm dia. or shaped section, to ASTM B564 | Cut to length |
| Welding Wire | ERNiMo-7 bare wire from 0.8 mm dia. | Spools, coils or cut lengths |
Surface Finishes
As a Hastelloy B-2 bar supplier, we set the finish by the next operation rather than by a catalogue default. In short, we agree it with the order so the surface suits the machining you have planned.
| Surface Condition | Typical Use |
|---|---|
| Solution annealed and pickled | Standard delivery for hydrochloric acid and acid-regeneration service |
| Hot-worked | 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 |
| Centreless ground | Tight diameter and straightness for shafting |
| Bright annealed | Instrument and vacuum components that need a clean, oxide-free skin |
| 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 carries your B-2 order from enquiry to shipment. Moreover, we settle the acid duty and the heat-treatment route before any bar is cut.
1
Send the Duty and Sizes
Give the medium, its concentration, the diameter and the quantity you need.
2
Confirm the Condition
Agree solution-annealed, cold-drawn or forged against your machining route.
3
Review the Offer
Price, lead time and the certificate set arrive in one reply.
4
Approve the Specification
Grade, size, inspection level and delivery terms go on record before cutting.
5
Produce and Test
We melt, anneal, quench and test the heat to the ordered condition.
6
Release and Pack
Certificates and export papers travel with the bar under the agreed terms.
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?
As a Hastelloy B-2 bar supplier, we work to ASTM B335 / ASME SB335 for sizes from 7.94 to 88.9 mm.
Can Hastelloy B-2 bar handle hydrochloric acid?
Yes, at every concentration up to boiling, as long as no oxidant enters the stream.
Which contaminants rule out Hastelloy B-2?
Ferric ions, cupric ions, nitric acid and hypochlorite. Each one oxidises the surface of this Hastelloy B-2 bar, so those duties belong with a chromium-bearing grade.
Is Hastelloy B-2 bar approved for sour service?
No. A high-nickel, low-chromium melt forms nickel sulphide in H2S, so we route sour wells to the chromium-bearing C family.
Which filler metal suits Hastelloy B-2 welding?
GTAW with ERNiMo-7 wire (AWS A5.14) or ENiMo-7 electrodes (AWS A5.11) covers most joints.
Why must mid-temperature annealing be avoided?
Ni4Mo orders between 540 and 815 °C, and the embrittlement it causes cannot be reversed.
What is your MOQ for Hastelloy B-2 bar?
One bar covers most stock diameters.
What are your trade terms for Hastelloy B-2 bar?
FOB is our default, and we quote EXW or CIF when you name the port.
What is the lead time for Hastelloy B-2 bar?
Stock diameters leave in 7–15 days, and made-to-order annealed bar needs about 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. 3.1 mill certificates ship with every lot, and 3.2 with third-party witness comes on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the medium, its concentration, the diameter and the quantity. As a Hastelloy B-2 bar supplier, we reply with price, lead time and the certificate set. Because we confirm the heat-treatment route before melting, nothing shifts after approval.
Trial bars are welcome, and a single piece of most stock diameters proves the finish before a plant-wide order.
