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Incoloy 825 Cold-Drawn Hex Bar
Drawn hexagons with a close across-flats band for sour-service nut blanks.
Request Availability →Incoloy 825 Hex Bar
Incoloy 825 hex bar to ASTM B425, sized across flats for sour-service nuts and acid-plant bolting.
One B425 Grade, One UNS
Every heat of this Incoloy 825 hex bar reads N08825, with molybdenum and copper reported on the certificate.
Hardness Records for Sour Duty
Moreover, NACE MR0175 orders for this Incoloy 825 hex bar carry hardness data keyed to each heat.
Anneal Range on the Record
Furthermore, the release papers record the 927–1010 °C anneal actually used for this Incoloy 825 hex bar.
PRODUCT OVERVIEW
About Incoloy 825 Hex Bar
Incoloy 825 hex bar arrives in UNS N08825, the titanium-stabilised nickel-iron-chromium grade whose molybdenum and copper additions face reducing and oxidising acids. Seawater, brine and H2S-bearing streams also sit inside the envelope of this Incoloy 825 hex bar.
We supply Incoloy 825 hex bar to ASTM B425 and ASME SB425 in hot-worked, solution-annealed and cold-drawn conditions. Your order for this 825 hex bar carries heat-number records, hardness papers where sour duty calls for them and EN 10204 3.1 paperwork for goods-in checks. Besides, we agree the anneal and finish on the hex bar before we book the heat.
Meanwhile, the chemistry and the sour-service data behind Incoloy 825 hex bar sit on our Incoloy 825 material page for cross-reference.
PRODUCT FEATURES
Key Features of Incoloy 825 Hex Bar
Incoloy 825 hex bar arrives in UNS N08825, the titanium-stabilised nickel-iron-chromium grade whose molybdenum and copper additions face reducing and oxidising acids. We provide ASTM B425 hex bar sized across flats in hot-worked and annealed conditions for acid plants, sour-service projects and seawater-cooled equipment. Every Incoloy 825 hex bar order carries heat-number traceability, EN 10204 3.1 mill test reports and full export documentation.
Incoloy 825
Sulfuric and Phosphoric Acid Resistance
For example, molybdenum and copper in this Incoloy 825 hex bar cover reducing acid streams across a wide band.
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Chloride SCC Resistance
Specifically, nickel at 38.0–46.0% keeps this Incoloy 825 hex bar austenitic against chloride stress-corrosion cracking.
02
NACE Sour Qualification
Moreover, UNS N08825 sits inside NACE MR0175 / ISO 15156, so this Incoloy 825 hex bar enters H2S duty with a hardness record.
03
Titanium-Stabilised Structure
Besides, titanium ties up carbon in this Incoloy 825 hex bar, so sensitization does not follow welding.
04
Pitting and Crevice Resistance
In turn, molybdenum lifts the localised corrosion resistance of this Incoloy 825 hex bar in seawater.
05
Cold-Work Strength
Drawing adds yield strength above the annealed floor of this Incoloy 825 hex bar where shafts need it.
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Weldable Without Post-Weld Heat Treatment
Standard arc practice on this Incoloy 825 hex bar clears most fabrications without any furnace pass.
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Non-Magnetic Behaviour
Finally, this Incoloy 825 hex bar stays non-magnetic below −196 °C for magnetically sensitive assemblies.
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WHY CHOOSE US
Why Choose Incoloy 825
Nut blanks and sour-service bolting turn on across-flats accuracy in Incoloy 825 hex bar. In addition, we settle the across-flats size and the hardness ceiling of this 825 hex bar before pricing.
01
Duty Read Before Pricing
We record the medium, concentration and temperature your Incoloy 825 hex bar will meet before proposing a delivery condition.
02
Certificates Tied to the Heat
Specifically, EN 10204 3.1 papers, heat numbers and hardness records follow each Incoloy 825 hex bar delivery.
03
Trial Pieces and Container Lots
In addition, this Incoloy 825 hex bar flows through one route whether you order one length or a container lot.
04
Terms Stated in Writing
Quotations for this Incoloy 825 hex bar name the medium, section, finish and document set instead of leaving them open.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Bar production for Incoloy 825 hex bar runs from charge weighing to final packing. Our team logs each stage of this 825 hex bar route against its heat number.
01
Charge Weighing
We charge electrolytic nickel, chromium, iron, molybdenum and copper, then hold this 825 hex bar to the B425 impurity caps.
02
Melting and Refining
First, the charge for this Incoloy 825 hex bar melts and refines under AOD practice that holds carbon low.
03
Titanium Stabilisation
Next, titanium joins the melt of this Incoloy 825 hex bar so carbon stays tied up against intergranular attack.
04
Hot Reduction
Then, forging and rolling reduce the ingot to this Incoloy 825 hex bar section.
05
Solution Annealing
After that, 927–1010 °C annealing and rapid cooling restore the corrosion resistance of this Incoloy 825 hex bar.
06
Pickling and Descale
Subsequently, acid pickling leaves this Incoloy 825 hex bar scale-free for fabrication.
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Cold Finishing
We then draw, turn or grind this Incoloy 825 hex bar to the ordered size and finish.
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Testing and Release
Finally, chemistry, hardness and dimensional checks clear this Incoloy 825 hex bar for dispatch.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Stock lots and made-to-order lengths of Incoloy 825 hex bar leave on one schedule. Moreover, this Incoloy 825 hex bar sits inside our bar and rod program.
20,000+ m²
Factory Area
Melting, forging, annealing and pickling bays serve Incoloy 825 hex bar under one roof.
50+
Production Machines
Units covering hot working, annealing, drawing and pickling for this Incoloy 825 hex bar.
600 Tons
Monthly Capacity
Incoloy 825 hex bar output across stock and bespoke lots.
30+
Technical Engineers
Metallurgists who set the anneal plan and hardness scope of this Incoloy 825 hex bar against your duty.
30+ Countries
Export Reach
In addition, sealed export packing carries this Incoloy 825 hex bar worldwide.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
No Incoloy 825 hex bar leaves the yard before its heat has cleared our ISO 9001 inspection route. In addition, we check this 825 hex bar against the chemistry, hardness, dimensions and surface the order names.
01
Heat Identification
We confirm the grade and heat number of this Incoloy 825 hex bar against your purchase order.
02
Hardness Verification
Specifically, sour-service lots of this Incoloy 825 hex bar go against the 35 HRC ceiling per NACE MR0175.
03
Dimensional Verification
In addition, the diameter, length and runout of this Incoloy 825 hex bar go against the ordered tolerance class.
04
Certificate Assembly
Every consignment of this Incoloy 825 hex bar ships with EN 10204 3.1 papers keyed to its heat.
PRODUCT FORMS
Available Product Forms
Conditions and variants of Incoloy 825 hex bar cover different machining and service needs. In addition, the list below sets out the Incoloy 825 Hex Bar variants we quote most often.
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Incoloy 825 Hot-Worked Hex Bar
As-rolled hexagons for components that will be machined all over.
Request Availability →
03
Incoloy 825 Annealed and Pickled Hex Bar
Hexagons annealed and pickled for direct acid-plant use.
Request Availability →
04
Incoloy 825 Bright Hex Bar
Bright hexagons with clean flats for visible fastener work.
Request Availability →
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Incoloy 825 Peeled Hex Bar
Peeled hexagons with controlled flats ready for machining.
Request Availability →
06
Incoloy 825 Custom Hex Bar
Custom across-flats sizes produced against your callout.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Incoloy 825 hex bar suits duty where acid attack and chloride cracking meet one component. In addition, the applications below show where this 825 hex bar serves.
Discuss Your Application →
01
Incoloy 825 Sour-Service Nut Blanks
Hexagon stock feeding nuts for H2S-bearing flanges.
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Incoloy 825 Acid Plant Flange Fasteners
Fasteners closing flanges on sulfuric distribution lines.
03
Incoloy 825 Seawater Cooler Bolting
Bolting closing channel heads on seawater exchangers.
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Incoloy 825 Scrubber Duct Clips
Clip stock clamping scrubber duct sections together.
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Incoloy 825 Phosphoric Pump Base Nuts
Nuts securing pump bases in wet-process acid plants.
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Incoloy 825 Pickling Crane Hardware
Hardware on cranes working above acid pickling lines.
07
Incoloy 825 Brine Circuit Adjusting Nuts
Nuts adjusting spring loads on brine heat exchangers.
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Incoloy 825 Acid-Line Instrument Stem Nuts
Nuts adjusting valves and instruments on acid lines.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
ASTM B425 holds nickel between 38.0% and 46.0% and chromium between 19.5% and 23.5% for this hex bar, with iron at 22.0% minimum. Moreover, molybdenum at 2.5–3.5% and copper at 1.5–3.0% form the acid-resisting pair behind this hex bar, while titanium at 0.6–1.2% stabilises the structure against intergranular attack.
For the complete element-by-element limits, open the composition breakdown held on the Incoloy 825 material page for this hex bar.
Mechanical Properties
The minimum room-temperature values below follow the rod and bar table of ASTM B425 for UNS N08825. Consequently, the ordered condition and hardness basis govern final acceptance of Incoloy 825 hex bar.
| Condition and Grade | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. |
|---|---|---|---|
| Annealed — UNS N08825 | ≥85 ksi (586 MPa) | ≥35 ksi (241 MPa) | 30% |
- ASTM B425 sets one annealed condition for rod and bar, with the yield minimum applying from 2.4 mm diameter upward and hardness at 200 HB maximum. Moreover, strength above the annealed floor comes from cold work only, because UNS N08825 does not respond to aging, so sour-service orders carry a hardness record against the 35 HRC ceiling.
Physical Properties
Published references place this hex bar at a density near 8.14 g/cm³ with a melting range of 1370–1400 °C. Moreover, the Curie temperature sits below −196 °C, so this hex bar stays non-magnetic even in cryogenic seawater service. Besides, the austenitic matrix keeps these values stable across the whole annealed range.
Meanwhile, the physical properties table on the Incoloy 825 material page holds the modulus, the thermal expansion and the remaining design values behind this hex bar.
Heat Treatment
The solution anneal is the specification-defining step for this grade, because rapid cooling after 927–1010 °C restores the corrosion resistance the media demand. In addition, we supply this Incoloy 825 hex bar in whichever condition your duty calls for.
| Condition | Typical Treatment |
|---|---|
| Solution Annealed | Held at 927–1010 °C (1700–1850 °F), then cooled rapidly to restore full corrosion resistance |
| Hot-Worked | Delivered as-rolled or as-forged, with the solution anneal agreed where the order calls for it |
| Cold-Drawn | Drawn after annealing, with the reduction recorded so the higher yield strength is documented |
| Sour-Service Release | NACE MR0175 orders carry a per-lot hardness record against the 35 HRC ceiling |
Standards
ASTM B425 is the principal rod and bar document for this hex bar, published by ASTM International, and its scope names UNS N08825 alone. Moreover, ASME SB425 covers pressure equipment while VdTÜV 432 serves German vessel work. Besides, DIN 17752, BS 3076 NA16 and ISO 9723 serve European, British and international orders for this hex bar.
| Standard | Product or Application |
|---|---|
| ASTM B425 / ASME SB425 | Nickel-iron-chromium-molybdenum-copper rod and bar, UNS N08825 |
| DIN 17752 / BS 3076 NA16 | European and British bar documents |
| VdTÜV 432 / ISO 9723 | German data sheet and international bar document |
Finally, the full standards list on the Incoloy 825 material page adds the pressure documents, the European designations and the remaining product documents behind this hex bar.
Dimensions
Dimensions of Incoloy 825 hex bar follow the manufacturing route, the document and the order quantity. Therefore, the table below lists typical supply ranges, so please confirm your sizes in the inquiry.
| Product Form | Typical Supply | Length |
|---|---|---|
| Hex Bar | 10–150 mm A/F | Cut to length or random |
| Cold-Drawn Hex Bar | 10–80 mm A/F | Cut to length |
| Hot-Worked Hex Bar | 20–150 mm A/F | Cut to length or random |
| Annealed Hex Bar | 10–150 mm A/F | Cut to length |
| Bright Hex Bar | 10–100 mm A/F | Cut to length or random |
| Peeled Hex Bar | 20–100 mm A/F | Cut to length |
| Custom Hex Bar | To drawing | Custom |
Available sizes of this Incoloy 825 hex bar depend on route, document, condition and lot size. Please confirm your required hex bar size, section and length in the inquiry.
Surface Finishes
Finish decides how this hex bar behaves across acid plants, seawater circuits and sour-service skids, and most stock ships annealed and pickled so the stabilised surface reaches your shop intact. Specifically, we fix the finish on this Incoloy 825 hex bar before the order is released.
| Surface Condition | Typical Use |
|---|---|
| Cold Drawn | Drawn stock giving this hex bar close diameter control and a smooth bright skin. |
| Peeled | A machined skin on this hex bar with uniform diameter for acid-plant shaft work. |
| Annealed and Pickled | Annealing followed by acid descaling leaves this hex bar scale-free for sulfuric and seawater duty. |
Meanwhile, the surface finishes table on the Incoloy 825 material page lists the remaining conditions we quote for this hex bar.
Related forms from the same heat cover Incoloy 825 Round Bar, Incoloy 825 Round Rod and Incoloy 825 Square Bar when your hex bar order needs them.
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 Incoloy 825 hex bar order from first question to loading. Therefore, most orders for this 825 hex bar travel from quotation to dispatch inside three weeks.
1
Send the Medium Data
Give the medium, concentration, temperature, size, quantity and standard this Incoloy 825 hex bar will face.
2
Fix the Condition
Then we set the anneal, hardness basis and tolerance for this Incoloy 825 hex bar.
3
Review the Offer
Receive pricing for this Incoloy 825 hex bar by size, quantity and destination port.
4
Approve the Order
Approve the specification, terms and schedule of this Incoloy 825 hex bar in writing.
5
Witness Points Agreed
We book any third-party inspection or hardness review of this Incoloy 825 hex bar before production starts.
6
Dispatch and Documents
Receive this Incoloy 825 hex bar with mill papers, packing list and the certificate set.
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 standard covers this Incoloy 825 hex bar?
ASTM B425 and ASME SB425 govern this Incoloy 825 hex bar, and the B425 scope names UNS N08825 alone for round, square, hex and rectangular sections.
Is this Incoloy 825 hex bar suitable for sulfuric acid duty?
Yes. Molybdenum and copper give this Incoloy 825 hex bar its resistance across a wide band of sulfuric concentrations, subject to your stream temperature.
Does this Incoloy 825 hex bar qualify for sour service?
Yes. NACE MR0175 / ISO 15156 lists UNS N08825, and we record hardness per heat against the 35 HRC ceiling.
Which anneal does this Incoloy 825 hex bar receive?
Solution annealing runs at 927–1010 °C with rapid cooling, and the release papers name the temperature actually used on your lot.
How is the price of this Incoloy 825 hex bar calculated?
Pricing follows weight for this Incoloy 825 hex bar, with the nickel, molybdenum and copper quotations fixed on the date you receive the offer.
What is your MOQ for this Incoloy 825 hex bar?
A single bar covers many common sizes of this Incoloy 825 hex bar, so trial lengths are welcome before container orders.
What are your trade terms for this Incoloy 825 hex bar?
Quotations default to FOB for this Incoloy 825 hex bar, and EXW or CIF terms are quoted when you ask for them.
What is the lead time for this Incoloy 825 hex bar?
Stock sizes of this Incoloy 825 hex bar dispatch in 7 to 15 days, while made-to-order annealed heats need about 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates for this Incoloy 825 hex bar?
Yes. Every heat of this Incoloy 825 hex bar ships with 3.1, and a 3.2 endorsement is booked through the order.
What information should an enquiry for this Incoloy 825 hex bar include?
Please send the medium, concentration, temperature, section, quantity and destination so we can quote this Incoloy 825 hex bar accurately.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Our Incoloy 825 hex bar offer names the across-flats size, delivery condition and hardness basis to ASTM B425. Send the A/F size and quantity to receive pricing for this 825 hex bar.
Specifically, we review your Incoloy 825 hex bar specification, confirm the hardness basis and document scope, and return pricing with clear terms. Production then follows the signed specification, and each consignment of this Incoloy 825 hex bar ships with the complete paper set.
