01
Incoloy 800/800H/800HT Cold-Drawn Hex Bar
Drawn hexagons with a tight across-flats tolerance for nut blanks.
Request Availability →Incoloy 800 / 800H / 800HT Hex Bar
Incoloy 800/800H/800HT hex bar to ASTM B408, sized across flats for high-temperature nut blanks and furnace bolting.
One B408 Table, Three Designations
Carbon and the Al+Ti total decide whether this Incoloy 800/800H/800HT hex bar ships as N08800, N08810 or N08811.
Coarse-Grain Heats Verified
Moreover, every 800H and 800HT hex bar lot carries an E112 grain-size record of ASTM 5 or coarser.
Creep Design Above 593 °C
Furthermore, we name the ASME code cases behind this Incoloy 800/800H/800HT hex bar so your design basis arrives with the price.
PRODUCT OVERVIEW
About Incoloy 800 / 800H / 800HT Hex Bar
Incoloy 800 / 800H / 800HT hex bar arrives in the iron-nickel-chromium family whose design divide sits at 593 °C. Above 593 °C, 800H and 800HT stock of this Incoloy 800/800H/800HT hex bar holds creep strength far longer under load.
We supply Incoloy 800/800H/800HT hex bar to ASTM B408 and ASME SB408 in hot-worked, solution-annealed and cold-drawn conditions. Your order for this 800 series hex bar carries heat-number records and EN 10204 3.1 paperwork for goods-in checks. Besides, the designation, anneal and finish on the hex bar are agreed before the heat is booked.
Meanwhile, the chemistry and the design values behind Incoloy 800/800H/800HT hex bar sit on our Incoloy 800/800H/800HT material page for cross-reference.
PRODUCT FEATURES
Key Features of Incoloy 800 / 800H / 800HT Hex Bar
Incoloy 800/800H/800HT hex bar arrives in UNS N08800, N08810 and N08811, the iron-nickel-chromium family whose design divide sits at 593 °C. We provide ASTM B408 hex bar sized across flats in hot-worked and annealed conditions for furnace builders, reformer fabricators and heat-treatment shops. Every Incoloy 800/800H/800HT hex bar order carries heat-number traceability, EN 10204 3.1 mill test reports and full export documentation.
Incoloy 800 / 800H / 800HT
593 °C Design Divide
For example, this Incoloy 800/800H/800HT hex bar moves to 800H or 800HT above the line where creep takes over.
01
Coarse Grain Verified
Specifically, 800H and 800HT stock of this Incoloy 800/800H/800HT hex bar carries an E112 grain-size record per lot.
02
Oxidation and Carburization Resistance
Besides, the chromium-rich scale on this Incoloy 800/800H/800HT hex bar regenerates in hot oxidizing and carburizing gas.
03
Chloride SCC Resistance
In turn, 30–35% nickel keeps this Incoloy 800/800H/800HT hex bar austenitic against chloride cracking.
04
ASME Code Case Coverage
Moreover, design allowables for this Incoloy 800/800H/800HT hex bar above 593 °C follow ASME Code Cases 1325, 1983 and 1987.
05
Weldable Without Post-Weld Heat Treatment
Standard arc practice on this Incoloy 800/800H/800HT hex bar releases most fabrications without a furnace cycle.
06
Higher Grade-800 Strength
The finer annealed grain of grade 800 gives this Incoloy 800/800H/800HT hex bar the top room-temperature minimums of the family.
07
Sensitization Band Managed
Finally, we route heavy welded sections of this Incoloy 800/800H/800HT hex bar around the 425–815 °C band.
08
WHY CHOOSE US
Why Choose Incoloy 800 / 800H / 800HT
Nut blanks and furnace bolting turn on across-flats accuracy in Incoloy 800/800H/800HT hex bar. In addition, we settle the across-flats size and the anneal route of this 800 series hex bar before pricing.
01
Duty Read Before Pricing
We record the temperature, the atmosphere and the designation your Incoloy 800/800H/800HT hex bar will meet before proposing a delivery condition.
02
Certificates Tied to the Heat
Specifically, EN 10204 3.1 papers, heat numbers and E112 grain records follow each Incoloy 800/800H/800HT hex bar delivery.
03
Trial Pieces and Container Lots
In addition, this Incoloy 800/800H/800HT hex bar moves through one route whether you need a single length or a full container.
04
Terms Stated in Writing
Quotations for this Incoloy 800/800H/800HT hex bar name the designation, section, finish and document set instead of leaving them open.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Bar production for Incoloy 800/800H/800HT hex bar runs from charge weighing to final packing. Our team logs each stage of this 800 series hex bar route against its heat number.
01
Charge Weighing
We charge electrolytic nickel, chromium and iron, then hold this 800 series hex bar to the B408 impurity caps.
02
Melting and Refining
First, the charge for this Incoloy 800/800H/800HT hex bar melts and refines under controlled practice.
03
Ingot Casting
Next, this Incoloy 800/800H/800HT hex bar casts into ingots under controlled solidification.
04
Hot Reduction
Then, forging and rolling reduce the ingot to this Incoloy 800/800H/800HT hex bar section.
05
Solution Annealing
After that, 800H heats of this Incoloy 800/800H/800HT hex bar anneal at 1121 °C minimum, and 800HT heats at 1149 °C minimum, to set the coarse grain.
06
Grain-Size Verification
Subsequently, an E112 check confirms ASTM 5 or coarser grain on the 800H and 800HT lots of this Incoloy 800/800H/800HT hex bar.
07
Cold Finishing
We then draw, turn or grind this Incoloy 800/800H/800HT hex bar to the ordered size and finish.
08
Testing and Release
Finally, chemistry, mechanical and dimensional checks clear this Incoloy 800/800H/800HT hex bar for dispatch.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Stock lengths and made-to-order lots of Incoloy 800/800H/800HT hex bar leave on one schedule. Moreover, this Incoloy 800/800H/800HT hex bar sits inside our bar and rod program.
20,000+ m²
Factory Area
Specifically, melting, forging, annealing and inspection halls serve Incoloy 800/800H/800HT hex bar under one roof.
50+
Production Machines
Equipment covering hot working, solution annealing and cold finishing for this Incoloy 800/800H/800HT hex bar.
600 Tons
Monthly Capacity
Incoloy 800/800H/800HT hex bar output across stock and made-to-order sizes.
30+
Technical Engineers
Metallurgists who set the anneal plan and document scope of this Incoloy 800/800H/800HT hex bar against your duty.
30+ Countries
Export Reach
In addition, documented logistics carry this Incoloy 800/800H/800HT hex bar worldwide.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
No Incoloy 800/800H/800HT hex bar leaves the yard before its heat has cleared our ISO 9001 inspection route. In addition, we check this 800 series hex bar against the chemistry, grain size, dimensions and surface the order names.
01
Heat Identification
We confirm the designation and heat number of this Incoloy 800/800H/800HT hex bar against your purchase order.
02
Grain-Size Verification
Specifically, 800H and 800HT stock of this Incoloy 800/800H/800HT hex bar goes against ASTM 5 or coarser per E112.
03
Dimensional Verification
In addition, the size, length and straightness of this Incoloy 800/800H/800HT hex bar go against standard and drawing tolerances.
04
Certificate Assembly
Every consignment of this Incoloy 800/800H/800HT hex bar carries EN 10204 3.1 documents keyed to the heat number.
PRODUCT FORMS
Available Product Forms
Conditions and variants of Incoloy 800/800H/800HT hex bar cover different machining and service needs. In addition, the list below sets out the Incoloy 800/800H/800HT Hex Bar variants we quote most often.
02
Incoloy 800/800H/800HT Hot-Worked Hex Bar
As-rolled hexagons for parts that will be machined all over.
Request Availability →
03
Incoloy 800/800H/800HT Annealed Hex Bar (800H)
Hexagons annealed to the coarse-grain 800H requirement.
Request Availability →
04
Incoloy 800/800H/800HT Bright Hex Bar
Bright hexagons with clean faces for visible fastener work.
Request Availability →
05
Incoloy 800/800H/800HT Peeled Hex Bar
Peeled hexagons with controlled flats for machining.
Request Availability →
06
Incoloy 800/800H/800HT Custom Hex Bar
Custom across-flats sizes produced to your callout.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Incoloy 800/800H/800HT hex bar is chosen where heavy load and hot atmosphere meet in one component. In addition, the applications below show where this 800 series hex bar serves.
Discuss Your Application →
01
Incoloy 800/800H/800HT High-Temperature Nut Blanks
Hexagon stock feeding nuts for furnace and reformer flanges.
02
Incoloy 800/800H/800HT Furnace Door Bolting
Bolting closing furnace doors through daily thermal cycles.
03
Incoloy 800/800H/800HT Burner Assembly Nuts
Nuts securing burner hardware in hot decks.
04
Incoloy 800/800H/800HT Expansion Joint Anchors
Anchor nuts holding hot duct expansion joints.
05
Incoloy 800/800H/800HT Reformer Flange Fasteners
Fasteners for reformer header flanges above 593 °C.
06
Incoloy 800/800H/800HT Heat-Exchanger Channel Nuts
Nuts closing channel heads on hot exchangers.
07
Incoloy 800/800H/800HT Soaking Pit Cover Clips
Clip stock clamping soaking pit covers.
08
Incoloy 800/800H/800HT Instrument Stem Nuts
Nuts adjusting valves and instruments on hot lines.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
ASTM B408 holds nickel between 30.0% and 35.0% and chromium between 19.0% and 23.0% for this hex bar, with iron as the balance of the melt. Moreover, the carbon window and the Al+Ti total decide whether a heat reads N08800, N08810 or N08811. Besides, all three designations sit on one and the same B408 composition table.
For the full three-column element set, open the composition breakdown held on the Incoloy 800/800H/800HT material page for this hex bar.
Mechanical Properties
The minimum room-temperature values below follow the rod and bar table of ASTM B408, split by delivery condition and designation. Consequently, condition and designation govern final acceptance of Incoloy 800/800H/800HT hex bar.
| Condition and Grade | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. |
|---|---|---|---|
| Hot-worked, as-hot-worked — UNS N08800 | ≥80 ksi (550 MPa) | ≥35 ksi (240 MPa) | 25% |
| Cold-worked and hot-worked, annealed — UNS N08800 | ≥75 ksi (515 MPa) | ≥30 ksi (205 MPa) | 30% |
| Annealed — UNS N08810 / N08811 | ≥65 ksi (450 MPa) | ≥25 ksi (170 MPa) | 30% |
- Grade 800 keeps the higher room-temperature minimums because its anneal sets a finer grain, while 800H and 800HT trade part of that strength for the coarse grain their creep design needs, so the ordered designation and condition govern final acceptance.
Physical Properties
Published references place this hex bar at a density near 7.94 g/cm³ with a melting range of 1357–1385 °C. Moreover, the Curie temperature sits near −115 °C, so this hex bar stays non-magnetic in service. Besides, the austenitic matrix keeps these values stable across all three designations.
Meanwhile, the physical properties table on the Incoloy 800/800H/800HT material page holds the modulus, the thermal expansion and the remaining design values behind this hex bar.
Heat Treatment
The anneal is the specification-defining step for this family, because the grain it sets decides the creep life of the part. In addition, we supply this Incoloy 800/800H/800HT hex bar in whichever condition your duty calls for.
| Condition | Typical Treatment |
|---|---|
| Solution Annealed (800H) | Held at 1121 °C (2050 °F) minimum, then cooled to set ASTM 5 or coarser grain |
| Solution Annealed (800HT) | Held at 1149 °C (2100 °F) minimum for the 0.85–1.20% Al+Ti window |
| Grade 800 Anneal | Annealed without a grain-size requirement, keeping the higher room-temperature strength |
| Stress Relieved | A low-temperature relief that holds straightness without dwelling in the 425–815 °C sensitization band |
Standards
ASTM B408 is the principal rod and bar document for this hex bar, published by ASTM International, and its scope runs across five UNS numbers rather than the 800 series alone. Moreover, ASME SB408 covers pressure equipment, while SAE AMS 5766 reaches only the grade 800 chemistry. Besides, DIN 17752 and BS 3076 NA15 serve European and British orders for this hex bar.
| Standard | Product or Application |
|---|---|
| ASTM B408 | Nickel-iron-chromium rod and bar, UNS N08800, N08810, N08811 |
| ASME SB408 | ASME counterpart for pressure equipment |
| DIN 17752 / BS 3076 NA15 | European and British bar documents |
Finally, the full standards list on the Incoloy 800/800H/800HT material page adds the ASME code cases, the European designations and the remaining product documents behind this hex bar.
Dimensions
Dimensions of Incoloy 800/800H/800HT hex bar follow the manufacturing route, the standard and the order quantity. Therefore, the table below lists typical supply ranges, so please confirm your size 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 (800H) | 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 800/800H/800HT hex bar depend on the manufacturing route, the standard, the material condition and the order quantity. Please confirm your required hex bar size, section and length in the inquiry.
Surface Finishes
Finish decides how this hex bar scales, machines and clears your incoming checks, and 800H and 800HT normally ship solution annealed so the coarse grain survives to the end of the route. Specifically, we fix the finish on this Incoloy 800/800H/800HT 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 the following turning pass. |
| Rough Turned | A turned surface on this hex bar where the finishing cut is left to your shop. |
Meanwhile, the surface finishes table on the Incoloy 800/800H/800HT material page lists the remaining conditions we quote for this hex bar.
Related forms from the same heat cover Incoloy 800/800H/800HT Round Bar, Incoloy 800/800H/800HT Round Rod and Incoloy 800/800H/800HT 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 800/800H/800HT hex bar order from first question to loading. Therefore, most orders for this 800 series hex bar move from quotation to dispatch inside three weeks.
1
Send the Duty Data
Give the designation, size, quantity, standard and the temperature your Incoloy 800/800H/800HT hex bar will see.
2
Fix the Condition
Then we set the anneal, grain-size requirement and tolerance for this Incoloy 800/800H/800HT hex bar.
3
Review the Offer
Receive pricing for this Incoloy 800/800H/800HT hex bar by dimension, quantity and destination port.
4
Approve the Order
Approve the specification, terms and schedule for this Incoloy 800/800H/800HT hex bar in writing.
5
Witness Points Agreed
Any third-party inspection or grain-size review of this Incoloy 800/800H/800HT hex bar is booked before production starts.
6
Dispatch and Documents
Receive this Incoloy 800/800H/800HT hex bar with the mill certificate, packing list and shipping papers.
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 800/800H/800HT hex bar?
ASTM B408 and ASME SB408 govern this Incoloy 800/800H/800HT hex bar across the three designations for round, square, hex and rectangular sections.
Which designation should I order for service above 593 °C?
ASTM B408 names 1100 °F (593 °C) as the ceiling for normal service of UNS N08800, so creep-governed duty above that line moves to 800H or 800HT for this Incoloy 800/800H/800HT hex bar.
What does the coarse-grain requirement change on this Incoloy 800/800H/800HT hex bar?
The 800H and 800HT anneals set ASTM 5 or coarser grain, so this Incoloy 800/800H/800HT hex bar ships with an E112 record rather than a fine annealed structure.
Does AMS 5766 cover all three designations?
No. AMS 5766 reaches bars, forgings and forging stock of the grade 800 chemistry only, so 800H and 800HT orders for this Incoloy 800/800H/800HT hex bar follow the ASTM and European documents.
How is the price of this Incoloy 800/800H/800HT hex bar calculated?
Pricing follows weight for this Incoloy 800/800H/800HT hex bar, with the nickel and chromium quotations fixed on the date you receive the offer.
What is your MOQ for this Incoloy 800/800H/800HT hex bar?
A single piece covers many common sizes of this Incoloy 800/800H/800HT hex bar.
What are your trade terms for this Incoloy 800/800H/800HT hex bar?
FOB covers most orders for this Incoloy 800/800H/800HT hex bar, and EXW or CIF terms are available when you ask.
What is the lead time for this Incoloy 800/800H/800HT hex bar?
Stock sizes of this Incoloy 800/800H/800HT hex bar dispatch in 7 to 15 days, while grain-controlled 800H and 800HT heats need about 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates for this Incoloy 800/800H/800HT hex bar?
Yes. Every heat of this Incoloy 800/800H/800HT hex bar ships with 3.1, and a 3.2 endorsement is booked through the order.
What information should an enquiry for this Incoloy 800/800H/800HT hex bar include?
Please send the designation, section, diameter, length, delivery condition, finish, quantity and destination so we can quote this Incoloy 800/800H/800HT hex bar accurately.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Our Incoloy 800/800H/800HT hex bar offer names the across-flats size, delivery condition and tolerance to ASTM B408. Send the A/F size and quantity to receive pricing for this 800 series hex bar.
Specifically, we review your Incoloy 800/800H/800HT hex bar specification, confirm the designation and document scope, and return pricing with clear terms. Production then follows the signed specification, and each consignment of this Incoloy 800/800H/800HT hex bar ships with the full paperwork set.
