01
Round Bar
Hot-worked or annealed rounds for machined furnace parts, supports, and general high-temperature work.
View Round Bar →Incoloy 800 / 800H / 800HT Bar and Rod
Iron-nickel-chromium bar, rod, and forged sections to ASTM B408, in hot-worked, cold-drawn, or solution-annealed condition.
Grain Size Tied to the Heat
We anneal 800H and 800HT bar to ASTM 5 or coarser, and report the E112 rating on the certificate for every lot.
Four Finishing Routes on One Diameter
Hot-worked, cold-drawn, peeled, and centreless-ground surfaces are all quoted against the same bar size, so you pick the finish your machining needs.
Forging Stock on the Same Analysis
Bar and forging stock ship against one heat analysis, which keeps the wrought structure continuous from billet to finished part.
PRODUCT OVERVIEW
About Incoloy 800 / 800H / 800HT Bar and Rod
Incoloy 800 / 800H / 800HT bar and rod covers three designations on one iron-nickel-chromium base, ordered to ASTM B408. Grade 800 handles general high-temperature work, and the controlled-carbon grades take over where creep governs.
Machined furnace parts, reformer supports, and heat-treatment fixtures absorb most of this bar, and forged sections follow the same route. Southerly Alloy works as a professional supplier and exporter across all three grades, and the Incoloy 800 / 800H / 800HT material page carries the grade data behind the bar selection. Above all, the duty temperature decides which designation and which anneal the order needs.
PRODUCT FEATURES
Key Features of Incoloy 800 / 800H / 800HT Bar and Rod
Incoloy 800 / 800H / 800HT bar and rod covers three designations on one iron-nickel-chromium base, ordered to ASTM B408 in hot-worked, cold-drawn, or solution-annealed condition. Grade 800 handles general high-temperature work and ships as-worked or annealed, while 800H and 800HT arrive grain-controlled for creep duty above 593 °C. Round bar, rod, hex, square, flat, and forged sections all run on the same qualified route. Southerly Alloy works as a professional supplier and exporter across the series, and every bundle ships with EN 10204 3.1 documentation.
Incoloy 800 / 800H / 800HT
Controlled Creep Chemistry
Carbon, Al+Ti, and grain size all sit inside the 800H and 800HT windows. Above all, that is what makes long-time creep life predictable.
01
Three Delivery Conditions
The same diameter can be quoted hot-worked, cold-drawn, or solution annealed, and we confirm which one your machining route needs.
02
Grain Size Reported per Lot
An ASTM E112 result accompanies every controlled-carbon heat, so the coarse-grain requirement arrives as a number rather than a promise.
03
Machining Behaviour
Bar machines with standard carbide practice, and it work-hardens less aggressively than the austenitic stainless grades.
04
Forging Stock Traceability
Forged sections come from bar stock of the ordered heat, so chemistry and grain control carry through the forging.
05
Oxidation to About 1100 °C
A chromium oxide scale resists scaling in air and combustion gas across the furnace range.
06
Carburization and Sulfidation Resistance
The nickel-rich matrix slows carbon pickup in carburizing atmospheres and resists sulfur attack in furnace gas.
07
WHY CHOOSE US
Why Choose Incoloy 800 / 800H / 800HT
Condition and finish decide as much of a bar order as the grade, so we confirm all three before quoting. Moreover, a single coordinator stays with the enquiry through to packing. As a result, the delivery date we state is one we can hold.
01
Condition Fixed in Writing
The quote names the grade, the anneal, and the standard behind the bar, so nothing shifts between offer and shipment.
02
Grain Control Before Release
800H and 800HT bar waits for the E112 rating, and we reject a fine grain rather than ship it with a note.
03
Order Size Without Steps
One trial bar and a full container run through the same qualified route, so a sample shows what production will deliver.
04
Packing That Protects the Finish
Bright and ground bar travels in sleeved bundles, so the surface arrives as it left the works.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Bar making adds remelting, working, and a finishing pass that flat and tubular routes never touch. Therefore, the sequence below runs from charge selection to a marked and packed bundle. Moreover, the route records every result against the heat.
01
Charge Selection
We weigh nickel, chromium, and iron into the ordered UNS window, with carbon set at the level your grade calls for.
02
Melting and Refining
The melt runs through AOD or VOD refining, which holds chemistry and gas content inside the ordered limits.
03
Remelting Where Cleanliness Demands It
ESR or VAR refines the electrode and reduces segregation across a heavy section.
04
Hot Working to Section
Forging and rolling reduce the cast structure toward the ordered section size.
05
Solution Annealing
800H takes 1121 °C minimum and 800HT takes 1149 °C minimum, which grows the grain to the coarse structure the duty needs.
06
Cold Finishing
The finishing line draws, peels, or centreless-grinds the bar to its final diameter and surface.
07
Inspection and Release
Chemistry, tensile, dimensional, and surface checks run against the ordered specification before the bundle leaves.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Bar output follows the melting schedule and the annealing campaign, because those two steps set the delivery date. Therefore, the capacity figures below stand behind every promise we make. In addition, we group grades into one campaign whenever the anneal temperatures allow it.
20,000+ m²
Works Area
Melting, forging, annealing, and finishing halls share one site.
50+
Machine Fleet
Forging presses, draw benches, and finishing units run the bar line daily.
600 Tons
Monthly Capacity
Nickel-iron-chromium bar and rod output across the three grades.
30+
Technical Engineers
Metallurgists who set grade, condition, and grain size with you.
3
Delivery Conditions
Hot-worked, cold-drawn, and solution-annealed finishes on one diameter.
9
Bar Forms Quoted
Round, rod, bright, cold-drawn, hex, square, flat, forged, and ground stock.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
We hold a bundle until the ordered tests prove out on the heat behind it. Moreover, diameter and straightness readings stay with the piece record. Consequently, an out-of-tolerance bar cannot hide inside a shipment.
01
Chemistry Held to the Window
Spectrometer analysis confirms carbon, the Al+Ti total, and each residual against the ordered limits.
02
Mechanical Tests on the Supplied Condition
Tensile and hardness values reflect the bar you will receive, not a reference sample from the cast.
03
Dimensional Checks to B408
Diameter, straightness, and cut length meet the tolerance class that the ordered condition carries.
04
Records That Follow the Heat
We file E112 ratings, mechanical results, and PMI where ordered against the heat number.
PRODUCT FORMS
Available Product Forms
Round bar and rod carry most of the enquiries, and each form below now has a dedicated page of its own. Meanwhile, every form is still quoted with its own condition and tolerance route.
02
Round Rod
Smaller-diameter stock with controlled straightness for fasteners and turned components.
View Round Rod →
03
Hex Bar
Multi-flat sections sized across flats for nut blanks and furnace bolting. In addition, drawn and annealed routes share one size list.
View Hex Bar →
04
Square Bar
Square sections for fixture posts, guide rails, and machined blocks that see furnace heat.
View Square Bar →
05
Flat Bar
Rectangular sections cut to your width and thickness for fabricated assemblies.
View Flat Bar →
06
Forged Bar
Heavy sections forged to B564 with a controlled wrought structure for large components.
View Forged Bar →
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Bright Bar
A cold-drawn skin for automatic lathes and for parts where appearance matters.
View Bright Bar →
08
Cold-Drawn Bar
Diameter held tight, with the extra strength that the drawing pass produces.
View Cold-Drawn Bar →
09
Centreless-Ground Rod
Ground stock held to a tight diameter and straightness band for precision shafting. Moreover, ground hexagon sizes are quoted on the same page.
View Centreless-Ground Rod →
10
Threaded Rod
Fully threaded bar and studs for reformer flanges, furnace doors, and hot ducting.
View Threaded Rod →
11
Wire
Fine and spring-temper wire for furnace mesh, baskets, and hot fixture springs. Besides, woven and straightened forms are listed with the tempers.
View Wire →
12
Welding Wire
ERNiCr-3 bare wire and ENiCrFe-3 electrodes that keep the hot strength of the parent metal.
View Welding Wire →
APPLICATIONS
Engineered For Demanding Industries
Furnace and reformer work absorbs most of this bar, because the part often carries load at a temperature where stainless steels sag. Furthermore, the same grades serve fastener and support duty in power and petrochemical plants.
Discuss Your Application →
01
Reformer Support Hardware
Rolls, hangers, and manifolds machined from bar for steam-methane reforming units.
02
Heat-Treatment Fixtures
Baskets, trays, and retorts that cycle through carburizing and annealing furnaces.
03
Ethylene Cracking Components
Support and fixture parts inside transfer-line exchangers and cracking furnaces.
04
Ammonia and Hydrogen Plant Parts
Supports, fittings, and valve trim in reforming and hydrogen service.
05
Exchanger Support Hardware
Tube sheet and baffle fittings inside high-temperature process exchangers.
06
Boiler Hangers and Spacers
Supports for superheater and reheater tube banks in steam service.
07
High-Temperature Fasteners
Studs, bolts, and nuts for flanged joints in hot process and steam lines.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The limits below come from the B408 table for heat analysis, and iron forms the balance of the melt. Three fields separate the designations: the carbon window, the Al+Ti total, and the annealed grain size. In addition, the mill certificate governs acceptance.
| Element | Alloy 800 (UNS N08800) | Alloy 800H (UNS N08810) | Alloy 800HT (UNS N08811) |
|---|---|---|---|
| Nickel (Ni) | 30.0–35.0% | 30.0–35.0% | 30.0–35.0% |
| Chromium (Cr) | 19.0–23.0% | 19.0–23.0% | 19.0–23.0% |
| Iron (Fe) | 39.5% min. | 39.5% min. | 39.5% min. |
| Carbon (C) | 0.10% max. | 0.05–0.10% | 0.06–0.10% |
| Aluminium (Al) | 0.15–0.60% | 0.15–0.60% | 0.25–0.60% |
| Titanium (Ti) | 0.15–0.60% | 0.15–0.60% | 0.25–0.60% |
| Aluminium + Titanium | 0.30–1.20% | 0.30–1.20% | 0.85–1.20% |
| Copper (Cu) | 0.75% max. | 0.75% max. | 0.75% max. |
| Manganese (Mn) | 1.50% max. | 1.50% max. | 1.50% max. |
| Silicon (Si) | 1.00% max. | 1.00% max. | 1.00% max. |
| Sulfur (S) | 0.015% max. | 0.015% max. | 0.015% max. |
| Annealed Grain Size | Not specified | ASTM 5 or coarser | ASTM 5 or coarser |
Mechanical Properties
The B408 minimums change with grade and condition, and the ordered condition decides which row applies. Grade 800 ships hot-worked as-worked or annealed, while 800H and 800HT always arrive solution annealed. Consequently, the same UNS number can carry two different yield values.
| Grade and Condition | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. |
|---|---|---|---|
| N08800 — hot-worked, as-hot-worked | 80 ksi (550 MPa) | 35 ksi (240 MPa) | 25% |
| N08800 — cold-worked and hot-worked, annealed | 75 ksi (515 MPa) | 30 ksi (205 MPa) | 30% |
| N08810 / N08811 — cold-worked and hot-worked, annealed | 65 ksi (450 MPa) | 25 ksi (170 MPa) | 30% |
Two footnotes belong with this table. First, bar ordered to forging quality carries chemistry and surface requirements only, and tensile values stay open. Second, rectangular bar supplied hot-worked at 7.94 mm (5/16 in.) or less takes a 20% elongation minimum.
Physical Properties
The three grades share one physical base, since carbon does not move these values. Therefore, use the figures below for design work rather than for acceptance testing.
| Property | Value |
|---|---|
| Density | Approx. 7.94 g/cm³ |
| Melting range | Approx. 1357–1385 °C |
| Specific heat, 0–100 °C | Approx. 460 J/kg·°C |
| Modulus of elasticity at 20 °C | Approx. 196.5 GPa |
| Thermal conductivity at 20 °C | Approx. 11.5 W/m·K |
| Thermal expansion, 20–100 °C | Approx. 14.4 µm/m·°C |
| Electrical resistivity at 20 °C | Approx. 0.989 µΩ·m |
| Curie temperature | Approx. −115 °C |
| Magnetic behaviour | Non-magnetic at ambient temperature |
| Hardness, annealed | Approx. 138 HB |
Standards
ASTM B408 governs bar and rod for all three designations, and ASME SB408 carries the same text into pressure equipment. In addition, the AMS documents reach only the grade 800 chemistry. Look to ASTM International for the current text of any specification named here.
| Standard / Designation | Scope |
|---|---|
| ASTM B408 / ASME SB408 | Nickel-iron-chromium alloy rod and bar — UNS N08800, N08810, N08811 |
| SAE AMS 5766 | Alloy 800 bars, forgings, and forging stock, solution heat treated — UNS N08800 in sections 4.0 in. (102 mm) and under |
| SAE AMS 5871 | Alloy 800 sheet, strip, and plate — flat product only, so it does not reach bar |
| ASTM B409 / ASME SB409 | Plate, sheet, and strip, for the same vessel package |
| ASTM B407 / ASME SB407 | Seamless pipe and tube, and forging stock for tubular work |
| ASTM B564 / B366 | Forgings, and wrought pipe fittings |
| ASME Code Case 1325 / 1983 | Elevated-temperature design allowables for 800H, Sections I and VIII |
| ASME Code Case 1987 | Maximum allowable stresses for 800HT |
| UNS N08800 / N08810 / N08811 | Material designations for Alloy 800, 800H and 800HT |
| W.Nr. 1.4876 / 1.4958 / 1.4959 | European designations, EN X10NiCrAlTi32-20 / X5NiCrAlTi31-20 / X8NiCrAlTi32-21 |
| DIN 17752 / DIN 17753 | German designations for bar, and for wire |
| BS 3076 (NA 15 series) | British designation for bar and rod of the 800 series |
| JIS NCF 800 / NCF 800H / NCF 800HT | Japanese designations for the series |
| ISO FeNi32Cr21AlTi (NW8800 / NW8810 / NW8811) | ISO designations, the HC and HT suffixes marking the controlled-carbon grades |
| ISO 9723 / ISO 9725 | Bar, and forging stock in nickel and nickel alloys |
| EN 10095 | European heat-resisting materials standard by product form |
Grade Selection Guide
Choice inside the series follows the duty temperature and the design code, and one B408 chemistry base carries all three designations. Specifically, only carbon, the combined Al+Ti figure, and grain size move between them.
| Selection Factor | Alloy 800 | Alloy 800H | Alloy 800HT |
|---|---|---|---|
| UNS | N08800 | N08810 | N08811 |
| Carbon window | 0.10% max. | 0.05–0.10% | 0.06–0.10% |
| Al + Ti combined | 0.30–1.20% | 0.30–1.20% | 0.85–1.20% |
| Annealed grain size | Not specified | ASTM 5 or coarser | ASTM 5 or coarser |
| Minimum solution anneal | Not specified | 1121 °C (2050 °F) | 1149 °C (2100 °F) |
| Typical bar duty | General service to about 593 °C | Creep-controlled service above 593 °C | Highest creep-rupture duty above 593 °C |
| Condition as supplied | Hot-worked as-worked or annealed | Solution annealed, grain controlled | Solution annealed, grain controlled |
| Design code reference | ASTM B408 scope | ASME Code Cases 1325 and 1983 | ASME Code Case 1987 |
Dimensions
The sections below reflect what the bar route normally produces, and the grade and condition decide availability. Meanwhile, sizes outside the list go to the forging or grinding route before quotation.
| Product Form | Typical Supply | Length |
|---|---|---|
| Round bar | 6–500 mm dia. | Cut to length or random |
| Round rod | 3–50 mm dia. | Cut to length |
| Bright bar | 6–150 mm dia. | Cut to length or random |
| Cold-drawn bar | 3–100 mm dia., tight tolerance | Cut to length |
| Hex bar | 10–150 mm across flats | Cut to length or random |
| Square bar | 10–150 mm | Cut to length or random |
| Flat bar | 3–100 mm thick × 10–300 mm wide | Cut to length |
| Forged bar and blanks | 100–500 mm dia. or forged section | Cut to length |
| Centreless-ground rod | 3–100 mm dia., tight tolerance | Cut to length |
Surface Finishes
Finish follows the next machining operation. In addition, 800H and 800HT bar leaves the works solution annealed before finishing starts. Meanwhile, the diameter and the order quantity decide which routes are open.
| Surface Condition | Typical Use |
|---|---|
| Solution annealed | Standard delivery for 800H and 800HT bar, setting the coarse-grain structure |
| Hot-worked, as-rolled | As-worked stock for parts that will be machined to final size |
| Cold drawn | Close diameter control with a brighter surface for automatic lathes |
| Peeled | A machined skin with uniform diameter ahead of further turning |
| Centreless ground | Tight diameter and straightness for precision pins and shafting |
| Polished | Reduced roughness for visible or product-contact parts |
| Rough turned | Machining allowance held on large and forged bar |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 7 Simple Steps
Grade, condition, and finish all decide the route, so we settle all three before cutting any bar. Therefore, the quotation carries a confirmed delivery date and a named document set.
1
Send the Requirement
Share the grade, UNS number, diameter, section, length, quantity, and duty temperature.
2
Match the Grade
We line the duty temperature up against ASTM B408 scope and the ASME code cases before naming the designation.
3
Settle Condition and Finish
Hot-worked, cold-drawn, or solution annealed, and which surface route, become part of the offer.
4
Receive the Offer
Price, lead time, and the document list come back in one message, with the packing method named.
5
Melt, Work, and Anneal
Charge selection, refining, hot working, and the grade-specific anneal run in sequence, with grain size checked before release.
6
Test and Release
Mechanical, dimensional, and surface checks close out against the ordered specification before the bundle leaves.
7
Ship the Order
Marked bundles leave in export packing, with the paperwork travelling alongside.
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 Incoloy 800 bar and rod?
ASTM B408 / ASME SB408 for all three designations. In addition, AMS 5766 adds an aerospace route for grade 800 bar and forgings only.
Why does 800HT need a higher anneal than 800H?
ASTM B408 sets 800HT at 1149 °C minimum against 1121 °C for 800H. The hotter anneal grows the grain further, which is what the Al+Ti window of 800HT is built around.
Does grade 800 bar carry a grain size requirement?
No. Only UNS N08810 and N08811 carry the coarse-grain clause, so grade 800 bar has no annealed grain size limit.
What does forging-quality bar cover?
Chemistry and surface condition only. Therefore, state the properties you need where the part will carry load.
Which condition should I order for machining?
Hot-worked bar machines well on heavy sections. In addition, cold-drawn or ground bar holds tighter diameter when the part comes off an automatic lathe.
Can you supply custom diameters and cut lengths?
Yes. Moreover, drawing, peeling, and grinding cover sizes outside the stock range.
What is your MOQ for Incoloy 800 bar?
One bar for most stock diameters, and one trial section on made-to-order sizes.
What are your trade terms for Incoloy 800 bar?
FOB is our standard basis, and we add EXW or CIF terms when your order calls for them.
What is the lead time for Incoloy 800 bar?
Stock diameters move in 7-15 days, and grain-controlled 800H or 800HT bar takes about 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates?
Both. Every heat ships with a 3.1 certificate, and a 3.2 countersignature comes through a third party on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the grade, UNS number, diameter, quantity, and duty temperature, and we will answer with price, lead time, and documents. In addition, name the condition and finish you want, since those two choices decide the delivery date.
Incoloy 800, 800H and 800HT bar and rod is stocked in common diameters or produced to your drawing, and single-bar trials suit many sizes.
