Incoloy 800 Round Bar
➡️ Alloy 800 | UNS N08800 | EN 1.4876
➡️ ASTM, EN, JIS & International Standards
➡️ Supply Conditions
➡️ Multiple Diameters & Supply Lengths
➡️ Global Export & International Delivery
Country of Origin:
Europe, Japan, USA
Material Type:
Nickel Alloy
UNS Number:
N08800
Wr. No.:
1.4876
MTC Available:
EN 10204 3.1
Product Description for Incoloy 800 Round Bar
Incoloy 800 is a nickel-iron-chromium alloy, UNS N08800 and Werkstoff 1.4876. Bar is supplied to ASTM B408, the standard covering nickel-iron-chromium alloy rod and bar, with ASME SB-408 applying to pressure equipment.
The composition is 30-35% nickel, 19-23% chromium and 39.5% iron minimum, with controlled aluminium and titanium additions of 0.15-0.60% each. Iron is a deliberate major constituent rather than a residual, which places the alloy between the austenitic stainless steels and the high-nickel alloys in both cost and capability.
Nickel at this level gives good resistance to chloride stress corrosion cracking, far better than 304 or 316 though short of Alloy 600. Chromium provides oxidation resistance, and the aluminium and titanium additions improve high-temperature stability and scaling behaviour.
Two variants exist and they matter. Alloy 800H (UNS N08810) restricts carbon to 0.05-0.10% and requires a grain size of ASTM 5 or coarser for improved creep strength. Alloy 800HT (UNS N08811) adds a combined aluminium plus titanium requirement of 0.85-1.20%. Plain 800 is not approved for the creep service that 800H and 800HT cover, so the exact UNS number belongs on the order.
Bar is supplied annealed or hot-finished, and the two carry different mechanical requirements. The alloy is solid-solution strengthened with no hardening heat treatment available, so cold work is the only route to more strength.
Many mills dual certify to N08810 where the analysis and grain size permit, which is worth asking about at enquiry.
Diameters go from 6 mm to 250 mm, in random or cut lengths. The alloy is essentially non-magnetic.
Typical work is heat-treatment fixtures, furnace hardware, heat-exchanger components, petrochemical process parts and steam generator tubing supports.
Common Applications of Incoloy 800 Round Bar
➡️ Machined shafts, spindles, valve stems, pump sleeves and pins for food, beverage, dairy and pharmaceutical equipment, where the passive chromium oxide film resists both product acids and caustic clean-in-place chemicals.
➡️ Fasteners, studs, bolts, threaded rod and anchor components produced from bar stock, chosen for corrosion resistance combined with the ductility needed for cold heading and thread rolling.
➡️ Chemical, water treatment and general process plant parts such as agitator shafts, flange blanks, nozzles and support components handling water, steam and mildly corrosive media free of significant chlorides.
➡️ Architectural and structural hardware including handrail stanchions, balustrade fittings, tension rods and bollards, where a bright ground or polished bar finish provides both appearance and low maintenance.
International Equivalent Grade for Alloy 800 Round Bar
Standard
Country / Region
Grade
ASTM B408
USA
UNS N08800 (rod and bar)
ASME SB-408
USA
UNS N08800
ASTM B564
USA
UNS N08800 (forgings)
DIN 17460
Europe / EU
1.4876 (X10NiCrAlTi32-21)
BS 3076
United Kingdom
NA 15
Technical Specification for Incoloy 800 Round Bar
Specification
Value
Unit
Material
Nickel alloy
-
Grade
Incoloy 800 / UNS N08800 / 1.4876
-
Product Form
Round bar / rod
-
Standard
ASTM B408, ASME SB-408
-
Diameter
6 - 250 (typical supply range)
mm
Length
3 - 6 (random), or cut to length
m
Manufacturing Process
Hot rolled or forged, annealed
-
Production Route
EAF + AOD refining
-
Surface Finish
Hot-rolled and pickled, peeled, turned, centreless ground, polished
-
Heat Treatment / Delivery Condition
Annealed or hot-finished, as ordered
-
Tolerance Standard
ASTM B408 permissible variations
-
Density
7.94 (typical)
g/cm3
Melting Range
1357 - 1385 (typical)
C
Thermal Conductivity at 20 C
11.5 (typical)
W/m.K
Coefficient of Thermal Expansion (20-100 C)
14.4 (typical)
um/m.C
Specific Heat (0-100 C)
460 (typical)
J/kg.K
Electrical Resistivity at 20 C
0.99 (typical)
uOhm.m
Modulus of Elasticity at 20 C
196 (typical)
GPa
Magnetic Properties
Essentially non-magnetic
-
Related Grades
800H (UNS N08810) and 800HT (UNS N08811) for service above 593 C per ASTM B408
-
Testing / Inspection Standard
ASTM E8 or ASTM A370 for mechanical testing, ASTM E112 for grain size
-
Certification / Inspection Documents
EN 10204 3.1 or 3.2 mill test certificate
-
Technical Specifications
Get the key technical specifications for Incoloy 800 Round Bar
Order to ASTM B408 under UNS N08800, with ASME SB-408 for pressure-retaining components and ASTM B564 covering forgings. Dimensional tolerances come from the permissible variations within B408.
The variant question is the one that causes trouble, and ASTM B408 draws the line explicitly: alloy N08800 is normally employed at service temperatures up to and including 593 C, while N08810 and N08811 are used above 593 C where creep and rupture resistance is required, and are annealed to develop a controlled grain size for that duty. Plain Alloy 800 permits carbon up to 0.10% with no minimum and no grain size requirement, which suits general corrosion and moderate-temperature service but not creep-controlled design. Alloy 800H restricts carbon to 0.05-0.10% and requires ASTM grain size 5 or coarser, both of which raise creep strength. Alloy 800HT adds a combined aluminium plus titanium requirement of 0.85-1.20% on top. ASME approves 800H and 800HT for higher temperature pressure service than plain 800, so a specification calling for 800H will not be satisfied by N08800 material.
Many mills dual certify to N08810 and N08811 where the analysis and grain size permit, which is worth asking about at enquiry stage.
Delivery is annealed or hot-finished, and the two carry different mechanical requirements. The alloy is solid-solution strengthened with no hardening heat treatment available.
Machining behaves like other solid-solution nickel alloys, with rapid work hardening. Welding uses matching or over-alloyed nickel-base filler.
Chemical Composition for Incoloy 800 Round Bar
Element
Symbol
Min
Max
Unit
Nickel
Ni
30.00
35.00
%
Chromium
Cr
19.00
23.00
%
Iron
Fe
39.5
-
%
Carbon
C
-
0.10
%
Aluminium
Al
0.15
0.60
%
Titanium
Ti
0.15
0.60
%
Manganese
Mn
-
1.50
%
Silicon
Si
-
1.00
%
Copper
Cu
-
0.75
%
Sulfur
S
-
0.015
%
Chemical Composition
View the chemical composition and applicable material limits for Alloy 800 Round Bar
Iron at 39.5% minimum is what distinguishes this alloy from the Inconel family, where iron is a controlled residual. Here it is a deliberate major constituent, and it is the reason the alloy costs considerably less than a high-nickel material while still delivering much of the useful behaviour.
Nickel at 30.00-35.00% is enough to give good resistance to chloride stress corrosion cracking, well beyond what 304 or 316 manage with their 8-14%, though short of the near immunity that Alloy 600 achieves at 72%. Nickel also stabilises the austenitic structure across the full temperature range.
Chromium at 19.00-23.00% forms the passive film and supplies oxidation and scaling resistance at high temperature.
Aluminium and titanium, each specified at 0.15-0.60%, are the additions that separate this alloy from a straightforward austenitic stainless steel. They improve high-temperature structural stability and scaling behaviour, and in the 800HT variant a combined minimum of 0.85% is required specifically to raise creep strength.
Carbon is capped at 0.10% with no minimum in plain 800, which is precisely why the grade is not approved for creep service. Manganese, silicon and copper are controlled, and sulphur is held tight at 0.015% to protect hot workability.
Mechanical Properties for Incoloy 800 Round Bar
Mechanical Property
Value
Unit
Tensile Strength, annealed
517
MPa (minimum)
Yield Strength 0.2% Proof, annealed
207
MPa (minimum)
Elongation in 50 mm, annealed
30
% (minimum)
Modulus of Elasticity
196
GPa (typical)
Mechanical Properties
Check the key mechanical properties and performance requirements of Alloy 800 Round Bar
ASTM B408 requires the following of annealed UNS N08800 bar, all minima. Testing follows ASTM E8 or ASTM A370. Hot-finished material carries different requirements, so the condition should be stated on the order.
At 517 MPa minimum tensile plus 207 MPa minimum proof strength, the alloy sits close to annealed 304 stainless. Nobody buys it for strength. Its value is in corrosion behaviour, oxidation resistance and structural stability at temperature, delivered at a lower cost than a high-nickel alloy because of the substantial iron content.
The alloy is solid-solution strengthened with no precipitation hardening available, so heat treatment cannot raise strength. Cold work is the only route, and annealing removes it.
Ductility is high at 30% minimum elongation, and toughness holds down to cryogenic temperatures because the structure is austenitic with no ductile-to-brittle transition.
For creep-controlled design, these figures are the wrong basis entirely, and plain N08800 is the wrong material. Alloy 800H or 800HT should be specified, with design running on ASME allowable stresses for N08810 or N08811. The carbon range and grain size requirements in those variants exist specifically to make creep design possible.
Dimension / Sizes for Incoloy 800 Round Bar
Dimension / Size
Value
Unit
Diameter
6 - 250
mm
Standard Length
3 - 6 (random / mill lengths)
m
Custom Length
Cut to length available on request
-
Diameter Tolerance
Per ASTM B408 permissible variations, varies with size and finish
-
Length Tolerance
Per ASTM B408 or as agreed at order
-
Straightness Tolerance
Per ASTM B408 or as agreed at order
-
End Condition
Square cut, chamfered, or as ordered
-
Surface Finish
Hot-rolled and pickled, peeled, turned, centreless ground, polished
-
Available Size Range
6 - 250, larger diameters by forging on enquiry
mm
Cut-to-Length Availability
Available
-
Dimensional Standard
ASTM B408
-
Dimensions & Sizes
Explore available diameters, lengths, and dimensional requirements for Alloy 800 Round Bar
Pricing for Incoloy 800 Round Bar
Round Bar Prices are generally quoted per kilograms or meters tonnes and can fluctuate with the global raw material and market prices. The final price will depend on a variety of factors, including the grade size, diameter, length, surface finish, the quantity and whether the bars are cut to length or in standard lengths.
For smaller quantities, we can also quote per metre or per piece basis once the required dimensions have been confirmed. Container-loads or orders that are larger in size are typically priced per tonne, based upon the specifications required and the supply conditions.
Please provide your desired dimensions, grades, length number, and end for a current quote including the lead time applicable and details for certification.
Pricing
Get current Incoloy 800 Round Bar pricing based on size, quantity, grade, finish, and delivery requirements.
Why Choose Us
Euro Steel Bars is an international distributor, stockist and exporter of stainless round steel bars that cover carbon, stainless alloy, special grades. We stock a variety of sizes and grades. We guarantee every order with mill test certificates as well as full quality-assurance documentation. Our name speaks to our roots: European-sourced materials that is backed by the certificates and rigor that buyers from Asia as well as the Gulf and Africa are looking for.
Each bar we deliver is accompanied by EN 10204 3.1 mill test certificates as well as complete documentation of quality, so what you receive corresponds to what’s written in the documents. We carry a selection of sizes and grades ready for transport, and cut length upon the request of customers, which results in quicker lead times, whether you’re ordering just a one-off spec or a complete project tonnage.
We operate an actual wholesale business that is that is supported with an internationally-operated supply chain therefore we are able to serve fabricators sourcing one grade the same way in the same way as an EPC contractor who is placing a large order. Our clients include manufacturers, fabricators EPC construction companies, engineers oil and gas projects as well as construction companies. we design our inventory as well as documentation to show what buyers need to bring projects forward.
Our customers trust us across Qatar, Oman, Bahrain, Kuwait, Jordan, Malaysia, Singapore, Thailand, Taiwan, Turkey, Italy and South Africa. If you’re looking to source an Gulf energy project, or a construction project within Southeast Asia, you get the same quality of certified material, the exact documentation, and the exact delivery procedure.
Frequently Asked Questions
What is Incoloy 800 Round Bar?
What is the difference between 800, 800H and 800HT?
Can I use plain Incoloy 800 where 800H is specified?
What standard does Incoloy 800 Round Bar comply with?
What are the key mechanical properties of Incoloy 800 Round Bar?
Why does Incoloy 800 contain so much iron?
Can Incoloy 800 be hardened by heat treatment?
What sizes and lengths are available?
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