Incoloy 800H

Plate, Pipe & Bar | ASTM B409 / B407 / B408

Nickel-iron-chromium alloy optimized for strength and stability in high-temperature service. Stocked in Europe, China & UAE.

Technical Details
boarder
Composition(%):
Nickel
30.0 – 35.0
Chromium
19.0 – 23.0
Iron
Balance
Carbon
0.05 – 0.10
Aluminum
0.15 – 0.60
Titanium
0.15 – 0.60
Manganese
≤ 1.5
Silicon
≤ 1.0
Sulfur
≤ 0.015
Mechanical Properties:
Yield Strength: ≥ 200 MPa
Tensile Strength: ≥ 500 MPa
Elongation: ≥ 30%
Hardness: ≤ 200 HB
Creep Rupture Strength: Excellent to 900–1000°C
Oxidation & carburization resistance: High
Price & Availability

Updated: July 2025

Incoloy 800H Plate / Sheet | Size: 1500 × 3000 mm | Thickness: 6 – 40 mm
REGION
ASTM
UNS
W.NR.
AVAILABILITY
PRICE(USD/KG)
Europe
B409
N08810
1.4958
2-3 weeks

14.8

China
B409
N08810
1.4958
In stock

10.5

Dubai
B409
N08810
1.4958
1-2 weeks

12.2

** All prices EXW. MOQ applies. Ask for DDP quotes.
REGION
ASTM
UNS
W.NR.
AVAILABILITY
PRICE(USD/KG)
Europe
B407
N08810
1.4958
Made-to-order

18.2

China
B407
N08810
1.4958
2-3 weeks

13.6

Dubai
B407
N08810
1.4958
Limited stock

15.5

** All prices EXW. MOQ applies. Ask for DDP quotes.
REGION
ASTM
UNS
W.NR.
AVAILABILITY
PRICE(USD/KG)
Europe
B408
N08810
1.4958
3-4 weeks

17.0

China
B408
N08810
1.4958
2-3 weeks

12.8

Dubai
B408
N08810
1.4958
2-3 weeks

14.2

** All prices EXW. MOQ applies. Ask for DDP quotes.
Minimum Order Guideline

Product Form Minimum Order

Plate / Sheet ≥ 400 KG
Seamless Pipe ≥ 300 KG
Bar / Rod ≥ 200 KG
Mixed Orders ≥ USD 10,000

** Smaller trial lots available for qualified EPCs or R&D labs.

Beyond Certified: Introducing The Alloy360 VANTAGE™ Program

Includes Free Pre-Shipment Third-Party Inspection (PMI, Dimensional, Visual, Photos) by SGS / TÜV

We don’t just sell certified material. We re-certify it ourselves and then have an independent expert verify it. This is our definition of uncompromising integrity.

More about Alloy360 VANTAGE™
Quick Specs
Density: 7.94 g/cm³
Tensile Strength: >500 MPa
Max Temp: ~1000°C
  • Certified Incoloy 800H in seamless pipe, plate, bar, and custom forms.

Forms: Plate / Sheet / Seamless Pipe / Bar / Forging Stock

Standards: ASTM B409, B407, B408

UNS: N08810 / N08811

W.Nr.: 1.4958 / 1.4959

Property

value

Grade
Incoloy 800H / 800HT
UNS Number
N08810 / N08811
Werkstoffnummer
1.4958 / 1.4959
Common Forms
Plate, Pipe, Round Bar
Industry Standards
ASTM B409, B407, B408
Applications
Heat Exchangers, Reformers, Superheaters, Petrochem
Supply Locations
Europe, China, Dubai
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FAQs

What is the main difference between Incoloy 800 and 800H?

The key difference is carbon content and grain size control. 800H has higher carbon (0.05–0.10%) and is heat-treated for improved creep and stress rupture strength, making it better suited for high-temperature service.

Is Incoloy 800H good for use above 900°C?

Yes. 800H is specifically designed for service up to 1000°C. It maintains structural stability and oxidation resistance at elevated temperatures, unlike standard stainless steels.

Can Incoloy 800H be welded?

Yes, it is weldable using standard processes like GTAW and SMAW. Use filler metals such as Inco-Weld A or ERNiCr-3. Post-weld heat treatment is generally not required, but grain size control must be maintained for high-temp service.

How does 800H compare to Incoloy 825 or SS 310S?

800H offers superior mechanical strength at high temperatures, while Incoloy 825 is better for acidic and reducing environments. SS 310S can handle even higher temps but has lower long-term strength.

Is 800H approved for pressure vessels or power boilers?

Yes. Incoloy 800H is listed in ASME Boiler & Pressure Vessel Code, Section VIII and approved for elevated temperature applications in petrochemical and thermal plants.

What are the delivery times for Incoloy 800H to GCC countries?

From Dubai: 5–10 working days
From China: 4–6 weeks
Custom dimensions or thick-wall seamless: 6–8 weeks

Testing & Certifications

Non-Destructive Testing (NDT):

UT
PMI / XRF
Eddy Current (for tubing)

Destructive Testing (DT):

Tensile
Stress rupture
Grain size / Hardness

Documentation:

• EN 10204 3.1 MTC (3.2 with ITP)
• Third-party: SGS / TUV / Lloyd’s / BV
• Heat traceability & inspection stamps for pressure system compliance

Smart Message

Built for Heat – Trusted in Refineries & Petrochem Plants
Incoloy 800H delivers long-term strength and oxidation resistance at temperatures up to 1000°C. Excellent stability under thermal cycling and carburizing atmospheres.

Incoloy 800H ASTM Standards (UNS N08810 / N08811)
Incoloy 800H and 800HT are modified versions of 800 for improved high-temperature strength and stress rupture performance.
ASTM B409 – Plate, Sheet, Strip

• For thermal vessels, reformers, flue gas ducts
• Annealed & descaled or bright finish

ASTM B407 – Seamless Pipe & Tube

• For high-temperature service in refineries and heat exchangers
• Hydrotested, NDT, grain-size controlled

ASTM B408 – Bar, Rod

• For bolting, forgings, valve parts, fittings
• Hot rolled / forged, annealed

Comparison: Incoloy 800H vs 800 vs 825 vs 310S

Property

Incoloy 800

800H

Incoloy 825

SS 310S

Max Temp (°C)
~800
~1000
~550
~1050
Creep Strength
Medium
High
Low
High
Ni Content (%)
~30–35
~30–35
~38–46
~20
Corrosion Resistance
Moderate
Moderate
High (acid)
Moderate
Main Use
Heat exchangers
Reformers, superheaters
Acid, marine
Furnaces
Cost
Moderate
High
High
Moderate

Comparison: Incoloy 800H vs 800 vs 825 vs 310S

Property

Incoloy 800

Nickel Content (%)
~800
Max Temp (°C)
Medium
Creep Resistance
~30–35
Oxidation Resistance
Moderate
Best For
Heat exchangers
Oxidation Resistance
Moderate

Property

800H

Nickel Content (%)
~1000
Max Temp (°C)
High
Creep Resistance
~30–35
Oxidation Resistance
Moderate
Best For
Reformers, superheaters
Oxidation Resistance
High

Property

Incoloy 825

Nickel Content (%)
~550
Max Temp (°C)
Low
Creep Resistance
~38–46
Oxidation Resistance
High (acid)
Best For
Acid, marine
Oxidation Resistance
High

Property

SS 310S

Nickel Content (%)
~1050
Max Temp (°C)
High
Creep Resistance
~20
Oxidation Resistance
Moderate
Best For
Furnaces
Oxidation Resistance
Moderate

Related Grades

Explore other high-performance nickel alloys on our platform:

Incoloy 825 – Excellent resistance to acids and seawater corrosion

Inconel 600 – Strong oxidation resistance at elevated temperatures

Inconel 625 – Superior strength with exceptional corrosion resistance

**Alloys like Inconel 617, Incoloy 801, and Monel 400 are also available for specialized high-temp and corrosion-resistant applications.