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Quality Oxidation Carburization Resistance Incoloy 800H Nickel Iron Chromium Alloy factory
Quality Oxidation Carburization Resistance Incoloy 800H Nickel Iron Chromium Alloy factory

Oxidation Carburization Resistance Incoloy 800H Nickel Iron Chromium Alloy

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Oxidation Resistance Incoloy 800H

Carburization Resistance Incoloy 800H

Nickel Iron Chromium Alloy
Product Summary
Incoloy 800H is a nickel-iron-chromium superalloy specifically designed and optimized for exceptional creep and rupture strength at elevated temperatures. Unlike the standard Incoloy 800 grade, Alloy 800H features a controlled carbon content range of 0.05-0.10%, which provides significantly enhanced ...

Product Details

Highlight:

Oxidation Resistance Incoloy 800H

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Carburization Resistance Incoloy 800H

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Nickel Iron Chromium Alloy
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

Incoloy 800H is a nickel-iron-chromium superalloy specifically designed and optimized for exceptional creep and rupture strength at elevated temperatures. Unlike the standard Incoloy 800 grade, Alloy 800H features a controlled carbon content range of 0.05-0.10%, which provides significantly enhanced mechanical stability and performance in the 593°C to 982°C (1100°F to 1800°F) service temperature range.

This austenitic alloy maintains a stable microstructure even after prolonged high-temperature exposure, offering excellent resistance to oxidation, carburization, and sulfidation. The carefully balanced chemistry of 30-35% nickel and 19-23% chromium ensures outstanding corrosion resistance in both high-temperature and aqueous environments. Alloy 800H is commonly supplied to ASTM B409, ASME SB-409, and ASTM B564 specifications, making it a preferred material for critical applications in petrochemical processing, power generation, and industrial furnace components.

Key advantages:
  • Controlled Carbon Content: 0.05-0.10% carbon optimizes creep and rupture strength
  • High-Temperature Performance: Excellent mechanical properties from 593°C to 982°C (1100°F to 1800°F)
  • Oxidation & Carburization Resistance: Superior performance in high-temperature atmospheres
  • Creep & Rupture Strength: Significantly enhanced compared to standard Alloy 800
  • ASTM Grain Size Control: Minimum grain size of ASTM 5 or coarser ensures stability
  • Versatile Fabricability: Excellent weldability and formability using standard techniques
Product Specifications
Parameter Details
Product Name Incoloy 800H / Alloy 800H / Incoloy® 800H
UNS Designation N08810
Werkstoff Number 1.4876
EN Designation 1.4958
British Standard BS 3072NA15 (Plate/Sheet), BS 3073NA15 (Strip), BS 3074NA15 (Seamless Tubes), BS 3075NA15 (Wire), BS 3076NA15 (Rod/Bar)
Common Trade Names Nickelvac 800H, Nickel 800H, Ferrochronin 800H, Nicrofer 3220
Product Forms Plate, Sheet, Strip, Rod, Bar, Wire, Seamless Pipe, Welded Pipe, Seamless Tube, Welded Tube, Forgings, Forging Stock
Supply Condition Solution Heat Treated (SHT), Annealed
Available Dimensions Sheet/Plate: 0.3mm – 50mm thickness; Tube: 6mm – 219mm OD (custom available)
Standard Length 2000mm, 2438mm, 3000mm, 6000mm (or as required)
Custom Sizes Available upon request
Surface Finish Annealed, Pickled, Descaled, Bright Annealed
Chemical Composition

The chemical composition of Incoloy 800H complies with ASTM B408, B409, and B407 standards.

Element Content (%) Notes
Nickel (Ni) 30.0 – 35.0 Provides austenitic stability and corrosion resistance
Chromium (Cr) 19.0 – 23.0 Enhances oxidation and carburization resistance
Iron (Fe) ≥ 39.5 (balance) Base element, balances cost and properties
Carbon (C) 0.05 – 0.10 Controlled range for optimized creep strength
Manganese (Mn) ≤ 1.50 Aids in hot workability
Silicon (Si) ≤ 1.00 Improves oxidation resistance
Phosphorus (P) ≤ 0.045 Minimized to maintain ductility
Sulfur (S) ≤ 0.015 Controlled for hot workability
Aluminum (Al) 0.15 – 0.60 Stabilizes against intergranular attack
Titanium (Ti) 0.15 – 0.60 Stabilizes against intergranular attack
Aluminum + Titanium 0.30 – 1.20 Combined stabilizer content
Copper (Cu) ≤ 0.75 Residual element
ASTM Grain Size 5 or coarser Ensures high-temperature stability

Actual mill test certificates (EN 10204 3.1) available per batch.

Comparison with 800 and 800HT Grades:

Element 800 (N08800) 800H (N08810) 800HT (N08811)
Carbon (C) ≤ 0.10% 0.05 – 0.10% 0.06 – 0.10%
Aluminum (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%
Al + Ti 0.30 – 1.20% 0.30 – 1.20% 0.85 – 1.20%
Grain Size Not specified 5 or coarser 5 or coarser
Key Feature Standard grade Controlled carbon Highest creep strength
Mechanical Properties

Room Temperature Properties (Annealed / Solution Heat Treated)

Property Metric (MPa) Imperial (ksi)
Tensile Strength (Rm) 550 – 750 80 – 109
Yield Strength 0.2% Proof (Rp0.2) 240 – 310 35 – 45
Elongation (A) ≥ 45% ≥ 45%
Hardness (HB) 140 – 190 140 – 190
Density 7.94 g/cm³ 0.287 lb/in³
Melting Point 1350 – 1400°C 2460 – 2550°F
Modulus of Elasticity 196 GPa 28.4 x 10³ ksi

High-Temperature Mechanical Properties (Typical for 800H and 800HT)

Temperature Hardness Tensile Strength Yield Strength (0.2% Offset)
°F °C BHN ksi MPa ksi MPa
80 27 126 77.8 536 21.7 150
800 425 — 67.5 465 18.8 130
1000 540 90 62.7 432 13.0 90
1200 650 84 54.8 378 13.5 93
1300 705 82 47.7 329 15.8 109
1400 760 74 34.2 236 13.1 90

Operating Temperature Ranges:

  • Incoloy 800 (Standard Grade): Up to approximately 816°C (1500°F)
  • Incoloy 800H: 593°C to 982°C (1100°F to 1800°F) — optimized for creep resistance
  • Incoloy 800HT: 593°C to 982°C (1100°F to 1800°F) — highest creep rupture strength

Typical Rod & Bar Properties:

  • 0.2% Yield Strength: 30 – 60 ksi (205 – 415 MPa)
  • Tensile Strength: 75 – 100 ksi (515 – 690 MPa)
  • Elongation: 60 – 30%
Product Forms & Applicable Standards
Product Form ASTM ASME BS EN/DIN
Rod & Bar B408 SB408 BS 3076NA15 DIN 17460, EN 10095
Wire — — BS 3075NA15 —
Plate & Sheet B409, B906 SB409, SB906 BS 3072NA15 DIN 17460, EN 10028-7, EN 10095
Strip — — BS 3073NA15 —
Seamless Tube B163, B407 SB163, SB407 BS 3074NA15 DIN 17459
Welded Tube B515 SB515 — —
Seamless Pipe B407, B829 SB407, SB829 — —
Welded Pipe B514, B775 SB514, SB775 — —
Forgings B564 SB564 — —
Fittings B366 SB366 — —

ASME Code Cases: Case 1325 (All Product Forms), Case 2339 (Plate), Case 1983 (Seamless Pipe & Tubes)

Application Areas

Incoloy 800H is widely used across industries requiring reliable performance in high-temperature and corrosive environments, particularly where creep and rupture resistance are critical:

Petrochemical & Chemical Processing

  • Process piping and heat exchangers in refineries and petrochemical plants
  • Ammonia effluent coolers and reformers
  • Ethylene pyrolysis tubes and cracking furnace components
  • Hydrocarbon processing equipment and reformers
  • Chemical processing vessels and piping systems

Industrial Heating & Heat Treatment

  • Radiant tubes and furnace muffles for industrial heating
  • Carburizing fixtures, retorts, and baskets in heat treatment furnaces
  • Heating element sheathing and furnace rollers
  • Industrial furnace components and hardware
  • High-temperature springs and fasteners

Power Generation

  • Steam generator tubing in conventional and nuclear power plants
  • Superheater and reheater tube support systems
  • Nuclear reactor components
  • Heat recovery steam generator (HRSG) components

Oil & Gas Industries

  • Downhole tubing and components
  • Wellhead equipment and valves
  • Gas turbine components

Aerospace & Gas Turbines

  • Commercial gas turbine engine components
  • Combustion chambers and transition ducts
  • High-temperature fasteners

Other Critical Applications

  • Food processing equipment requiring high-temperature stability
  • Electric range heating-element sheathing
  • Cryogenic storage tanks
  • Pressure vessels
  • Thermal processing equipment
Contact Us

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