Nickel Alloy 800HT Steel Sheet|Alloy 800HT Steel Plate

Alloy 800HT: Alloy 800HT High-Temperature Alloy Sheet,UNS N08811 Nickel Alloy Sheet by Gangsteel

Gangsteel Group is a leading global supplier of Alloy 800HT, also known as Incoloy 800HT or UNS N08811, offering premium Alloy 800HT sheet, Alloy 800HT plate, Incoloy 800HT pipe, Incoloy 800HT round bar, and custom-fabricated components.

Alloy 800HTis a nickel-iron-chromium alloy with tightly controlled aluminum, titanium, and carbon content, optimized for superior creep and stress-rupture properties up to 2000°F (1093°C). It is ideal for petrochemical, power generation, and high-temperature furnace applications.

This guide explores the Incoloy 800HT composition, Alloy 800HT material properties, applications, and why Gangsteel is your trusted source for Alloy 800HT sheet, Incoloy 800HT plate, and round bar at competitive Incoloy 800HT price.

1. What is Alloy 800HT?

Alloy 800HT(UNS N08811), or Incoloy 800HT, is a nickel-iron-chromium alloy specifically engineered for high-temperature strength and corrosion resistance, with enhanced creep and stress-rupture properties due to precise aluminum, titanium, and carbon additions. The alloy undergoes a specialized heat treatment (solution annealing at 2100°F/1149°C minimum) to optimize its microstructure, making Alloy 800HT sheet ideal for reformer tubes and furnace components. Compared to Alloy 800H, Alloy 800HT offers improved creep resistance due to stricter compositional controls and higher annealing temperatures.

How Does Alloy 800HT Compare to Alloy 800H?

Alloy 800HT(UNS N08811) has tighter controls on aluminum and titanium (Al+Ti: 0.85-1.20%) and a higher annealing temperature than Alloy 800H (Al+Ti: 0.30-1.20%), providing superior creep resistance for prolonged high-temperature exposure. Alloy 800HT sheet is preferred for applications requiring extended service life at elevated temperatures.

2. Why Choose Gangsteel’s Alloy 800HT Sheet?

1. Superior Creep Resistance: Alloy 800HT material excels up to 2000°F (1093°C), ideal for Alloy 800HT sheet in reformer tubes.
2. Corrosion Resistance: Resists oxidation, carburization, and sulfidation, surpassing Alloy 600 in high-temperature environments.
3. Excellent Weldability: Maintains integrity in welded Alloy 800HT sheet and pipe with proper techniques.
4. Competitive Pricing: Incoloy 800HT price ranges from US $32-55 per kg (FOB), offering cost-effective solutions for high-performance applications.
5. Global Supply: Gangsteel delivers Alloy 800HT sheet, Incoloy 800HT plate, and round bar worldwide with EN 10204 3.1/3.2 certification.

3. Execution Standards for Alloy 800HT

Gangsteel’s Alloy 800HT products comply with international standards:

1. ASTM B409: For Alloy 800HT plate, sheet, and strip.
2. ASTM B407: For seamless Incoloy 800HT pipe and tubing.
3. ASTM B408: For Incoloy 800HT round bar.
4. ASME SB-409/SB-407: For high-temperature applications.
5. DIN 1.4959: European standard for UNS N08811.

Note: Products are supplied with mill test certificates and tested per DNV, BV, or SGS standards, ensuring compliance with Incoloy 800HT chemical composition and Alloy 800HT material properties.

4. Available Specifications and Product Categories

Gangsteel offers a comprehensive range of Alloy 800HT products tailored to UNS N08811 specifications, with a focus on Alloy 800HT sheet:

4.1 Specifications

1. Alloy 800HT Sheet:
   • Thickness: 0.025mm to 4mm
   • Width: 500mm to 2000mm
   • Finish: Cold-rolled, solution-annealed
   • Applications: Reformer tubes, furnace components, petrochemical reactors
2. Alloy 800HT Plate:
   • Thickness: 0.5mm to 50mm
   • Width: 1000mm to 2500mm
   • Length: 2000mm to 12000mm
   • Finish: Hot-rolled, solution-annealed, descaled
   • Applications: Heat exchangers, power generation
3. Incoloy 800HT Pipe:
   • Types: Seamless, welded
   • Outer Diameter: 0.5” to 8” (12.7mm to 203.2mm)
   • Wall Thickness: Sch 5S to Sch 160
   • Length: Up to 12m
   • Applications: Petrochemical piping, furnace tubes
4. Incoloy 800HT Round Bar:
   • Diameter: 6mm to 300mm
   • Length: Up to 6000mm
   • Finish: Hot-rolled, solution-annealed, centerless ground
   • Applications: High-temperature fasteners, valve stems
5. Custom Components:
   • Types: Flanges, fittings, CNC-cut parts
   • Sizes: Per ASME B16.5 or custom tolerances (±0.05mm)
   • Applications: Petrochemical and furnace systems

4.2 Product Categories

1. Flat Products: Alloy 800HT sheet and plate for high-temperature structures.
2. Tubular Products: Incoloy 800HT pipe for fluid transport in corrosive environments.
3. Bar Products: Incoloy 800HT round bar for machining into high-strength components.
4. Custom Fabrication: CNC-machined parts and welded fittings for tailored solutions.

Note: Custom sizes and finishes are available. Contact Gangsteel for bespoke Alloy 800HT sheet solutions.

5. Composition of Incoloy 800HT

The Incoloy 800HT chemical composition is optimized for creep resistance, as per ASTM B409:

Note: Tighter aluminum and titanium (Al+Ti: 0.85-1.20%) and controlled carbon content, combined with high-temperature annealing, enhance Alloy 800HT material’s creep resistance, making Alloy 800HT sheet ideal for reformer tubes compared to Alloy 800H.

6. Material Properties of Alloy 800HT

• Density: 7.94 g/cm³ (0.287 lb/in³), supporting lightweight Alloy 800HT sheet designs.
• Melting Point: 1350-1400°C (2462-2552°F), suitable for high-temperature applications.
• Hardness: ~80 HRB (annealed), contributing to wear resistance.
• Thermal Conductivity: 11.5 W/m·K at 20°C, ideal for Alloy 800HT sheet in heat exchangers.
• Corrosion Resistance: Excellent resistance to oxidation, carburization, and sulfidation, surpassing Alloy K500 in high-temperature environments.
• Non-Magnetic: UNS N08811 is non-magnetic, ideal for sensitive applications.

7. Mechanical Properties of Alloy 800HT

The mechanical properties of Alloy 800HT material ensure reliability for Alloy 800HT sheet, Incoloy 800HT plate, and pipe, as per ASTM B409 (solution-annealed condition):

Note: Properties vary with heat treatment. For detailed mechanical properties of Alloy 800HT sheet, contact Gangsteel for a datasheet.

8. Equivalent Materials and Standards

Alloy 800HT(UNS N08811) is comparable to other high-temperature alloys:

Note: Alloy 800HT sheet excels in creep-resistant furnace and petrochemical applications, outperforming Alloy 400 in oxidation resistance.

9. Applications of Alloy 800HT Sheet

1. Petrochemical Processing: Alloy 800HT sheet for reformer tubes and catalytic crackers, complementing Alloy 617.
2. Power Generation: Incoloy 800HT plate for superheater tubes and boiler components.
3. Industrial Furnaces: Alloy 800HT sheet for radiant tubes and heat shields.
4. Chemical Processing: Incoloy 800HT pipe for high-temperature piping in corrosive environments.
5. Nuclear Industry: Components leveraging Alloy 800HT material’s creep resistance and thermal stability.

Note: Alloy 800HT is optimized for prolonged high-temperature exposure, offering advantages over Alloy HX in creep-resistant applications.

10. Incoloy 800HT Price

• Alloy 800HT Sheet: US $32-55 per kg (FOB), depending on thickness and order volume.
• Incoloy 800HT Plate: US $34-57 per kg (FOB), based on size and finish.
• Incoloy 800HT Round Bar: US $36-58 per kg (FOB), varying with diameter and finish.

Note: Incoloy 800HT price is slightly higher than Alloy 800H due to specialized heat treatment and compositional controls. Contact Gangsteel for precise quotes.

11. Unique Features of Alloy 800HT Sheet

• Optimized Creep Resistance: Tighter Al+Ti control and high-temperature annealing outperform Alloy 690 in prolonged high-temperature use, ideal for Alloy 800HT sheet.
• Corrosion Resistance: Superior to Alloy K500 in oxidizing and carburizing environments.
• Weldability: Maintains integrity in welded structures with proper techniques, unlike Alloy X-750, which requires post-weld treatment.
• Diverse Forms: Available as Alloy 800HT sheet, Incoloy 800HT plate, pipe, round bar, and CNC-cut parts.

12. Frequently Asked Questions (FAQ)

1. What is the composition of Incoloy 800HT?
   Incoloy 800HT chemical composition includes 30-35% nickel, 19-23% chromium, and 0.85-1.20% Al+Ti, optimized for Alloy 800HT sheet creep resistance.
2. What is the Incoloy 800HT price?
   Ranges from US $32-58 per kg (FOB) for Alloy 800HT sheet, Incoloy 800HT plate, or round bar. Contact Gangsteel for quotes.
3. Is UNS N08811 magnetic?
   UNS N08811 is non-magnetic, ideal for sensitive applications in petrochemical and nuclear industries.
4. What are the applications of Alloy 800HT sheet?
   Used in petrochemical processing, power generation, and industrial furnaces for high-temperature, creep-resistant components.
5. How does Alloy 800HT compare to Alloy 800H?
   Alloy 800HT offers enhanced creep resistance due to stricter compositional controls and higher annealing temperatures, while Alloy 800H is suitable for general high-temperature use.
6. What standards govern Alloy 800HT sheet?
   ASTM B409 and ASME SB-409, with UNS N08811 designation.
7. Can I get a mechanical properties datasheet for Alloy 800HT material?
   Contact Gangsteel for a PDF detailing tensile, yield, and creep data for Alloy 800HT sheet.

13. Why Gangsteel?

1. Competitive Pricing: Incoloy 800HT price at US $32-58 per kg (FOB) for Alloy 800HT sheet, plate, pipe, and round bars.
2. Comprehensive Inventory: Wide range of Incoloy 800HT sheet, plate, pipe, round bar, and custom components.
3. Quality Assurance: EN 10204 3.1/3.2 MTCs and testing per DNV, BV, or SGS standards.
4. Global Delivery: Serving markets in Saudi Arabia, UAE, India, and Europe with efficient logistics.
5. Advanced Fabrication: CNC machining, solution annealing, and precision cutting for Alloy 800HT sheet components.

14. Contact Gangsteel

For inquiries about Alloy 800HT, Alloy 800HT sheet, Incoloy 800HT plate, Incoloy 800HT pipe, Incoloy 800HT round bar, or to request a quote for Incoloy 800HT price or a mechanical properties datasheet, contact Gangsteel Group’s sales team. Trust Gangsteel for high-quality Alloy 800HT material tailored to your project’s needs, backed by expertise and reliability as leading Alloy 800HT suppliers!