Incoloy 800 Plates: 816 °C Continuous Service and Excellent Formability

Product Overview

Incoloy 800 Plates are wrought, austenitic alloys combining nickel, iron, and chromium to achieve superior high-temperature strength and corrosion resistance. The alloy’s formulation—30–35 % Ni, 19–23 % Cr, 39–46 % Fe, 0.15 % C, 1 % Mn, 1 % Si, 0.6 % Al, 0.6 % Ti—maintains an austenitic structure and resists grain-boundary carbide formation, minimizing embrittlement during prolonged exposures at 760–816 °C. Its solid-solution strengthening, enhanced by high Cr and Al, forms protective chromia and alumina scales, delivering oxidation and carburization resistance in gas-turbine environments and furnace atmospheres. In chemical and petrochemical services, Incoloy 800 Plates resist nitric and sulfuric acids, chloride stress-corrosion cracking, and caustic attack, making them ideal for heat exchangers, reaction vessels, and piping systems under severe conditions. Excellent weldability (TIG/GTAW, electron beam) and ductility (elongation ≥ 30 %) allow complex panel fabrication and heavy-gauge forming without post-weld degradation. Available in thicknesses from 2 mm to 100 mm and widths up to 2 m, Incoloy 800 Plates meet global standards for pressure-containing and high-temperature applications.

Chemical Composition

Mechanical Properties

Physical Properties

Conformance Standards

• ASTM B407 / ASME SB-407 – Nickel-Iron-Chromium Alloy Plate

• AMS 5542 – Special Quality UNS N08800 Plate

• ISO 15156-3 / NACE MR0175-3 – Sour-Service Compatibility

• UNS N08800 / W. Nr. 1.4876 – Material Designation

Applications

• Chemical Processing: Heat exchangers, piping, reaction vessels, nitric acid service

• Petrochemical & Refining: Reforming furnace coils, reactor internals

• Power Generation: Gas-turbine transition ducts, combustor liners

• Furnace Equipment: Radiant tubes, retorts, heating-element sheathing

• Marine: Desalination plant panels, seawater coolers

Frequently Asked Questions

Q1: What temperature range is suitable for Incoloy 800 Plates?
A1: Continuous service up to 816 °C with cycle resistance to 982 °C, maintaining mechanical and corrosion performance.

Q2: Are Incoloy 800 Plates weldable and formable?
A2: Yes—TIG/GTAW and EB welding preserve alloy properties; ductility ≥ 30 % enables stamping and bending without cracking.

Q3: Which industries benefit most from Incoloy 800 Plates?
A3: Chemical, petrochemical, power generation, furnace manufacturing, and marine sectors due to heat and corrosion resilience.

Wuxi Nickel New Material Co., Ltd. is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys, corrosion-resistant alloys, heat-resistant steels, nickel-based welding wires, and other specialty materials, with an annual production capacity of 5,000 tonnes. Our product range includes plates, bars, wires, and strips, which are widely used in industrial electric furnaces, power‐station boilers, petrochemical plants, aerospace, marine engineering, machinery, and electronic instrumentation. These materials are characterized by high electrical resistance, high‐temperature strength, corrosion resistance, wear resistance, and fatigue resistance. We can manufacture in compliance with national, industry, and international standards, and are also able to tailor products to meet specific customer requirements.
The company is committed to improving and enhancing its production infrastructure all year round, with a full range of production and processing equipment including vacuum smelting, hot processing, cold processing, and heat treatment. It also has various physical and chemical analysis testing facilities such as spectrometers to ensure product quality. The company has a high-quality R&D, production, and management team that is fully capable of meeting the complex requirements of the current market for material diversification, refinement, and functionalization. Our company is particularly skilled in developing and producing "specialized materials" that are suitable for the market and specific customer needs, which will be one of our company's characteristics. The company adheres to the business philosophy of "guided by market demand, driven by technological progress, and committed to optimizing and innovating materials to create greater value for customers", serving society and the market.