Inconel 617 Rods: High-Temperature Strength and Oxidation and Carburization Resistance

Product Overview

Inconel 617 Rods (UNS N06617/W. Nr. 2.4663a) are precision-forged, solid-solution-hardened nickel-chromium-cobalt-molybdenum bars designed for extreme high-temperature and corrosive conditions. The alloy’s unique formulation—nominally 52 % nickel, 22 % chromium, 12.5 % cobalt, 9.5 % molybdenum, 1.0 % aluminum, and 0.3 % titanium—delivers tensile strengths above 760 MPa and yield strengths around 310 MPa after solution annealing at 982 °C, while maintaining elongation of at least 30 %. This solid-solution strengthening mechanism provides stable mechanical properties without the need for precipitation aging, ensuring consistent performance over long service lives. The high chromium and aluminum content forms a continuous chromia–alumina scale, granting superior oxidation and carburization resistance in both oxidizing and reducing atmospheres, including high-purity water and steam environments. Excellent weldability—via TIG/GTAW or electron-beam—and formability support fabrication of rods, pins, and complex shapes for gas turbines (combustor liners, transition ducts), chemical reactors (coils, agitation shafts), furnace components (radiant tubes, thermocouple sleeves), and nuclear hardware (control-rod stems, spacer pins).

Chemical Composition

Mechanical Properties

Physical Properties

Conformance Standards

• ASTM B166 / B168 – Cold-drawn and hot-rolled rods

• AMS 5520 – Special form, bar and rod

• ISO 15156-3 / NACE MR0175-3 – Materials for sour-gas environments

• UNS N06617 / W. Nr. 2.4663a – Alloy designation

Applications

• Gas Turbines: Combustor liners, transition ducts, turbine blades

• Chemical Processing: Reactor coils, agitator shafts, piping

• Furnace Equipment: Radiant tubes, heat-treat baskets, thermocouple protection

• Nuclear: Control-rod stems, spacer pins, support rods

• Marine: Seawater valves, heat-exchanger tubes, desalination hardware

Frequently Asked Questions

Q1: Why select Inconel 617 Rods for high-temperature service?
A1: Their solid-solution strengthening maintains tensile strength and ductility up to 982 °C, plus superior oxidation and carburization resistance .

Q2: Are Inconel 617 Rods weldable without degradation?
A2: Yes—TIG/GTAW and electron-beam welding produce sound joints; solution annealing post-weld restores full mechanical and corrosion resistance .

Q3: What diameters and finishes are available?
A3: Diameters from 3 mm to 200 mm, standard lengths to 6 m; mill-annealed, annealed & pickled, or stress-relieved per ASTM B166/B168 .

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.