0Cr23Al5 Resistance Strip – Premium Fe-Cr-Al Alloy for Extreme Heat & Corrosion Resistance

Description

0Cr23Al5 resistance strip is a high-performance iron-chromium-aluminum (Fe-Cr-Al) alloy engineered for demanding electric heating applications requiring exceptional oxidation resistance, mechanical durability, and energy efficiency. With a composition of 22–25% chromium, 4.5–6.0% aluminum, and balanced iron, this alloy forms a dense, self-healing alumina (Al₂O₃) layer at temperatures up to 1,400°C (2,552°F), providing robust protection against oxidation, carburization, and sulfurization in harsh industrial environments. Its low carbon content (≤0.08%) and controlled silicon (≤1.0%) minimize embrittlement, ensuring longevity in cyclic thermal operations such as industrial furnaces, kilns, and aerospace heating systems.

Certified to GB/T 1234 and DIN 17470 standards, the 0Cr23Al5 strip delivers a tensile strength of 580–720 MPa and a surface load capacity of 2.2 W/cm², making it ideal for heating elements in air, vacuum, or inert gas atmospheres. The alloy’s high electrical resistivity (1.40 μΩ·m) and low temperature coefficient of resistance (TCR) ensure stable energy output, outperforming conventional nickel-chromium alloys in cost-effectiveness and operational lifespan under extreme conditions.

Technical Specifications (Table)

Applications

1. Industrial Furnaces: Heating elements for annealing, tempering, and sintering processes.

2. Energy Systems: Electric boilers, heat exchangers, and thermal reactors.

3. Automotive: Glow plugs, exhaust gas heaters, and diesel particulate filter regeneration systems.

4. Aerospace: High-temperature sensors and ignition components in jet engines.

5. Consumer Appliances: Oven coils, toasters, and industrial-grade hairdryers.

Q&A

Q1: What distinguishes 0Cr23Al5 from other Fe-Cr-Al alloys like 0Cr25Al5?
A: 0Cr23Al5 offers a balanced chromium-aluminum ratio for enhanced cyclic oxidation resistance at marginally lower material costs, ideal for applications up to 1,400°C.

Q2: Can this alloy operate in chlorine-rich environments?
A: While its alumina layer resists oxidation, prolonged exposure to chlorine above 800°C may necessitate protective coatings or controlled atmospheres.

Q3: Is pre-treatment required for new 0Cr23Al5 heating elements?
A: Yes. Pre-oxidation at 900–1,050°C for 1–2 hours strengthens the protective oxide layer, extending service life by up to 30%.

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.