0Cr25Al5 Resistance Strip – High-Temperature Oxidation Resistance & Longevity for Electric Heating Elements

Description

0Cr25Al5 resistance strip is a premium iron-chromium-aluminum (Fe-Cr-Al) alloy designed for high-temperature electric heating applications, offering exceptional oxidation resistance, mechanical strength, and stable electrical resistivity. With a composition of 23–26% chromium, 4.5–6.5% aluminum, and balanced iron, this alloy forms a dense alumina (Al₂O₃) surface layer at temperatures up to 1,400°C (2,552°F), protecting against oxidation, carburization, and sulfurization in aggressive atmospheres. Its low carbon content (≤0.08%) and controlled silicon (≤1.0%) minimize embrittlement, ensuring durability in cyclic heating applications such as industrial furnaces, kilns, and household heating systems.

Certified to ASTM B603 and DIN 17470 standards, 0Cr25Al5 strip achieves a tensile strength of 600–750 MPa and surface load capacity up to 2.5 W/cm², making it ideal for heating elements in air, vacuum, or inert gas environments. The alloy’s high electrical resistivity (1.45 μΩ·m) and low temperature coefficient of resistance (TCR) ensure consistent power output and energy efficiency, outperforming conventional nickel-chromium alloys in longevity and cost-effectiveness.

Technical Specifications (Table)

Applications

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

2. Household Appliances: Toaster coils, oven heating wires, and electric stoves.

3. Automotive: Glow plugs and exhaust gas recirculation (EGR) heaters.

4. Energy Systems: Electric resistance heaters for boilers and heat recovery units.

5. Aerospace: High-temperature sensors and ignition systems.

Q&A

Q1: Can 0Cr25Al5 strips operate in sulfur-rich atmospheres?
A: Yes. The alumina layer resists sulfur penetration, making it suitable for sulfur-containing environments up to 1,200°C.

Q2: What is the maximum surface temperature for continuous use?
A: 1,400°C in intermittent use and 1,250°C for continuous operation, depending on environmental conditions.

Q3: Does 0Cr25Al5 require pre-oxidation treatment before installation?
A: Pre-oxidation at 800–1,000°C for 1–2 hours enhances the protective alumina layer, extending service life.

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.