NiCr 80/20 Nichrome Resistance Wire ASTM B344 High Temperature Alloy For Heating

NiCr 80/20 resistance wire is one of the most widely used nickel-chromium alloys for heating elements worldwide. With its balanced composition of nickel and chromium, it offers an excellent combination of mechanical strength, oxidation resistance, and stable electrical resistivity. The alloy is defined under ASTM B344 and equivalent standards across different regions, ensuring global recognition and reliable performance.

DLX manufactures NiCr 80/20 wire in a wide range of diameters, from fine wires for small heating elements to heavy-gauge wires for industrial furnaces. The product is available in spool, coil, or straight-cut lengths, meeting the needs of both small appliance producers and large-scale industrial heating equipment manufacturers.

The global demand for resistance wire alloys is strongly driven by electrification and the expansion of industries such as energy, automotive, aerospace, and consumer appliances. As companies transition to more energy-efficient and sustainable heating solutions, NiCr 80/20 remains a preferred material due to its proven reliability and adaptability.

In the consumer sector, small heating appliances such as irons, hair dryers, and toasters rely on NiCr 80/20 for safe, efficient heating. In industrial markets, it is a key component in furnaces, kilns, and laboratory equipment, where precise temperature control is essential.

Compared with FeCrAl alloys, NiCr 80/20 remains the alloy of choice where superior ductility and mechanical strength are required, especially in winding processes and heating elements that undergo frequent expansion and contraction cycles. Market demand continues to grow in both traditional heating applications and in newer sectors such as electric vehicle battery systems, where controlled heating elements are increasingly important.

• Industrial Heating: Electric furnaces, kilns, foundry equipment.
• Laboratory Equipment: Muffle furnaces, thermal analyzers, and precision heaters.
• Consumer Appliances: Hair dryers, toasters, ovens, space heaters, irons.
• Electronics: Resistors, soldering irons, and heating pads.
• Automotive: Pre-heating elements for diesel engines, defrosting systems.
• Energy Sector: Heating systems in renewable energy testing and battery modules.

The versatility of NiCr 80/20 makes it indispensable across these sectors, maintaining strong global demand.

At DLX, we focus on delivering high-quality resistance alloys that meet global specifications while offering customization to fit client-specific needs. Our NiCr 80/20 wire is produced under strict quality control, ensuring consistent resistivity, dimensional accuracy, and surface finish.

Unlike many suppliers who offer only standard grades, we provide tailored solutions for customers requiring special coil sizes, surface treatments, or packaging. Our technical support team works closely with clients to optimize heating element performance, reducing downtime and extending the life of their equipment.

With modern production lines and a strong export capability, DLX ensures stable supply, competitive pricing, and fast delivery to global markets. This commitment to reliability and performance positions us as a trusted partner for manufacturers worldwide.

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

Client Visits

Building Stronger Partnerships

We support all kinds of testing:

1. What is NiCr 80/20 wire made of? It is composed of approximately 80% nickel and 20% chromium, forming a stable resistance alloy.
2. Why is NiCr 80/20 used in heating elements? Because it offers excellent oxidation resistance, high melting point, and consistent resistivity under elevated temperatures.
3. What temperature range can NiCr 80/20 withstand? It performs well up to about 1200°C (2190°F), making it ideal for high-temperature heating.
4. Does NiCr 80/20 wire maintain stable electrical resistance? Yes, it has low drift in resistivity even after long-term heating cycles.
5. What are the typical applications of NiCr 80/20 wire? Electric furnaces, kilns, hair dryers, soldering irons, toasters, industrial heaters, and laboratory heating devices.
6. How does NiCr 80/20 compare to FeCrAl alloys? NiCr 80/20 has better mechanical strength and ductility at high temperatures, while FeCrAl offers longer oxidation life in extremely high-temperature oxidizing conditions.
7. Is NiCr 80/20 wire easy to fabricate? Yes, it can be formed, wound, and welded without cracking, making it user-friendly for manufacturing heating elements.
8. What international standards apply to NiCr 80/20 wire? ASTM B344 in the USA, DIN 17470 in Germany, AFNOR standards in France, and GOST specifications in Russia.