Nickel-chromium Alloys Bar Cr20Ni80

Overview

Cr20Ni80 Nickel-Chromium Alloy Bar is a high-nickel (80%) resistance alloy designed for high-efficiency heating elements, offering exceptional resistivity, oxidation resistance, and long-term thermal stability. Capable of continuous operation up to 1200°C with a protective oxide layer, it is widely used in industrial electric furnaces, household heaters, high-temperature sensors, and new energy equipment, making it the top choice for energy efficiency and reliability.

Limiting Chemical Composition, %

Chromium(Cr)..................................................................................................................................15.0

Aluminum(Ni)..................................................................................................................................60.0

Balance Iron (Fe) & Trace Elements

Main Properties

Material Characteristics

Material Properties

●Ultra-High Resistivity:

1.10 μΩ·m (20°C) for efficient electrical-to-heat conversion.

● Extreme Oxidation Resistance:

Oxidation rate <0.5 g/m²·h at 1200°C for extended service life.

● Broad Temperature Stability:

Minimal mechanical degradation from -50°C to 1200°C.

Core Advantages

● Energy Savings:

Stable resistivity ensures uniform heating, reducing energy consumption by 15%-25%.

● Maintenance-Free:

Oxidation and carburization resistance minimize downtime.

● Flexible Processing:

Compatible with ultra-fine wire drawing (≥0.03mm) and complex coiling.

Typical Applications

● Industrial Heating Systems:

Resistance wires, furnace heating elements, heat treatment fixtures.

● Consumer Electronics:

Hair dryer coils, coffee machine tubes, instant water heaters.

● New Energy:

Fuel cell heaters, lithium battery sintering furnace components.

Technical Parameters