NI60

Supported Applications

The Omega NI60 series is a resistance heating wire composed of Nickel-Chromium alloy (60% Ni, 16% Cr, balance Fe). It is used to make straight or helical coil resistance heaters. The product overview identifies suitability for domestic appliances and industrial applications including rheostats, resistance units, acid dipping baskets, cyanide hardening containers, filter cloth, wire mesh, bolts, and nuts.

A note in the documentation states: "This wire is not intended for use in making thermocouple elements."

Operating Conditions & Performance

The NI60 series supports a maximum operating temperature of 1000°C (1850°F). The material features quick heating, long life, and corrosion resistance. Key physical properties documented for the alloy include:

• Specific Resistance: 675 Ω per circular mil-foot at 68°F (20°C)
• Density: 0.298 lb/in³
• Specific Gravity: 8.25
• Melting Point: Approx 1350°C (2450°F)
• Nominal Coefficient of Linear Expansion: 0.000017 (20 to 1000°C)
• Tensile Strength at 20°C (68°F): Soft Annealed: 95,000 lb/in²
• Nominal Temperature Coefficient of Resistance: 0.00015 Ω/Ω/°C (20 to 500°C)

The series includes a multiplication factor table to obtain resistance at indicated temperatures ranging from 68°F (20°C) to 1600°F (871°C).

Configuration Options

The NI60 series is available in bare wire configurations across multiple American Wire Gauge (AWG) sizes and spool lengths. The model number format follows the pattern NI60-<AWG>-<LENGTH>.

• American Wire Gauges: 18, 20, 22, 24, 26, 28, and 30 AWG
• Diameters (mm/inch): Ranging from 1.0 mm (0.040 inch) for 18 AWG to 0.25 mm (0.010 inch) for 30 AWG
• Spool Lengths: Available in various lengths including 50, 100, 200, 500, and 1000 feet; also offered as 15 m (50') and 60 m (200') spools
• Resistance per foot @ 20°C (68°F): Values range from 0.4219 Ω/ft for 18 AWG to 6.750 Ω/ft for 30 AWG

The documentation provides resistance values at elevated temperatures of 425°C (800°F), 550°C (1000°F), 650°C (1200°F), 750°C (1400°F), and 875°C (1600°F) for each gauge. A note indicates that approximate amperes necessary to produce a given temperature apply only to straight wire stretched horizontally in free air.

Key Product Differences

Variants within the NI60 series are distinguished by AWG size and total length of the spool. The model number suffix indicates the specific gauge (e.g., 040 for 18 AWG, 010 for 30 AWG) followed by the desired length in feet or meters.

Published prices are based on market value at time of printing and are subject to change due to Nickel surcharges, Chromium and precious-metal market fluctuations. The figures provided represent average material as supplied and serve as a basis for engineering calculations.