# CuNi19 Alloy Wire

CuNi19 is a **[NiCu alloy wire](https://cvsicelement.com/resistance-wire/cuni/)** built for stable medium-temp industrial electric heating jobs like ovens, heat treat equipment, and non-stop furnaces.

## Standout Features of CuNi19

Starting with CuNi19, NiCu alloys hit the **“engineering stability first” zone**.

- Nickel close to 20%

- Resistivity bumped up more

- Temp coefficient (TCR) drops noticeably

This means

- Less resistance wobble with temp shifts

- Power control more predictable

- Slower drift after long runs

Intuitive engineering vibe

- Same conditions, CuNi19 often “ages slower” than CuNi10

- Killer for long-term non-stop at 350–400°C

## Core Specs (With WCuNi19 (NC025) Specs Table

ItemValueAlloy NameCuNi19 (NC025)Composition (%)Ni ≈19, Mn: 0.5%, Cu Bal.Max Continuous Temp400°CMelting Point (approx.)1135°CDensity8.9 g/cm³Resistivity (20°C)0.25 μΩ·m ±5%Tensile Strength≥340 MPaElongation≥25%TCR (20–600°C)