Cr10Ni90 Nichrome Alloy Wire Superior High Temperature Stability Low TCR
Cr10Ni90 Resistance Wire – Superior High-Temperature Stability & Low TCR for Critical Applications
Description
Cr10Ni90 resistance wire is a premium nickel-chromium alloy engineered for precision heating applications requiring exceptional thermal stability, low electrical drift, and resistance to oxidation in extreme environments. With a composition of 89–91% nickel, 9–11% chromium, and trace elements (≤0.5% iron, ≤0.3% manganese), this alloy delivers unmatched performance at temperatures up to 1,300°C (2,372°F). Its ultra-low temperature coefficient of resistance (TCR ≤ 50×10⁻⁶/°C) ensures minimal electrical variance under thermal cycling, making it indispensable for aerospace sensors, nuclear reactor instrumentation, and semiconductor manufacturing equipment.
Certified to ASTM B344 and IEC 60172 standards, Cr10Ni90 wire achieves a tensile strength of 600–800 MPa and elongation ≥25%, outperforming conventional Ni-Cr alloys in high-vacuum and inert gas environments. With an electrical resistivity of 1.04 µΩ·m and near-zero magnetic permeability, it guarantees precision in sensitive applications such as cryogenic systems, medical imaging devices, and high-frequency induction heating.
Technical Specifications (Table)
| Property | Value | Standard |
|---|---|---|
| Chemical Composition | Ni: 89–91%, Cr: 9–11%, Fe: ≤0.5% | ASTM B344, IEC 60172 |
| Mn: ≤0.3%, Si: ≤0.2%, C: ≤0.05% | DIN 17470 | |
| Mechanical Properties | Tensile Strength: 600–800 MPa | ASTM E8 |
| Elongation: ≥25% | ||
| Physical Parameters | Density: 8.9 g/cm³ | ISO 6892 |
| Melting Point: 1,400°C | ||
| Electrical Resistivity: 1.04 µΩ·m |
Applications
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Aerospace: Thermocouples, RTD sensors, and satellite thermal control systems.
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Semiconductor Manufacturing: High-purity heating elements for epitaxial reactors and diffusion furnaces.
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Nuclear Energy: Reactor core instrumentation and radiation-resistant sensors.
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Medical Technology: MRI magnet heaters and cryogenic cooling systems.
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Energy Research: Fusion reactor components and superconducting magnet coils.
Q&A
Q1: What makes Cr10Ni90 suitable for cryogenic applications?
A: Its near-zero TCR and non-magnetic properties ensure stable resistivity even at temperatures near absolute zero (−273°C).
Q2: Can Cr10Ni90 operate in high-vacuum environments?
A: Yes. The alloy’s low outgassing rate and oxidation resistance make it ideal for space and semiconductor vacuum systems.
Q3: Does Cr10Ni90 meet RoHS compliance for medical devices?
A: Absolutely. It adheres to RoHS and REACH directives, ensuring safety in medical and electronic applications.
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