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Chromel 70/30 Wire Nichrome Alloy Wire Support Custom Size Bright Or Oxidation Color
Basic Info.
| Attribute | Details | Attribute | Details |
|---|---|---|---|
| Model NO. | Chromel 70/30 | Purity | ≥75% |
| Alloy | Nichrome Alloy | Type | Nichrome Wire |
| Chemical Composition | Ni ≥75% | Characteristics | High Resistivity, Good Anti-Oxidation Resistance |
| Range of Application | Resistor, Heater, Chemical |
Electrical Resistivity | 1.09 Ohm·mm²/m |
| The Highest Use Temperature |
1400°C | Density | 8.4 g/cm³ |
| Elongation | ≥20% | Hardness | 180 HV |
| Max Working Temperature |
1200°C | Transport Package | Carton/Wooden Case |
| Specification | 0.01-8.0mm | Trademark | Tankii |
| Origin | China | HS Code | 7505220000 |
| Production Capacity | 100 Tons/Month |
Nickel-Chromium 7030 wire (70% Ni, 30% Cr) is a high-performance alloy widely used in industries for its superior properties. Below is a concise overview.
1. Core Characteristics
- Chemical Composition: Strict 70/30 Ni-Cr ratio with controlled impurities, forming a stable surface passivation film.
- Physical Properties: Resists up to 1100°C; moderate stable conductivity; low thermal conductivity; excellent dimensional stability under temperature cycles.
- Mechanical Properties: High tensile strength, good ductility (easy to draw/bend/weave), and strong fatigue resistance.
2. Unique Advantages
- Corrosion Resistance: Withstands acids, alkalis, salts, and humid environments, reducing maintenance needs.
- High-Temperature Stability: Outperforms Fe-Cr-Al wires, maintaining properties without oxidation/softening at high temps.
- Processability: Adaptable to drawing (ultra-fine wires), weaving (mesh), and bending for diverse shapes.
- Longevity: Operates stably for thousands of hours, cutting operational costs.
3. Typical Applications
- Heating Equipment: Heating elements in electric tubes (water heaters, industrial heaters) and heating wires/belts (pipeline insulation).
- Electronics: Resistance wire for precision resistors/potentiometers; electrode material for high-temp thermocouples/sensors.
- Chemical/Petrochemical: Corrosion-resistant gaskets/springs/filters; heating elements in corrosive production environments.
- Aerospace/Automotive: High-temp parts (engine gaskets) and electrical system components (wiring harnesses).
- Medical: Heating elements in sterilizers/incubators; precision components (guide wires) after biocompatibility treatment.
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