Our 4J47 Nickel-Iron Alloy Wire is a standout for precision machining and thermal stability. With 47% nickel and 53% iron, it delivers a low CTE of ~4.7 ppm/°C (20-350°C), keeping your components rock-steady under temperature changes. It’s tough, corrosion-resistant, and a dream to machine, making it perfect for crafting intricate parts. Whether you’re building precision tools or electronic connectors, our 4J47 wire ensures top-notch performance every time.
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The precision manufacturing industry is on fire, with a projected CAGR of 5.7% through 2032, driven by aerospace, electronics, and automotive advancements. Miniaturization and automation are pushing the need for materials that stay stable under heat and stress. Aerospace demands thermally consistent alloys for optical systems and sensors, while electronics need precision in connectors and miniaturized components. Our 4J47 wire is built for these trends, offering the thermal stability and machinability that modern manufacturing demands.
| Elements | 4J29 | 4J36 | |
| Carbon (C) | Not greater than | 0.03 | 0.05 |
| Sulfur (S) | 0.02 | 0.02 | |
| Phosphorus (P) | 0.02 | 0.02 | |
| Manganese (Mn) | ≤0.50 | 0.20-0.60 | |
| Silicon (Si) | ≤0.30 | ≤0.30 | |
| Nickel (Ni) | 28.5-29.5 | 35.0-37.0 | |
| Chromium (Cr) | - | - | |
| Cobalt (Co) | 16.8-17.8 | - | |
| Iron (Fe) | Rest | Rest | |
| Other Elements |
| Alloy Grade | 20°C-100°C | 20°C-300°C | 20°C-500°C |
| 4J36 Invar Alloy | 1.2×10⁻⁶ /°C | 2.5×10⁻⁶ /°C | - |
| 4J29 Kovar Alloy | 4.6×10⁻⁶ /°C | 5.5×10⁻⁶ /°C | 6.2×10⁻⁶ /°C |
| Alloy Grade | 4J36 Invar Alloy | 4J29 Kovar Alloy |
| Density (g/cm³) | 8.1 | 8.2 |
| Tensile Strength (MPa) | 500-600 | 600-700 |
| Yield Strength (MPa) | 250-350 | 300-400 |
| Hardness (HV) | 150-200 | 200-250 |
| Alloy Grade | 4J36 Invar Alloy | 4J29 Kovar Alloy |
| Electrical Resistivity (10⁻⁶ Ω·cm) | 80 | 50 |
| Thermal Conductivity (W/m·K) | 10-12 | 16-18 |
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Our 4J47 Nickel-Iron Alloy Wire is a versatile performer. It’s used in precision tooling for aerospace and automotive, where tight tolerances are a must. Optical mounts in high-end instruments rely on its stability to maintain alignment. In electronics, it’s perfect for connectors and sensors that need to resist thermal distortion. You’ll also find it in temperature-sensitive applications like thermocouples and control systems, where its low CTE keeps things precise. Wherever accuracy and stability matter, our 4J47 wire delivers.
Comparison Table: 4J47 Nickel-Iron vs. 4J45 Iron-Nickel vs. Standard Invar
Parameter | 4J47 Nickel-Iron | 4J45 Iron-Nickel | Standard Invar |
|---|---|---|---|
Composition | 47% Ni, 53% Fe | 45% Ni, 55% Fe | 36% Ni, 64% Fe |
CTE (ppm/°C, 20-350°C) | ~4.7 | ~4.5 | ~1.2–1.5 |
Temperature Range | -40°C to 350°C | -40°C to 300°C | -50°C to 230°C |
Curie Temperature | ~410°C | ~400°C | ~279°C |
Yield Strength (MPa) | ~330 | ~320 | ~260–300 |
Tensile Strength (MPa) | ~540 | ~530 | ~450–550 |
Density (g/cm³) | 8.18 | 8.20 | 8.05 |
Applications | Precision tooling, optical mounts | Precision gauges, optical instruments | Clocks, precision instruments |
Corrosion Resistance | Excellent | Good | Moderate |
We know there are plenty of alloy options out there, but our 4J47 Nickel-Iron Alloy Wire is a cut above. Our strict quality control ensures a consistent CTE and robust mechanical properties (yield strength ~330 MPa, tensile strength ~540 MPa). We offer customized wire sizes and forms to match your exact needs, with faster delivery than many alternatives. Our efficient production process cuts costs without compromising quality, and our alloy’s excellent machinability and corrosion resistance give it an edge in precision applications. With years of expertise, we’re your go-to for reliable, high-performance alloys.
Why Choose Our 4J47 Nickel-Iron Alloy Wire?
Our 4J47 Nickel-Iron Alloy Wire is engineered for precision and stability. Its low thermal expansion, superior machinability, and corrosion resistance make it ideal for aerospace, electronics, and advanced manufacturing. Whether you’re crafting precision tools or temperature-sensitive sensors, our wire ensures your components perform flawlessly. Contact us today to see how 4J47 can take your projects to the next level!
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
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FAQs
What is 4J47 Nickel-Iron Alloy Wire?
It’s a nickel-iron alloy wire engineered for precision machining, offering low thermal expansion and high stability for critical components.What are the key properties of 4J47?
It has a CTE of ~4.7 ppm/°C (20-350°C), excellent machinability, and strong corrosion resistance, perfect for precision applications.What industries use 4J47 Alloy Wire?
Aerospace, electronics, precision engineering, and automotive industries rely on it for thermally stable, high-precision components.What are common applications for 4J47?
It’s used in precision tooling, optical mounts, electronic connectors, and temperature-sensitive sensors.How does 4J47 compare to other precision alloys?
Its 47% nickel content offers a balanced CTE and superior machinability compared to many similar alloys, ideal for intricate parts.What temperature range is 4J47 effective in?
It maintains low thermal expansion from -40°C to 350°C, ensuring reliability in moderate to high-temperature environments.Is 4J47 weldable or machinable?
Yes, it’s highly machinable and weldable with standard techniques, making it easy to shape into precise components.How does 4J47 align with industry trends?
It supports the demand for high-precision, thermally stable materials in advanced manufacturing, driven by automation and miniaturization trends.
