Our 4J50 Nickel Alloy Bar is a rock-star choice for temperature-varying systems needing dimensional stability. With 50% nickel and 50% iron, it boasts a low CTE of ~4.8 ppm/°C (20-400°C), keeping your components steady through temperature swings. It’s tough, corrosion-resistant, and a breeze to machine, making it perfect for precision parts. Whether you’re building sensors or optical mounts, our 4J50 bar delivers the reliability you need to keep things on point.
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The precision engineering market is on fire, with a projected CAGR of 5.7% through 2032, driven by aerospace, electronics, and automotive advancements. As industries demand smaller, more precise components, low- Expansion Alloy s like our 4J50 bar are critical. Aerospace needs them for optical systems and sensors, while electronics rely on stable materials for connectors and regulators. The rise of IoT and smart manufacturing is pushing the need for alloys that perform under thermal stress. Our 4J50 bar is built to meet these trends with top-notch stability and durability.
| 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 4J50 Nickel Alloy Bar is a go-to for precision applications. It’s used in aerospace sensors, where temperature changes can’t mess with accuracy. Optical mounts in high-end instruments rely on its stability to keep alignment spot-on. In electronics, it’s perfect for connectors and temperature regulators that need to resist thermal distortion. Automotive systems, like engine monitoring sensors, also benefit from its low CTE. Wherever dimensional stability is critical, our 4J50 bar shines.
Comparison Table: 4J50 Nickel Alloy vs. 4J47 Nickel-Iron vs. Invar 4J36
Parameter | 4J50 Nickel Alloy | 4J47 Nickel-Iron | Invar 4J36 |
|---|---|---|---|
Composition | 50% Ni, 50% Fe | 47% Ni, 53% Fe | 36% Ni, 64% Fe |
CTE (ppm/°C, 20-400°C) | ~4.8 | ~4.7 | ~1.2–1.5 |
Temperature Range | -40°C to 400°C | -40°C to 350°C | -50°C to 230°C |
Curie Temperature | ~420°C | ~410°C | ~279°C |
Yield Strength (MPa) | ~340 | ~330 | ~260–300 |
Tensile Strength (MPa) | ~550 | ~540 | ~450–550 |
Density (g/cm³) | 8.21 | 8.18 | 8.05 |
Applications | Sensors, optical mounts | Precision tooling, optical mounts | Aerospace tooling, composite molds |
Corrosion Resistance | Excellent | Excellent | Moderate |
We know the market’s full of alloy options, but our 4J50 Nickel Alloy Bar stands out for its quality and performance. Our strict quality control ensures a consistent CTE and robust mechanical properties (yield strength ~340 MPa, tensile strength ~550 MPa). We offer customized bar sizes and forms to match your exact specs, with faster delivery than many alternatives. Our efficient production process keeps costs low without compromising quality, and our alloy’s excellent corrosion resistance and machinability give it an edge in precision applications. With decades of expertise, we’re your trusted partner for high-performance alloy solutions.
Why Choose Our 4J50 Nickel Alloy Bar?
Our 4J50 Nickel Alloy Bar is engineered for dimensional stability in temperature-varying systems. Its low thermal expansion, durability, and corrosion resistance make it ideal for aerospace, electronics, and automotive applications. Whether you’re crafting precision sensors or optical mounts, our bar ensures your components stay reliable. Contact us today to see how 4J50 can take your projects to the next level!
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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 4J50 Nickel Alloy Bar?
It’s a nickel-iron alloy bar designed for dimensional stability, ideal for temperature-varying systems requiring minimal thermal expansion.What are the key properties of 4J50?
It offers a CTE of ~4.8 ppm/°C (20-400°C), excellent corrosion resistance, and high mechanical strength, perfect for precision components.What industries use 4J50 Alloy Bar?
Aerospace, electronics, precision engineering, and automotive industries rely on it for thermally stable parts.What are common applications for 4J50?
It’s used in precision sensors, optical mounts, electronic connectors, and temperature regulators needing consistent dimensions.How does 4J50 compare to other precision alloys?
Its 50% nickel content provides a balanced CTE and enhanced strength, offering superior stability compared to many alloys.What temperature range is 4J50 effective in?
It maintains low thermal expansion from -40°C to 400°C, ensuring reliability in temperature-varying environments.Is 4J50 weldable or machinable?
Yes, it’s weldable and machinable with standard techniques, offering great workability for intricate components.How does 4J50 align with industry trends?
It supports the demand for high-precision, thermally stable materials in aerospace, electronics, and IoT-driven automation.
