Our 4J45 Iron-Nickel Alloy Tube is a top pick for precision instrument fabrication. With 45% nickel and 55% iron, it boasts a low CTE of ~4.5 ppm/°C (20-300°C), keeping your components rock-steady through temperature changes. It’s strong, corrosion-resistant, and a breeze to machine, making it ideal for crafting high-accuracy parts. Whether you’re building gauges or optical systems, our 4J45 tube delivers the precision and reliability you need.
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The precision manufacturing sector is booming, with a projected CAGR of 5.7% through 2032, driven by advancements in aerospace, electronics, and automation. As industries push for smaller, more accurate components, low- Expansion Alloy s like our 4J45 tube are critical. Aerospace relies on them for optical and navigation systems, while electronics need stable materials for connectors and sensors. The rise of smart manufacturing and IoT is driving demand for precision instruments that can handle tight tolerances. Our 4J45 tube is designed to meet these trends with top-notch stability.
| 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 4J45 Iron-Nickel Alloy Tube is a workhorse in precision fabrication. It’s used in high-accuracy gauges and meters, ensuring consistent readings in scientific and industrial settings. Optical instruments, like those in telescopes or microscopes, rely on its stability for precise alignment. In electronics, it’s perfect for temperature regulators and connectors that resist thermal distortion. Aerospace navigation systems also benefit from its low CTE, keeping components accurate in varying conditions. Wherever precision is critical, our 4J45 tube shines.
Comparison Table: 4J45 Iron-Nickel vs. 4J44 Precision Alloy vs. Invar 4J36
|
Parameter |
4J45 Iron-Nickel |
4J44 Precision Alloy |
Invar 4J36 |
|---|---|---|---|
|
Composition |
45% Ni, 55% Fe |
40% Ni, 14% Co, 46% Fe |
36% Ni, 64% Fe |
|
CTE (ppm/°C, 20-300°C) |
~4.5 |
~5.0 (20-500°C) |
~1.2–1.5 |
|
Temperature Range |
-40°C to 300°C |
-50°C to 500°C |
-50°C to 230°C |
|
Curie Temperature |
~400°C |
~415°C |
~279°C |
|
Yield Strength (MPa) |
~320 |
~355 |
~260–300 |
|
Tensile Strength (MPa) |
~530 |
~550 |
~450–550 |
|
Density (g/cm³) |
8.20 |
8.22 |
8.05 |
|
Applications |
Precision gauges, optical instruments |
Sensors, pressure transducers |
Aerospace tooling, composite molds |
|
Corrosion Resistance |
Good |
Excellent |
Moderate |
We know the market’s full of alloy options, but our 4J45 Iron-Nickel Alloy Tube stands out for its quality and versatility. Our rigorous quality control ensures a consistent CTE and solid mechanical properties (yield strength ~320 MPa, tensile strength ~530 MPa). We offer customized tube sizes and forms to match your exact needs, with faster delivery than many alternatives. Our efficient production process keeps costs down without compromising quality, and our alloy’s balanced properties give it an edge in precision applications. With decades of expertise, we’re your trusted partner for high-performance alloy solutions.
Why Choose Our 4J45 Iron-Nickel Alloy Tube?
Our 4J45 Iron-Nickel Alloy Tube is built for precision instrument fabrication. Its low thermal expansion, durability, and corrosion resistance make it ideal for gauges, optical systems, and electronics. Whether you’re in aerospace, electronics, or advanced manufacturing, our tube ensures your components stay accurate and reliable. Contact us today to see how 4J45 can elevate your precision projects!
For more details, pls directly contact us.
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 4J45 Iron-Nickel Alloy Tube?
It’s a nickel-iron alloy tube designed for precision instrument fabrication, offering low thermal expansion for high-accuracy components. -
What are the key properties of 4J45?
It has a CTE of ~4.5 ppm/°C (20-300°C), excellent dimensional stability, and good corrosion resistance, ideal for precision applications. -
What industries use 4J45 Alloy Tube?
Precision manufacturing, aerospace, electronics, and scientific instrumentation rely on it for stable, high-precision components. -
What are common applications for 4J45?
It’s used in precision gauges, optical instruments, temperature regulators, and electronic connectors requiring minimal thermal distortion. -
How does 4J45 compare to other precision alloys?
Its 45% nickel content offers a balanced CTE and strength, providing better stability than many similar alloys for precision fabrication. -
What temperature range is 4J45 effective in?
It maintains low thermal expansion from -40°C to 300°C, ensuring reliability in moderate temperature environments. -
Is 4J45 weldable or machinable?
Yes, it’s weldable and machinable with standard techniques, with slow speeds recommended for optimal precision. -
How does 4J45 align with industry trends?
It supports the demand for high-precision materials in aerospace, electronics, and automation, driven by trends in miniaturization and smart manufacturing.
