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| Customization: | Available |
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| Color: | Silver |
| Shape: | Round Tube |
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4J50 Low Expansion Alloy (Kovar Type) | Precision Dimensions | Excellent Glass Sealing Match | For Hermetic Electronics & Aerospace Seals.
This precision tubing is made from 4J50 alloy, a controlled low expansion Nickel-Iron-Cobalt alloy designed to match the thermal expansion of certain glasses and ceramics. This property makes it the premier choice for creating reliable, hermetic seals in electronic and optical packages, ensuring long-term stability and performance.
Key Features
Matched CTE to borosilicate glass
Creates strong, hermetic seals
Excellent corrosion resistance
High dimensional precision
Good machinability and formability.
| Property | Specification | Unit |
|---|---|---|
| Material | 4J50 Alloy (Kovar Type) | - |
| Outer Diameter (OD) | 2.3 | mm |
| Inner Diameter (ID) | 1.5 | mm |
| Wall Thickness | 0.4 | mm |
| Length | 15.3 | mm |
| Tolerance | ±0.02 (OD), ±0.01 (ID) | mm |
| Form | Seamless Drawn Tube | - |
| Density | ~8.2 | g/cm³ |
| CTE (20-400°C) | ~5.5 x 10-6 | /°C |
| Main Components | Ni 49-50%, Co 16.8-17.8%, Fe Bal. | % |
Our company Principle is " Quality first, Customer first".
CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got Iso9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.
1, We're able to design and develop the product what our customers require and meet their requirements through providing the appropriate engineering drawings or samples.
2, We can provide the products within a week after payment.
3, Wecan provide sample of the products customer need.
4, We always insist on "Quality first, Customer first" as our business philosophy.
Question: Are you a trading company or manufacturer?
Answer: We're manufacturer.
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