Invar alloy 1j29 tube
Invar alloy 1J29 tube is a low-expansion iron-nickel alloy. It is mainly made of nickel (about 29%) and iron. It also has a little cobalt and manganese. The tube is made by precision cold working or hot working. It has high dimensional stability, good mechanical properties, and a uniform microstructure. Invar alloy 1J29 tube has a very low thermal expansion coefficient (CTE) in a wide temperature range (usually -80°C to +100°C). It is almost "zero expansion." This makes it good for high-precision applications that are sensitive to temperature changes.
Invar alloy 1J29 tube is used in many high-precision fields because of its very low thermal expansion. It is used in laser cavity bodies, satellite antenna supports (to resist space temperature differences), and LNG low-temperature pipe fittings. In the electronics industry, it is used in IC packaging and vacuum tube casings to keep them stable in heat. Optical instruments and aerospace sensors also depend on its ability to resist size changes in tough temperature conditions.
Features of Invar alloy 1j29 tube
Ultra-low thermal expansion: The thermal expansion coefficient of Invar alloy 1J29 tube is very low (≤1.5×10⁻⁶/°C) near room temperature. It can reduce thermal stress deformation effectively.
High stability: After long-term use or temperature cycling, Invar alloy 1J29 tube can still keep its size accuracy. It has excellent anti-creep performance.
Good processability: Invar alloy 1J29 tube can be shaped by welding and cutting. But processing stress must be controlled to avoid performance drop.
Environmental adaptability: Invar alloy 1J29 tube is more oxidation-resistant than ordinary steel. But it needs surface coating for protection in damp or corrosive environments.
Applications of Invar alloy 1j29 tube
Precision instruments: Invar alloy 1J29 tube is used in optical platform supports, laser cavity bodies, and astronomical telescope structural parts that need temperature compensation.
Electronics industry: Invar alloy 1J29 tube is used as integrated circuit packaging material and vacuum electron tube casings. It prevents failure caused by thermal mismatch.
Aerospace: Invar alloy 1J29 tube is used in satellite antenna supports and spacecraft sensor parts to resist extreme space temperature differences.
Energy field: Invar alloy 1J29 tube is used in LNG pipeline fittings. It meets the size stability needs in low-temperature environments.
|
Parameter |
Specification Range |
Remarks |
|
Outer Diameter (OD) |
1 mm ~ 150 mm |
Custom sizes available |
|
Wall Thickness (WT) |
0.2 mm ~ 10 mm |
Ultra-thin walls require special processing |
|
Length |
≤ 6000 mm (longer on request) |
Typically straight tubes, coiled options possible |
|
CTE (Thermal Expansion Coefficient) |
≤1.5×10⁻⁶/°C (-80°C to +100°C) |
Varies with heat treatment |
|
Density |
8.1 g/cm³ |
Similar to carbon steel |
|
Melting Point |
~1430°C |
Grain growth risk at high temps |
|
Tensile Strength |
450~600 MPa |
Higher in cold-worked state |
|
Surface Finish |
Polished/Pickled/Nickel-plated (optional) |
Improves corrosion resistance & weldability |
|
Standards |
GB/T 15018 (CN) | ASTM F1684 (US) |
Other standards upon request |
FAQ
Are you a factory or manufacturer?
A: Yes, we are a factory but we generally use our trading company to handle the business abroad. It will be more convenient to receive the remittance and arrange the shipment.
What is the delivery method?
A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.
Why is your product so cost-effective?
A: We cut out the middlemen in the end-to-end manufacturing process and we obtain raw material directly from its source.
Do you do spot quality inspection or full inspection?
A: 100% full inspection for sure. All unqualified products are discarded.
How do you ensure your lead time?
A: From material preparation to machining and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.
What is the MOQ of Invar alloy 1j29 tube?
A: Depends on quantity, generally, no MOQ limit.
How to pay for it?
A: A bank transfer (T/T) will be acceptable.
What is the delivery time?
A: around 7-20 days which depends on the quantity and production.
What is kind of the package?
A: Generally, we use a carton case or plywood case with protective material inside to ensure the save of cargo
What is the lead time?
A: from order placed to cargo receiving will take around 10-25 days.
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