Invar alloy Seamless 4j29 tube
Invar alloy Seamless 4j29 tube is a low-expansion iron-nickel-cobalt alloy. Its seamless tube is made by precision cold rolling or cold drawing. It has very high dimensional stability and a uniform microstructure. The typical composition of Invar alloy Seamless 4j29 tube is 29% nickel, 17% cobalt, and the rest is iron. This composition makes it have a very low thermal expansion coefficient (CTE) in a wide temperature range (-60°C to +420°C). It is almost "zero-expansion." Invar alloy Seamless 4j29 tube has no weld seam defects. It is suitable for high-precision and high-reliability harsh environments.
Invar alloy Seamless 4j29 tube is used in lithography machine wafer stages, laser cavities (thermal compensation), satellite mirror tubes (anti-thermal deformation), vacuum sealing components (leak prevention), and lithium battery/nuclear energy equipment (heat fatigue resistance). The ultra-low expansion of Invar alloy Seamless 4j29 tube ensures high precision and stability in the semiconductor, aerospace, and energy fields. It is a key material for precision manufacturing.
Features of Invar alloy Seamless 4j29 tube
Ultra-low thermal expansion: Invar alloy Seamless 4j29 tube hardly deforms in changing temperatures. It is a key material for thermal management in precision instruments.
High sealability and strength: The seamless process of Invar alloy Seamless 4j29 tube avoids weak welding areas. It has good airtightness and mechanical strength. It has excellent pressure resistance.
Environmental adaptability: Invar alloy Seamless 4j29 tube is resistant to thermal shock and corrosion (especially suitable for vacuum environments). It is stable in magnetic fields.
Machinability: Invar alloy Seamless 4j29 tube can be machined by precision turning and polishing. But cold working hardening effects need to be controlled.
Applications of Invar alloy Seamless 4j29 tube
Electronics and Semiconductors: Invar alloy Seamless 4j29 tube is used in lithography machine wafer stages and laser cavity bodies that need thermal compensation. It reduces thermal displacement errors.
Aerospace: Invar alloy Seamless 4j29 tube is used in satellite mirror tubes and spacecraft sensor supports. It ensures size matching in extreme temperatures.
Vacuum technology: Invar alloy Seamless 4j29 tube is used in high-energy particle accelerators and vacuum chamber connecting pipes. It takes advantage of its leak-free characteristics.
Energy field: Invar alloy Seamless 4j29 tube is used in lithium battery electrode sintering fixtures and nuclear reactor measuring instruments. It relies on its heat fatigue resistance.
|
Parameter |
Specification Range |
Unit |
Remarks |
|
Outer Diameter (OD) |
2.0 ~ 150.0 |
mm |
Custom sizes available |
|
Wall Thickness (WT) |
0.2 ~ 10.0 |
mm |
Thin to thick wall options |
|
Length |
≤ 6000 (longer upon request) |
mm |
Standard or custom cut |
|
CTE (20~100°C) |
≤ 1.5 × 10⁻⁶ |
/°C |
Ultra-low expansion |
|
Density |
8.1 |
g/cm³ |
Typical value |
|
Tensile Strength |
≥ 520 |
MPa |
Annealed condition |
|
Yield Strength |
≥ 275 |
MPa |
Annealed condition |
|
Elongation |
≥ 30% |
- |
Annealed condition |
|
Operating Temp. |
-60 ~ +420 |
°C |
Maintains low CTE |
|
Surface Finish |
Pickled, Polished, Scale-free |
- |
Customizable upon request |
|
Standards |
ASTM F1684, GB/T 15018 |
- |
Complies with international standards |
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 Seamless 4j29 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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