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Wuxi Nickel New Material Co., Ltd

  • China,Wuxi ,Jiangsu
  • Verified Supplier
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China Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal
China Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal

  1. China Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal

Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal

  1. MOQ: 150kgs
  2. Price: Negotiatable
  3. Get Latest Price
Weldability Good
Type Nickel Strips
Delivery Time 2-30days
Density Varies depending on specific alloy
Payment Terms L/C,T/T,Western Union
Corrosionresistance Good
Packaging Details Wooden Crate
Tensile Strength 550-750 MPa
Thermal Conductivity 10-20 W/mK
Mechanicalstrength High tensile strength
Alloy Nickel Copper Alloy
Supply Ability 300 Ton per Month
Model Number 4J50
Brand Name NikTech
Certification ISO 9001:2015
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Weldability Good Type Nickel Strips
Delivery Time 2-30days Density Varies depending on specific alloy
Payment Terms L/C,T/T,Western Union Corrosionresistance Good
Packaging Details Wooden Crate Tensile Strength 550-750 MPa
Thermal Conductivity 10-20 W/mK Mechanicalstrength High tensile strength
Alloy Nickel Copper Alloy Supply Ability 300 Ton per Month
Model Number 4J50 Brand Name NikTech
Certification ISO 9001:2015 Place of Origin China
High Light Expansion alloy pipes for glass-to-metal sealingControlled thermal expansion alloy pipesHigh tensile strength expansion alloy pipes
Expansion 4J50 Pipes Controlled Expansion Alloy

Expansion 4J50 Pipes are precision iron-nickel alloy pipes engineered for applications requiring controlled thermal expansion and reliable dimensional stability across varying temperature conditions. Containing approximately 50% nickel, these pipes provide a coefficient of thermal expansion that closely matches specific hard glasses and ceramic materials, making them highly suitable for glass-to-metal sealing assemblies and precision electronic components.

Unlike conventional stainless or nickel alloys that prioritize corrosion resistance or high-temperature strength, Expansion 4J50 Pipes are optimized for thermal compatibility and expansion control. Their stable metallurgical structure maintains dimensional accuracy during repeated heating and cooling cycles, which is critical in electronic packaging, vacuum systems, and instrumentation equipment.

Specifications
Parameter Value
Outside Diameter 4 mm - 114 mm
Wall Thickness 0.5 mm - 12 mm
Length Up to 6000 mm
Surface Bright Annealed, Pickled
Form Seamless Pipe / Welded Pipe
Standards GB/T 15007, YB/T 5231
Chemical Composition
Element Content (%)
Nickel (Ni) 49.0 - 51.0
Iron (Fe) Balance
Carbon (C) ≤ 0.05
Manganese (Mn) ≤ 0.80
Silicon (Si) ≤ 0.30
Phosphorus (P) ≤ 0.02
Sulfur (S) ≤ 0.02
Chromium (Cr) ≤ 0.20
Mechanical Properties
Property Value
Tensile Strength ≥ 490 MPa
Yield Strength ≥ 240 MPa
Elongation ≥ 30%
Hardness ≤ 160 HB
Physical Properties
Property Value
Density 8.15 g/cm³
Melting Range 1430 - 1450°C
Thermal Conductivity 15.5 W/m*K
Elastic Modulus 147 GPa
Electrical Resistivity 0.49 µΩ*m
Coefficient of Thermal Expansion (20-300°C) Approx. 9.5 × 10⁻⁶/K
Key Features
  • Controlled thermal expansion characteristics
  • Excellent compatibility with hard glass sealing systems
  • Stable dimensions during thermal cycling
  • Suitable for vacuum and electronic applications
  • Good fabrication and machining performance
  • Reliable long-term sealing integrity
Applications
Glass-to-Metal Sealing Systems
Used in hermetic sealing assemblies and electronic packaging components
Vacuum Equipment
Applied in vacuum chambers, feedthroughs, and scientific instruments
Precision Instrumentation
Suitable for sensors, measurement devices, and control systems
Electronic Components
Used in electronic housings requiring matched expansion properties
Telecommunications Equipment
Applied in specialized sealing and thermal matching applications
Frequently Asked Questions
What are Expansion 4J50 Pipes mainly used for?
They are primarily used in glass-to-metal seals, vacuum devices, and precision electronic assemblies.
Why are Expansion 4J50 Pipes suitable for sealing applications?
Their thermal expansion characteristics closely match specific hard glasses, reducing thermal stress.
Do Expansion 4J50 Pipes have good dimensional stability?
Yes, they maintain stable dimensions during repeated temperature changes.
Can Expansion 4J50 Pipes be machined into precision components?
Yes, the alloy offers good fabrication and machining characteristics.
Are Expansion 4J50 Pipes used in electronic industries?
Yes, they are widely used in electronic packaging and hermetic sealing applications.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer

  • Year Established:

    2002

  • Total Annual:

    20000000-80000000

  • Employee Number:

    50~500

  • Ecer Certification:

    Verified Supplier

Wuxi Nickel New Material Co., Ltd. (Wuxi NikTech) is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys... Wuxi Nickel New Material Co., Ltd. (Wuxi NikTech) is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys...

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  • Wuxi Nickel New Material Co., Ltd
  • Xinwu District, Wuxi City, Jiangsu Province
  • https://www.niktechmaterial.com/

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