Home > Expansion Alloys >

Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal Expansion for Glass-to-Metal Sealing and High Tensile Strength

Product Categories

Monel Alloy [14]
Inconel Alloy [51]
Resistance Alloy [20]
Expansion Alloys [6]
Incoloy Alloy [17]
Hastelloy Alloy [15]
Cobalt Alloy [7]
Soft Magnetic Alloy [15]
Pure Nickel [12]
Stainless Steel [1]
Noble Metal [2]
Nickel Based Welding Products [9]
High Temperature Alloy [10]
Others [15]
Beryllium Copper Alloy [6]
Nickel Foam [1]

Wuxi Nickel New Material Co., Ltd

Trust Seal

Verified Supplier

Credit Check

Supplier Assessment

Contact Now

Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal Expansion for Glass-to-Metal Sealing and High Tensile Strength

Name: Expansion 4J50 Pipes Controlled Expansion Alloy Pipes with Controlled Thermal Expansion for GlasstoMetal Sealing and High Tensile Strength
Brand: NikTech
Price: 1 USD

Weldability : Good

Type : Nickel Strips

Model Number : 4J50

Brand Name : NikTech

Delivery Time : 2-30days

Density : Varies depending on specific alloy

Payment Terms : L/C,T/T,Western Union

Corrosionresistance : Good

Price : Negotiatable

Certification : ISO 9001:2015

Packaging Details : Wooden Crate

MOQ : 150kgs

Tensile Strength : 550-750 MPa

Thermal Conductivity : 10-20 W/mK

Mechanicalstrength : High tensile strength

Place of Origin : China

Alloy : Nickel Copper Alloy

Supply Ability : 300 Ton per Month

Contact Now

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.

Product Tags:

Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal Expansion for Glass-to-Metal Sealing and High Tensile Strength Images

Inquiry Cart 0

Send your message to this supplier


*From:	Your email address is incorrect!
*To:	Wuxi Nickel New Material Co., Ltd
*Subject:	Subject is empty!
*Message:	For the best results, we recommend including the following details: -Self introduction -Required specifications -Inquire about price/MOQ Characters Remaining: (0/3000) Please enter 20 to 3000 characters to contact this supplier!

Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal Expansion for Glass-to-Metal Sealing and High Tensile Strength

Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal Expansion for Glass-to-Metal Sealing and High Tensile Strength

Expansion alloy pipes for glass-to-metal sealing

Controlled thermal expansion alloy pipes

High tensile strength expansion alloy pipes

Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal Expansion for Glass-to-Metal Sealing and High Tensile Strength Images