Truck Scale Manufacturer

Leading Expansion Alloy Factory Since 2002

● Strict Control Of Raw Materials
● 100% Quality Inspection
● More Than 20 Years Of Experience In The Industry
● 12,000m² Self-owned Factory
● Annual Production Capacity Of 1200 Tonnes

Expansion Alloy Manufacturer & Supplier

DLX Alloy specializes in manufacturing and supplying high-quality Expansion Alloys available in various compositions, forms, and specifications. Our premium alloys are designed for superior heat resistance, oxidation resistance, and durability, ensuring safety and performance. These eco-friendly materials are engineered for high-temperature applications, offering excellent corrosion resistance and stability. We provide a wide range of Expansion Alloy products, including wires, strips, and custom forms tailored to your needs.

Looking to purchase a bulk order of Expansion Alloys? DLX Alloy can meet your production requirements. If you have specific needs not listed here, feel free to request customization. Contact us today, and we’ll be happy to assist you!

Expansion Alloy Features

 Some expansion alloys, such as Invar alloys, expand almost not at all with temperature changes, while other types can be engineered to have a specific expansion rate.
These alloys maintain shape and size stability, even in environments with significant temperature fluctuations.
They typically offer enough strength and toughness, making them suitable for complex structural components.
They are easy to process with cold and hot working, welding, and other forming techniques.
Many expansion alloys also exhibit excellent corrosion resistance.

Expansion Alloy Applications

Precision-instruments-and-measuring-devices
 

Precision instruments and measuring devices

 
such as balances, microscopes, and laser interferometers
 
100002970
 

Electronics and semiconductors

 
integrated circuit boards, connectors, resistors, etc.
  
Aerospace-Components
 

Aerospace

 
navigation systems, control systems on aircraft and satellites.
  
  
auto
 

Automotive industry

 
engine sensors, exhaust system components.
  
 
 
  
 
Energy-industry
 

Energy industry

 
Applied in oil well tubing, subsea pipelines, and other components exposed to harsh conditions. sensitive equipment in nuclear power plants, thermal power stations, such as instrument panels and controllers
Watchmaking
 

Watchmaking

 
precision components such as gears and mainsprings in high-end watches.
 
 
 
 
Lighting-industry
 

Lighting industry

 
metal brackets and connectors in light bulbs and LED lighting fixtures.
 
  
  
 
  

Still not finding what you're looking for? Contact our consultants for more available products.

Expansion Alloy Forms

Expansion Alloy Rod

Expansion Alloy Strip

Chemical Composition

Elements   4J29 4J36
Carbon (C) Not greater than 0.03 0.05
Sulfur (S) 0.02 0.02
Phosphorus (P) 0.02 0.02
Manganese (Mn)   ≤0.50 0.20-0.60
Silicon (Si)   ≤0.30 ≤0.30
Nickel (Ni)   28.5-29.5 35.0-37.0
Chromium (Cr)   - -
Cobalt (Co)   16.8-17.8 -
Iron (Fe)   Rest Rest
Other Elements      

Thermal Expansion Properties

Alloy Grade 20°C-100°C 20°C-300°C 20°C-500°C
4J36 Invar Alloy 1.2×10⁻⁶ /°C 2.5×10⁻⁶ /°C -
4J29 Kovar Alloy 4.6×10⁻⁶ /°C 5.5×10⁻⁶ /°C 6.2×10⁻⁶ /°C

Mechanical Properties

Alloy Grade 4J36 Invar Alloy 4J29 Kovar Alloy
Density (g/cm³) 8.1 8.2
Tensile Strength (MPa) 500-600 600-700
Yield Strength (MPa) 250-350 300-400
Hardness (HV) 150-200 200-250

Electrical Properties

Alloy Grade 4J36 Invar Alloy 4J29 Kovar Alloy
Electrical Resistivity (10⁻⁶ Ω·cm) 80 50
Thermal Conductivity (W/m·K) 10-12 16-18

Production Process of Expansion Alloy

DLX Alloy has over 20 years of experience in manufacturing custom Expansion Alloys with innovative compositions and forms. Elevate your industrial applications with our comprehensive offerings as a leading CuNi alloy manufacturer. From high-performance wires to tailored alloy designs, we specialize in crafting premium Expansion Alloys that embody durability, heat resistance, and superior quality.

Expansion Alloy Rod

Expansion Alloy Strip

Steps DZX Do Time
Confirmation of product parameters and application We confirm the product according to the demand Immediate
Sample customization In stock or confirm OEM/ODM customization Immediate
Production and processing Confirmation of production as well as product testing 7-15 days
Packaging and Transportation Using carton + preservative film + pallet According to the national

How Does DLX ALLOY Control The Quality?

  

 

1.Raw Material Purchase Control

 
Establish long-term co-operation with reputable raw material suppliers to ensure the quality stability of raw materials.
Each batch of raw materials are required to provide quality documents (such as raw material reports, composition test reports, etc.).
Through professional incoming material testing, including chemical equipment composition analysis and mechanical performance testing, to ensure compliance with technical requirements.
 

  

 

2. Production process control

 
On-line inspection of key production nodes, such as dimensional measurement, strength test, etc., to ensure that the products at each stage are qualified.
Real-time monitoring of heat treatment, welding and other processes to ensure that the process parameters meet the design requirements.
 
 
 
 

  

 

3. Finished product quality testing

 
Chemical composition analysis: confirm the product composition by spectral analyser.
Mechanical performance test: including axial, impact, elasticity and other tests.
Non-destructive testing: Ensure that the products are free of cracks, air holes and other defects through scanning, ray testing, magnetic particle or penetration testing.
Appearance testing: check whether the product surface is smooth and free of scratches, rust or other surface defects.

Expansion Alloy Wholesale

High-Temperature Expansion Alloy Rod / Strip / Bar for Industrial Heating – Bulk Wholesale Available,we specialize in manufacturing and supplying Expansion alloy products in bulk.Our materials are widely used for electric heating elements, cutting machines, furnace components, and more.For large quantities, we have more discounts.

Looking to Purchase in-stock Items? Click Here to Check More

Best-in-Class Expansion Alloy Factory

Changzhou DLX Alloy Company was established in 2002 as a professional alloy materials manufacturer. We specialize in the development and production of various metal alloys, including FeCrAl alloys, NiCr alloys, copper-nickel alloys, Inconel alloys, and Hastelloy alloys. These materials can be processed into pipes, pipe fittings, rods, plates, and wires according to your specific needs. Our alloys are widely used in industries such as aerospace, energy, automotive, medical equipment, chemicals, and electronics, receiving consistent praise from our clients.

Our alloy material products have been exported to over 130 countries and regions globally, including South Asia (20%), South America (15%), and Western Europe (15%), establishing long-term cooperation with several international aerospace manufacturers, power companies, and automotive parts suppliers.

Why Choose DLX Expansion Alloy?

One-stop Solution

 
We have established in-depth strategic cooperation with many metal and alloy production bases, covering the product lines from base metals to high-end special alloys.
 
  

Professional R&D Team

 
The company has its own technical research and development team, whose members are senior experts in the field of metal, and we can provide you with exclusive customised metal products according to your specific chemical compositions, special dimensions and specifications.

Full Set of Certification

 
The company has passed a number of international certifications (ISO 9001, CE, RoHS, etc.), to achieve strict control of raw materials, the production process of multi-stage testing and monitoring to ensure that each product can meet customer requirements.
  

Strong Supply Chain Cost Control

 
With years of deep ploughing and accumulation of massive orders, efficient logistics planning and accurate inventory management, significantly compressed purchasing, transport and warehousing costs. Giving dealers more competitive prices and reserving sufficient profit margins; we can flexibly respond to emergency replenishment.

Frequently Asked Questions

Expansion Alloy FAQ

Factory FAQ

Contact

Get In Touch

We implement comprehensive quality control at every stage, including raw materials, production processes, and finished products.
Email dlx-group@dlx-alloy.com
Phone 0086-1990 6119 641
Address NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China
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