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Cnc Machining For Invar

Cnc Machining For Invar

Invar, also known as FeNi36 (64FeNi in its more modern nomenclature), is a nickel-iron alloy containing 36% nickel and 64% iron. It was invented in 1896 by Swiss physicist Charles Édouard Guillaume, who received the Nobel Prize in Physics in 1920 for his discovery. The name “Invar” comes from the word “invariable,” referring to its minimal thermal expansion properties.CNC (Computer Numerical Control) machining is a process used in the manufacturing sector that involves the use of computers to control machine tools. This technology enables the production of highly precise components and has applications across various industries.

One of the materials frequently used in CNC machining is Invar, an iron-nickel alloy notable for its low coefficient of thermal expansion.

Invar’s most notable property is its exceptionally low coefficient of thermal expansion (CTE), which is about 1.2 x 10^-6 /°C. This property makes it highly valuable in applications requiring precise dimensional stability under varying temperatures. Other significant properties of Invar include:

  • Density: Approximately 8.1 g/cm³
  • Melting Point: Around 1430°C
  • Elastic Modulus: About 141 GPa
  • Thermal Conductivity: 13 W/m·K
  • Electrical Resistivity: 0.78 μΩ·m
  • Properties:Enhanced machinability with Selenium

CNC machining Invar presents unique challenges and opportunities due to its distinctive properties. The material’s low coefficient of thermal expansion makes it indispensable in applications requiring high dimensional stability. Overcoming the challenges of machining Invar requires careful selection of tools, machining parameters, and advanced techniques. As technology advances, the CNC machining of Invar will continue to evolve, enabling the production of highly precise and reliable components for a wide range of industries.

Invar CNC Machining Suppliers – CNC Machining Invar Alloy Parts

Need precision machined invar components? In the past three years, we have provided customized services of invar alloy parts to dozens of equipment companies in the medical,oil and gas industry.

Multiple CNC machines including CNC machining center,gantry milling machines, CNC lathes, drills, and advanced measuring equipment ensure our in-house capacity to deliver your invar CNC machining parts with the most competitive prices, short lead time and on-time shipping.

At BE-CU.COM, both rapid prototyping and low/medium/high-volume production are available based on customers’ requirements. Our online invar alloys CNC machining services also support one stop service from product design to finishing services, to help clients who just have a rough concept about the end-use invar products.Fast send your 2d-3d drawing to our email for requesting a free quote, we’ll analyze your file and give you a prompt reply.

Invar CNC Machining Suppliers
Advantages Of Invar Machining

Advantages Of Invar Machining

  • Great precision and high tolerance ensure high-quality invar parts
  • Time and cost-saving, great speed of Machining invar part
  • Allows products ordered to be made precisely to the specifications stated
  • Complex invar parts for high tech industry can be machined

Invar Grades Available for CNC Machining

Invar, primarily known for its exceptionally low coefficient of thermal expansion, is available in various grades and forms tailored to specific applications. Each grade of Invar offers unique properties that make it suitable for different machining and functional requirements. This section explores the different grades of Invar available for CNC machining, their composition, characteristics, and typical applications.


Invar 36 (FeNi36)

Invar 36, also referred to simply as Invar, is the most common grade. It comprises approximately 36% nickel and 64% iron. This grade is renowned for its very low coefficient of thermal expansion (CTE), typically around 1.2 x 10^-6 /°C from -100°C to 200°C.

Invar M93

Invar M93 is a more specialized grade with a composition tailored to offer a slightly higher CTE than standard Invar 36, providing a better match for specific industrial applications.

Invar 42 (FeNi42)

Invar 42 consists of approximately 42% nickel and 58% iron. This grade offers a slightly higher CTE compared to Invar 36 but provides better matching with certain materials, such as glass and ceramics, in electronic applications.

Invar 48 (FeNi48)

Invar 48 has a nickel content of approximately 48% and the balance iron. This grade is designed to provide a better match in CTE with certain types of glass and ceramics.

Invar alloys, particularly Invar 36, Super Invar, Invar 42, Invar 48, and Invar M93, offer unique properties that make them suitable for a wide range of high-precision applications. Each grade has specific characteristics that cater to different requirements, from ultra-low thermal expansion to better matching with other materials.

Why Choose Our Invar Cnc Machining Service?

  • Save time and money for your Invar project but quality guaranteed.
  • High productivity, outstanding efficiency and high accuracy
  • A wide range of Invar grades and alloy materials can be machined
  • Custom complex Invar machined parts and components at specific tolerances
  • High speed machining for prototyping and low to high volume production runs
CNC Invar Machining
CNC Invar Machining

Certifications & Quality Machining

  • ISO 9001:2015 certified
  • Fully compliant with the exacting requirements of our customers
  • Compliance in DFARS materials sourcing requirements
  • Strict compliance with PPAP and Process
  • FMEA for automotive customers
  • Skilled in KanBan and CMM Inspection and inventory management systems
  • ITAF 16949 certified

Top Invar Prototype CNC Machining Case Studies

Whether you require machined zinc prototypes or custom zinc parts for your automotive, aerospace applications or medical device component, we can easily help you. With our expertise in CNC invar machining and the ability to integrate external combined processes, we can ensure the best performance for your machining zinc projects.Understanding the properties of different zinc alloy, with lots of testing and experimentation with pre-heating, tool paths and other factors, we are able to minimize deformation on invar alloy. Be-cu prototyping company provides a range of solutions for the machining of invar parts.