Invar Forgings
What is Invar Forgings ?
Invar forging is the process of shaping Invar®—a unique alloy made of 64% iron, 36% nickel, and small amounts of carbon, manganese, and silicon—into strong, stable forms for precision use. Known for its extremely low coefficient of thermal expansion, Invar® is ideal for applications that demand tight control over size and shape, even under temperature changes. Parag Metals is a trusted Invar Forgings supplier, providing high-quality Invar forgings. We meet the needs of industries that depend on accuracy and reliability.
Invar forgings are known for their strength and thermal stability. They are widely used in cryogenic systems, aerospace equipment, and precision instruments in aeronautics. These forgings help ensure performance and safety where exact dimensions are critical. Due to their consistency and reliability, Invar forgings are essential in scientific environments.
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We offer Invar forgings in three main grades: 36, 42, and 49. Each type has its own level of thermal expansion and is chosen based on the application’s needs. Invar 36 offers excellent dimensional stability. Invar 42 and 49 provide variations for electronic and thermal control uses.
Every forging goes through detailed quality checks and mechanical testing. We follow standards to ensure strength, precision, and performance. Each order is packed securely to prevent damage during shipping. As a leading invar forgings stockist, we deliver in various sizes. Contact us to discuss your requirements.
Advantages of Invar Forgings
- Kovar has a thermal expansion coefficient similar to that of borosilicate glass, which minimizes stress and cracking when joined to glass or ceramics.
- Its compatibility with glass and ceramics makes it ideal for creating hermetic seals in electronic components, vacuum tubes, and feedthroughs.
- Forged Kovar exhibits excellent tensile strength, toughness, and resistance to deformation, making it suitable for high-stress structural applications.
- Kovar offers good resistance to oxidation and corrosion, which extends the lifespan of components in harsh environments.
- It maintains its shape and size under varying temperatures and mechanical loads, which is crucial for precision engineering and aerospace applications.
Uses of Invar Forgings
- Used in lead frames, connectors, and semiconductor packages due to its ability to form hermetic seals with glass and ceramics.
- Ideal for creating the metal-to-glass seals in vacuum tubes, X-ray tubes, and certain types of bulbs.
- Suitable for components exposed to extreme heat and stress, like nozzles and turbo-pumps
- Used in precision parts, sensors, and instruments that require dimensional stability under extreme temperature variations.
- Suitable for components in cryogenic systems because it maintains strength and stability at very low temperatures.
Specification of Invar Forgings
| Standards | ASTM F1684 |
|---|---|
| Yield Strength | (0.2% offset): ≥ 240 MPa |
| Tensile Strength | ~ 450–620 MPa |
| Form | Complex geometries |
| Width | 0.5 kg – 100 kg typical |
Available Types of Invar Forgings
Invar Circular Plate Forgings
Invar Shafts Forgings
Invar Seamless Rings Forgings
Invar Hollow Bar Forgings
Invar Disc Forgings
Invar Welded Ring Forgings
Invar Forgings Sizes
| Form | Diameter / Width | Length / Thickness | Custom Sizes |
|---|---|---|---|
| Bars | Custom diameter as per requirement | Custom length as per requirement | Yes |
| Rings | Up to 2000 mm OD | Up to 300 mm thickness | Yes |
| Discs | Up to 1500 mm diameter | Up to 250 mm thickness | Yes |
| Shafts | Custom diameter | Custom length | Yes |
Thickness Chart of Invar Forgings
| Forging Type | Min Thickness (mm) | Max Thickness (mm) | Typical Applications |
|---|---|---|---|
| Bars | 10 | 500 | Shafts, Rods, Structural Components |
| Rings | 20 | 300 | Pipes, Flanges, Bearings |
| Discs | 15 | 250 | Rotors, Flanges, End Covers |
| Shafts | 15 | 500 | Rotors, Axles, Spindles |
Application Industries of Invar Forgings
Export Countries for Invar Forgings
- ASIA – China, Thailand, Singapore, Sri lanka, Bangladesh, Japan, Philippines, Vietnam, Nepal, Bhutan
- Middle East – Kuwait, Dubai, Saudi Arabia, Qatar, Oman, Bahrain, Jordan
- Europe – United Kingdom, Italy, Belgium, France, Croatia, Spain, Germany, Russia, Denmark
- South America – Argentina, Chile, Brazil, Colombia, Paraguay
- Africa – Ghana, South Africa