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Invar Welding Rod
What is Invar Welding Rod ?
Invar Welding Rods are low-expansion alloy filler rods mainly made of iron and nickel. They are best known for their stability under temperature changes, making them ideal for precision welding. These rods are commonly used when thermal expansion must be kept to a minimum. At Parag Metals, we offer high-quality Invar welding rods used in various thermal and dimensional control applications.
Our Invar rods come in lengths up to 1000mm and diameters ranging from 0.8mm to 3.2mm. They are easy to weld using TIG or MIG techniques and are uniformly clean. These rods maintain strength and shape even when exposed to changing temperatures. They provide strong, crack-resistant welds and are usually employed with base metals that match.
Table of Content
- Advantages of Invar Welding Rod
- Uses of Invar Welding Rod
- Specification of Invar Welding Rod
- Available Types of Invar Welding Rod
- Invar Welding Rod Equivalent Grades
- Chemical Composition of Invar Welding Rod
- Invar Welding Rod Mechanical Properties
- Invar Welding Rod Size, Thickness Chart
- Application Industries of Invar Welding Rod
- Export Countries for Invar Welding Rod
Invar Welding Rods Supplier In India, Invar Welding Rods Distributor, Invar Welding Rods Stockist, Invar Welding Rods Wholesaler, Invar Welding Filler Rod, Invar Welding Electrode.
Invar welding rods are used in industries where exact dimensions matter. These include aerospace tools, measuring devices, cryogenic tanks, electronic parts and optical systems. They are ideal for frames, molds, and supports that must stay steady despite temperature swings. This makes them a smart choice for parts that need both strength and thermal consistency.
All rods go through size checks, finish inspection, and composition testing before dispatch. Each pack comes with batch details and quality assurance. If you’re looking for a reliable Invar Welding Rod supplier in India, we are ready to support your project with consistent quality, fair pricing, and timely delivery.
Advantages of Invar Welding Rod
- Very low coefficient of thermal expansion, making it ideal for precision applications.
- Good weldability with excellent dimensional stability.
- Retains mechanical strength and toughness at both low and moderate temperatures.
- Corrosion resistance in mild environments.
- Highly reliable for joining parts where thermal stability is critical.
Uses of Invar Welding Rod
- Precision instruments and measuring devices.
- Aerospace and satellite components requiring dimensional stability.
- Electronic and telecommunications equipment.
- Scientific instruments exposed to temperature variations.
- Molds and tooling for aerospace and optical industries.
Specification of Invar Welding Rod
| Specifications | AWS A5.14 ERNiFe-CI |
|---|---|
| International Specifications | DIN 17745 | ASTM F1684 | ISO 1704 |
| Size | 2.00 mm Dia., 2.50 mm Dia., 3.15 mm Dia., 4.00 mm Dia., 5.00 mm Dia., 6.3 mm Dia. |
| Length | 300 mm to 450 mm |
| Type | Welding Electrode, Arc Welding Rods, TIG Welding Rods |
Available Types of Invar Welding Rod
Invar Welding Electrode
Invar ARC Welding Rods
Invar TIG Welding Rods
Invar Welding Rod Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | EN | JIS |
|---|---|---|---|---|
| Invar | 1.3912 | K93600 | X2NiCoMo18-8-5 | NK 36CT |
Chemical Composition Of Invar Welding Rod
| Grade | C | Mn | Si | P | S | Ni | Fe |
|---|---|---|---|---|---|---|---|
| Invar 36 | 0.05 max | 0.60 max | 0.35 max | 0.025 max | 0.025 max | 35.00 – 37.00 | Balance |
Invar Welding Rod Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|---|
| Invar 36 | 8.1 g/cm³ | 1430 °C (2600 °F) | MPa – 515 | MPa – 240 | 35 % |
Invar Welding Rods Sizes
| Rod Diameter (mm) | Rod Diameter (inch) | Typical Length (mm) |
|---|---|---|
| 2.0 | 5/64″ | 300 – 450 |
| 2.5 | 3/32″ | 300 – 450 |
| 3.15 | 1/8″ | 300 – 450 |
| 4.0 | 5/32″ | 300 – 450 |
| 5.0 | 3/16″ | 300 – 450 |
| 6.3 | 1/4″ | 300 – 450 |
Thickness Chart of Invar Welding Rod
| Rod Diameter (mm) | Approx. Weight per 100 Rods (kg) | Approx. Weight per Rod (g) | Approx. Weight per Meter (kg/m) |
|---|---|---|---|
| 2.0 | 1.6 – 1.8 | 16 – 18 | 0.025 – 0.028 |
| 2.5 | 2.5 – 2.8 | 25 – 28 | 0.049 – 0.053 |
| 3.15 | 4.8 – 5.2 | 48 – 52 | 0.079 – 0.085 |
| 4.0 | 8.5 – 9.0 | 85 – 90 | 0.126 – 0.132 |
| 5.0 | 13.0 – 14.0 | 130 – 140 | 0.196 – 0.210 |
| 6.3 | 18.0 – 20.0 | 180 – 200 | 0.282 – 0.314 |
Application Industries of Invar Welding Rod
Export Countries for Invar Welding Rod
- 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