Dhruv Metals, located in Hyderabad, India, stands out as a leading manufacturer and supplier of top-notch Invar Bars and Rods, earning the trust of industries that need precision and dimensional stability. These Invar Bars and Rods are renowned for their remarkably low coefficient of thermal expansion, making them perfect for applications where even the slightest thermal distortion can be a dealbreaker. At Dhruv Metals, we craft our Invar Bars and Rods to meet rigorous international standards, guaranteeing outstanding performance in critical settings. Thanks to our cutting-edge production methods and strict quality control, we consistently deliver reliable Invar products to various sectors, including aerospace, electronics, cryogenics, and scientific instrumentation.
Made up of about 64% iron and 36% nickel, Invar Bars and Rods possess a unique ability to maintain their dimensions across a wide temperature range. This alloy showcases impressive thermal fatigue resistance, moderate strength, and good machinability. Its mechanical properties include high toughness, minimal thermal expansion, and stable performance in both cryogenic and elevated temperatures. These traits make Invar an excellent choice for high-precision engineering components.
| Standards : | ASTM F1684, ASME SF1684 |
| Dimensions : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Wire : | Thickness starting from 0.05mm |
| Round bar size : | Diameter: 3-~800mm |
| Hex Bar size : | 2-100mm A/F |
| Flat bar size : | Thickness: 2 -100mm / Width: 10 to 500mm |
| Square bar size : | 4 to 100mm |
| Rectangular Bars Size : | 33 x 30mm to 295 x 1066mm |
| Hollow Bar : | 32mm OD x 16mm ID to 250mm OD x 200mm ID |
| Tolerance : | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Finish : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Grade | C | Mn | Si | S | Fe | Ni | Cr | P | Mo | Co |
| Invar 36 | 0.10 max | 0.06 max | 0.35 max | 0.025 max | Rem | 35-38 | 0.50 max | 0.025 max | 0.50 max | 1.0 max |
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Psi – 71,000 , MPa – 490 | Psi – 35,000 , MPa – 240 | 42 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Invar 36 | 1.3912 | K93600 |
Yes, for Invar bar welding, specialized consumables like Invar welding rods, Invar electrodes, or Ni-based filler metals such as ERNi-1 or ERNiCrMo-3 are commonly used to ensure optimal bonding and minimize thermal expansion issues.
Yes, Invar bar and rod can be welded, typically using TIG or MIG welding techniques. However, it requires careful control of heat to avoid distortion due to its low expansion properties.
Invar rods, primarily composed of iron and nickel, are generally resistant to galvanic corrosion. However, when paired with more reactive metals, they may experience corrosion if exposed to electrolyte solutions.
Invar Bars and Rods find their way into applications that require minimal thermal expansion, such as optical instruments, satellite components, precision measuring tools, and semiconductor manufacturing equipment. In the aerospace sector, they are utilized for composite molds and structural components that face temperature variations. Invar is also crucial in cryogenic storage systems and electronics where thermal stability is vital. Dhruv Metals provides Invar Bars and Rods tailored to meet the specific needs of these industries, ensuring exceptional reliability, accuracy, and long-lasting stability in high-precision environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Dhruv Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hyderabad , India
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