Junaid Metals, based in the commercial heart of Manama, Bahrain, is your trusted local source for precision-engineered materials. We take pride in supplying high-quality Invar 36 bar and rod, a specialty alloy engineered for exceptional stability. For projects where even the smallest thermal expansion could compromise integrity, our Invar 36 offers a reliable and effective solution, backed by our commitment to supporting the region’s growing industrial and technological sectors with expertise and dependable service.
The exceptional value of Invar 36 lies in its unique composition, primarily Nickel (36%) and Iron, which grants it a remarkably low coefficient of thermal expansion. This means it barely changes size with temperature fluctuations, maintaining its dimensions with incredible consistency. Mechanically, it offers good tensile strength and yield strength, along with impressive ductility and malleability, making it a versatile material that can be machined and formed to meet the precise demands of specialized applications.
| 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, Invar 36 bar and rod can be welded, but it requires special care due to its low expansion properties. Proper welding techniques, such as TIG or MIG, are recommended.
Yes, specific welding consumables for Invar 36 bar and rod include Invar 36 electrodes, TIG rods, and MIG wires. These materials ensure proper fusion and minimize thermal expansion issues during welding.
Invar 36 rod, primarily composed of iron and nickel, is not highly susceptible to galvanic corrosion. However, when exposed to more noble metals in corrosive environments, it can experience some galvanic effects.
The unique stability of Invar 36 bar and rod makes it indispensable in fields where precision is everything. You will find it critical in aerospace and aviation for components like laser components and antenna mounts, and in precision instruments such as optical devices and clock pendulums. It’s also essential in liquefied natural gas (LNG) carriers for transporting super-cooled gases and in various molds and tools within the electronics industry, ensuring the highest levels of accuracy are consistently maintained.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Junaid Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manama, Bahrain
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