For over a decade, Junaid Metals has stood as a trusted manufacturer and supplier in the heart of Manama, Bahrain, specializing in high-quality precision materials. We take particular pride in our expertise with Invar Bar and Rod, a unique alloy known for its exceptional stability. Our team is dedicated to providing reliable, on-time solutions for clients across the Middle East and beyond, ensuring your projects are built on a foundation of uncompromising quality and technical excellence.
The remarkable quality of Invar comes from its specific composition, primarily a blend of 64% iron and 36% nickel. This precise配方 gives the alloy its defining characteristic: an extremely low coefficient of thermal expansion. This means our bars and rods barely change size with temperature fluctuations. While not chosen for high strength, Invar offers good ductility and machinability, making it an ideal material where dimensional integrity is the absolute priority, even in demanding environments.
| 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.
The exceptional stability of Invar Bar and Rod makes it indispensable in fields where even microscopic expansion or contraction is unacceptable. You will find it at the core of precision instruments, critical components in aerospace and aviation systems, and large-scale structures like radio telescopes and pendulum rods in clocks. It is also vital in the energy sector for LNG tankers and molds for composite aerospace parts, ensuring unwavering accuracy and long-term reliability where other materials would falter.
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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