Mourad Metals is a trusted manufacturer and supplier located in Tunis, Tunisia, specializing in high-quality Invar Bars and Rods tailored for precision-driven industries. The company prides itself on delivering products that meet international quality standards, backed by cutting-edge manufacturing techniques and rigorous inspection protocols. Mourad Metals caters to various sectors, including aerospace, engineering, electronics, and scientific research, ensuring consistent material performance, customized specifications, and prompt delivery. With a strong emphasis on durability, precision, and customer satisfaction, Mourad Metals has positioned itself as a reliable source for Invar Bar and Rod solutions in both local and global markets.
Invar Bars and Rods are primarily made up of about 36% nickel and 64% iron, a blend that results in remarkably low thermal expansion. This distinctive composition offers outstanding dimensional stability when subjected to temperature variations. On the mechanical side, Invar provides moderate tensile strength, good toughness, and high ductility, making it easy to fabricate and machine. The alloy exhibits consistent mechanical behavior under thermal stress and has a relatively low elastic modulus, which makes it ideal for precision components that require stable dimensions and dependable mechanical performance.
| 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 extensive use in applications where precise dimensional control is crucial. Common uses include aerospace structures, precision measuring instruments, optical equipment, and scientific devices. They are frequently utilized in clock pendulums, seismic frames, thermostats, satellite components, and composite mold tooling. Invar is also employed in electronics, cryogenic systems, and research equipment, where temperature fluctuations could impact accuracy. Its remarkable thermal stability guarantees long-term performance, precision, and reliability in demanding industrial and technological settings.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Mourad Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Tunis, Tunisia
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