Welcome to Maduka Metals, your trusted partner in Abuja for precision-engineered materials that stand up to Nigeria’s unique demands. We specialize in supplying high-quality Invar 36 bar and rod, a specialized alloy chosen for its exceptional stability in environments where even the slightest expansion or contraction can compromise an entire project. Our commitment is to provide local industries with reliable access to this critical material, backed by the expert knowledge and dependable service needed to ensure your success from the ground up.
Invar 36 is distinguished by its unique composition, primarily consisting of 36% nickel and 64% iron. This specific blend is the secret to its remarkable characteristic: an extremely low coefficient of thermal expansion. This means it barely changes size with temperature fluctuations, a property it maintains across a wide range of conditions. While it is not typically chosen for high-strength applications, it offers excellent ductility and machinability, making it a practical and reliable material to work with for its intended specialized purposes.
| 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 makes it indispensable in fields where precision is non-negotiable. You’ll find it at the heart of critical instruments like precision scales, telescope mounts, and laser measurement systems. It’s also essential in the aerospace and energy sectors for components in jet engines and LNG tanks. Closer to home, it plays a vital role in making molds for composite materials in advanced manufacturing, ensuring that the final products are produced with exacting accuracy and consistency.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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