Nestled in the heart of Kinshasa, Sadiki Metals stands as a trusted partner for industry, bringing specialized material solutions to the vibrant heart of Congo. We take pride in our role as a dedicated manufacturer and supplier of Invar bar and rod, providing local and international clients with a critical component known for its exceptional stability. Our commitment is to deliver not just a product, but a foundation of reliability for projects where precision is non-negotiable, supporting the growth and innovation happening right here in our community.
Invar is a unique nickel-iron alloy, celebrated for its remarkably low coefficient of thermal expansion. This means it barely expands or contracts with changes in temperature, a property that sets it apart from common steels. This inherent stability is its greatest mechanical strength. The bars and rods we produce are engineered to maintain their shape and dimensions with unwavering consistency, even when subjected to significant temperature fluctuations, ensuring long-term structural integrity where other materials would fail.
| 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 unique nature of Invar makes it indispensable in fields where even microscopic dimensional changes are unacceptable. You’ll find it essential in precision instruments, the molds for crafting large composite aircraft wings, and in the demanding environments of liquefied natural gas tanks. It’s also the material of choice for critical components in telecommunications and aerospace, ensuring that satellites and telescopes maintain their exact alignment. Essentially, any application that cannot afford to be compromised by heat relies on the steadfast character of Invar.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sadiki Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kinshasa, Congo
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