Nestled in the heart of Kinshasa, Congo, Sadiki Metals stands as a trusted partner for industry, dedicated to providing exceptional materials for the most demanding projects. We take pride in our role as a manufacturer and supplier of Invar 42 bar and rod, offering locally sourced, precision-engineered solutions. Our commitment is to deliver not just metal, but reliability and partnership to engineers and fabricators across the region who require unwavering stability and performance from their materials.
Invar 42 is a unique nickel-iron alloy known for its remarkable stability. Its composition, typically 42% nickel with the balance being iron, gives it an exceptionally low coefficient of thermal expansion. This means it barely expands or contracts with changes in temperature. Mechanically, it offers good tensile strength and yield strength, along with excellent ductility and malleability, making it well-suited for machining and fabrication into precise components where dimensional integrity is non-negotiable.
| Standards : | ASTM F30, ASME SF30 |
| 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 | Cu | Mo |
| Invar 42 | 0.1 max | 0.6 max | 0.35 max | 0.025 max | Balance | 35.0 – 37.0 | 0.5 max | 0.025 max | 0.5 max | 0.5 max | 0.5 max |
| Yield Strength (0.2%Offset) | Tensile Strength | Elongation | Hardness |
| Ksi – 36 , MPa – 248 | Ksi – 71 , MPa – 490 | 40 % | 40 |
| STANDARD | WERKSTOFF NR. | UNS |
| Invar 42 | 1.3917 | K94100 |
Yes, laser welding can be used for Invar 42 bars. Its low thermal expansion properties make it suitable for precision welding, though attention is needed to manage heat input and distortion.
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.
The unique property of Invar 42 makes it indispensable in fields where even microscopic size changes are unacceptable. You’ll find it essential in precision instruments, the aerospace industry for satellite and telescope components, and in the molds for crafting high-quality glass and composite materials. It’s also critical in telecommunications for waveguides and in energy sectors for LNG tanks, ensuring that structures maintain their exact dimensions despite experiencing extreme temperature fluctuations, guaranteeing long-term accuracy and performance.
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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