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Bilal Nickel Alloys, based in Safat, Kuwait, stands out as a top manufacturer and supplier of Invar Bars, a unique nickel-iron alloy known for its remarkably low thermal expansion. Designed to maintain dimensional stability even with temperature changes, Invar Bars play a vital role in precision engineering, aerospace, and scientific fields. At Bilal Nickel Alloys, each Invar Bar is produced with rigorous quality control, ensuring they deliver consistent performance, strength, and reliability. With their impressive durability and resistance to deformation, Invar Bars are the go-to choice for industries that demand precision, accuracy, and structural integrity.
Invar Bar is mainly made up of 36–42% nickel, with the rest being iron, which contributes to its incredibly low thermal expansion rate. This alloy showcases moderate tensile strength, good fatigue resistance, and outstanding dimensional stability when subjected to thermal cycling. It also provides corrosion resistance, making it suitable for controlled environments. The blend of mechanical strength and minimal expansion ensures that Invar Bars keep their shape and performance across varying temperatures, making them perfect for precision components and critical structural applications where stability and reliability are essential.
| 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 % |
At Bilal Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Invar Bar in Safat, Kuwait, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Kuwait, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Invar Bars find extensive use in industries that require precise dimensional control. They are commonly found in aerospace components, precision instruments, optical devices, measuring tools, and mounts for scientific equipment. Additionally, they are utilized in electronic substrates, sensor supports, molds, and frames where minimal thermal expansion is vital. The alloy’s ability to maintain dimensional stability under fluctuating temperatures makes it ideal for telescope structures, die-casting molds, and specialized machinery. Bilal Nickel Alloys ensures that their Invar Bars meet the high standards needed for these demanding applications, reinforcing their reputation in the industry.
