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Ashraf Nickel Alloys stands out as a top manufacturer and supplier of Invar Bars in Riyadh, Saudi Arabia, providing high-quality solutions for industries that demand outstanding dimensional stability. Invar, a nickel-iron alloy famous for its remarkably low coefficient of thermal expansion (CTE), is designed for precision-critical applications like aerospace instruments, scientific equipment, cryogenic systems, and high-accuracy tooling. Our Invar bars are crafted to meet strict international standards, ensuring top-notch quality, durability, and machinability. Ashraf Nickel Alloys is a trusted name for delivering high-performance Invar products tailored to meet the toughest operational conditions, offering customers exceptional consistency, corrosion resistance, and precise tolerance control for mission-critical engineering tasks.
Invar bars are mainly made up of 64% iron and 36% nickel, along with small amounts of carbon, manganese, and silicon. This special blend gives them an ultra-low thermal expansion coefficient (1.2 × 10⁻⁶ /°C), ensuring they remain dimensionally stable across a wide temperature range. Invar bars boast a tensile strength of 490–620 MPa, along with good ductility and machinability, making them ideal for complex components. They feature moderate hardness, high toughness, and excellent resistance to thermal shock and fatigue. Their ability to maintain size stability under temperature fluctuations makes Invar a go-to choice for precision tools, aerospace fixtures, and scientific instruments.
| 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 Ashraf Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Invar Bar in Riyadh, Saudi Arabia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Saudi Arabia, 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.
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Invar bars find extensive use in aerospace, scientific, and industrial engineering applications where minimal dimensional change is essential. They are frequently utilized in precision measuring instruments, cryogenic equipment, and optical devices. The tooling and mold-making industries depend on Invar for its dimensional stability during thermal cycling, while the aerospace and defense sectors leverage it for manufacturing satellite components and other critical applications.
