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Fajar Metals is a reliable manufacturer and supplier of high-precision Invar Bars, located in Jakarta, Indonesia. Invar, a nickel-iron alloy celebrated for its remarkably low coefficient of thermal expansion, is perfect for applications that demand outstanding dimensional stability when temperatures fluctuate. We produce our Invar Bars using top-notch materials and stringent manufacturing controls to meet the high standards of industries like aerospace, cryogenics, tooling, electronics, and scientific instrumentation. Adhering to international standards such as ASTM F1684, Fajar Metals offers Invar Bars in a variety of sizes, shapes, and heat-treated conditions to support critical components that require unparalleled thermal stability.
Invar Bars are primarily made up of 64% iron and 36% nickel, which gives this alloy its distinctive low thermal expansion (~1.2 x 10⁻⁶/°C between 20–100°C). It boasts moderate tensile strength (450–620 MPa), high ductility, and exceptional dimensional stability across a broad temperature range. Invar is non-magnetic at room temperature but becomes magnetic at lower temperatures. Fajar Metals provides Invar Bars in either annealed or cold-worked conditions, featuring excellent surface finishes and precise dimensional tolerances, making them ideal for high-precision tooling, gauges, and structural applications in thermally sensitive environments.
| 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 Fajar Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Invar Bar in Jakarta, Indonesia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Indonesia, 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 situations where maintaining dimensional accuracy amid thermal changes is crucial. In the aerospace sector, they are utilized in satellite structures, optical systems, and avionics components. Cryogenic applications rely on Invar for support structures and containment due to its resistance to thermal contraction. The tooling and die industries employ Invar Bars for molds, fixtures, and jigs that require precise tolerances. In the electronics and telecommunications fields, they are perfect for shadow masks, sealing frames, and thermostatic bimetals. Fajar Metals is committed to delivering Invar Bars that meet the highest standards for performance and reliability.
