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Jyoti Steels is a well-known Invar Bar manufacturer and supplier located in Mumbai, India, that offers high-performance material with exceptionally low thermal expansion. With quality, accuracy, and timely delivery at their core, Jyoti Steels serves various industries using stable and consistent materials for thermal-sensitive uses. Supported by state-of-the-art infrastructure and technical support, the company offers Invar Bars at international standards. Their dedication to quality and customer satisfaction establishes them as a reliable name in the specialty alloy industry in aerospace, electronics, and scientific applications.
Invar Bar consists mainly of Nickel (36%) and Iron (64%), with trace additions of elements such as Carbon (≤0.05%), Manganese (≤0.60%), and Silicon (≤0.40%). The alloy has a tensile strength of around 490–620 MPa, yield strength of 275 MPa, and elongation of around 30%. It possesses a very low coefficient of thermal expansion (approximately 1.2 x 10⁻⁶/°C), 8.1 g/cm³ density, and a melting point near 1430°C. The above properties ensure great dimensional stability, particularly with respect to changes in temperature, so that Invar Bar finds application in precision engineering.Invar Bar consists mainly of Nickel (36%) and Iron (64%), with trace additions of elements such as Carbon (≤0.05%), Manganese (≤0.60%), and Silicon (≤0.40%). The alloy has a tensile strength of around 490–620 MPa, yield strength of 275 MPa, and elongation of around 30%. It possesses a very low coefficient of thermal expansion (approximately 1.2 x 10⁻⁶/°C), 8.1 g/cm³ density, and a melting point near 1430°C. The above properties ensure great dimensional stability, particularly with respect to changes in temperature, so that Invar Bar finds application in precision engineering.
| 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 Jyoti Steels, we take pride in being the largest supplier, exporter, and manufacturer of Invar Bar in Mumbai, India, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the India, 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 Bar is widely applied where there is little need for thermal expansion and great dimensional stability. It is well suited for applications in precision devices, aerospace tooling, optical instruments, scientific apparatus, and cryogenic technology. The bar is also applied in electronics to components such as shadow masks, cathode ray tubes, and semiconductor supports. The thermal stability of Invar under fluctuating temperatures renders it a requirement in composite molds, clock pendulums, and laser system parts. Its stable performance and low coefficient of expansion guarantee long-term reliability in high-precision and thermally sensitive industrial applications.
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