Ojas Pipes and Tubes, based in Kolkata, India, is a leading manufacturer and supplier of high-quality Invar 42 Bars and Rods. Known for their dedication to precision engineering and superior materials, Ojas provides Invar 42 bars that are perfect for critical applications where minimal thermal expansion is a must. These bars are crafted in line with international standards and serve various industries, including aerospace, electronics, and scientific instrumentation. With a strong emphasis on durability, performance, and customization, Ojas Pipes and Tubes is a reliable partner for delivering Invar 42 products throughout India, ensuring top-notch quality and timely delivery.
Invar 42 Bars and Rods are primarily made up of 41–43% nickel, with the rest being iron. This nickel-iron alloy is known for its incredibly low coefficient of thermal expansion. Typically, the alloy boasts a tensile strength of about 500–750 MPa and a yield strength close to 275 MPa. Invar 42 offers excellent dimensional stability and good ductility, even at cryogenic temperatures. It melts at a range of 1425–1450°C and has a density of around 8.1 g/cm³. These characteristics make it an excellent choice for precision parts and assemblies where maintaining dimensional consistency is crucial.
| 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.
Invar 42 Bars and Rods find extensive use in industries that demand precise dimensional control, especially when temperatures fluctuate. They are key components in the manufacturing of electronic devices, CRT parts, thermostat rods, precision optical instruments, and hermetic seals in electronic packaging. In aerospace engineering, Invar 42 is utilized for structural components that require tight dimensional tolerances. Its low thermal expansion properties make it ideal for tooling, molds, and gauges. Ojas Pipes and Tubes offers Invar 42 products customized to meet rigorous specifications, ensuring reliable performance for clients in defense and scientific research.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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