Luois Metals, a top-notch manufacturer and supplier based in Houston, USA, specializes in high-quality Invar 42 Bars and Rods, designed for outstanding dimensional stability and thermal expansion control. Known for their remarkably low coefficient of thermal expansion, these bars and rods are crafted with precision to meet international standards, ensuring a superior surface finish, accurate dimensions, and a long lifespan. Invar 42 Bars and Rods from Luois Metals are perfect for critical applications in aerospace, precision instruments, scientific equipment, electronics, and glass-to-metal sealing industries, where reliability, stability, and resistance to temperature-induced deformation are key.
These Invar 42 Bars and Rods are made up of about 42% nickel, with the rest being iron, along with carefully controlled trace elements that boost stability and performance. This unique blend gives them an extremely low thermal expansion across a wide temperature range, while still maintaining good mechanical strength, ductility, and toughness. Mechanically, they provide excellent tensile and yield strength, along with consistent dimensional stability during thermal cycling, making them ideal for precision engineering applications.
| 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 aerospace components, precision measuring instruments, optical and scientific devices, semiconductor manufacturing, and glass-to-metal seals. They are also utilized in structural supports, vibration-sensitive equipment, and temperature-critical assemblies where minimal expansion or contraction is vital. Their combination of low thermal expansion, strength, and stability ensures accurate performance in high-precision applications. Luois Metals stands behind the superior quality, reliability, and long-term durability of its Invar 42 Bars and Rods, making them the go-to choice for industries that require precise and stable materials under varying temperature conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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