Isis Metals stands out as a leading manufacturer and supplier of Invar Bars and Rods, proudly based in Manila, Philippines. They specialize in high-quality nickel-iron alloy products that are renowned for their remarkably low coefficient of thermal expansion and impressive dimensional stability. Each Invar Bar and Rod is meticulously crafted to ensure they maintain their size and shape, even when temperatures fluctuate. This makes them perfect for precision instruments and critical industrial applications. Isis Metals is committed to meeting rigorous international quality standards, providing materials that are not only reliable and durable but also high-performing. These products find their place in various industries, including aerospace, electronics, instrumentation, and precision engineering, where stability and accuracy are paramount under changing thermal conditions.
The composition of Invar Bars and Rods primarily includes nickel (36%) and iron (the remainder), with a few trace elements added to boost performance and stability. This unique blend results in an impressively low thermal expansion rate, excellent dimensional stability, and solid mechanical strength. In terms of mechanics, Invar boasts a tensile strength of around 500–600 MPa, along with good ductility and toughness. These characteristics make Invar Bars and Rods ideal for applications that demand minimal thermal expansion and consistent structural integrity.
| 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 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Invar 36 | 1.3912 | K93600 |
Yes, for Invar bar welding, specialized consumables like Invar welding rods, Invar electrodes, or Ni-based filler metals such as ERNi-1 or ERNiCrMo-3 are commonly used to ensure optimal bonding and minimize thermal expansion issues.
Yes, Invar bar and rod can be welded, typically using TIG or MIG welding techniques. However, it requires careful control of heat to avoid distortion due to its low expansion properties.
Invar rods, primarily composed of iron and nickel, are generally resistant to galvanic corrosion. However, when paired with more reactive metals, they may experience corrosion if exposed to electrolyte solutions.
Invar Bars and Rods are extensively utilized in sectors that require high dimensional stability and resistance to thermal expansion. You’ll find them in precision instruments, scientific equipment, measuring devices, aerospace components, electronic assemblies, and optical systems. They’re also essential in precision tooling, clocks, and specialized machinery where maintaining exact dimensions amid temperature changes is crucial. Isis Metals delivers Invar Bars and Rods that promise reliable performance, a long service life, and consistent quality for the most demanding industrial, scientific, and high-precision engineering needs.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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