Starc Metals, located in Canberra, Australia, stands out as a top manufacturer and supplier of high-quality Invar bars and rods. Known for their precision engineering and reliability, they cater to industries that need materials with outstanding dimensional stability, even when temperatures change. Each Invar product is carefully crafted to meet strict standards, ensuring they perform consistently in critical applications. With a strong focus on excellent customer service, Starc Metals offers customized solutions to fit a variety of industrial needs. Whether it’s aerospace or scientific instruments, their expertise and extensive inventory make them a go-to partner for clients looking for durable, thermally stable Invar bars and rods.
Invar bars and rods are made up of 36% nickel and 64% iron, which gives them their distinctive low coefficient of thermal expansion. This special composition allows Invar to keep its shape even when temperatures fluctuate. On the mechanical side, Invar provides moderate strength and superb machinability, making it ideal for precision engineering tasks. Its toughness and ability to resist deformation under stress guarantee long-lasting reliability in critical applications. Plus, Invar’s magnetic properties can be adjusted through heat treatment, which enhances its versatility for scientific, aerospace, and industrial applications that demand high performance.
| 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 find their place in industries that require precise dimensional stability. In aerospace engineering, they serve as dependable components for instruments and structural elements that face temperature changes. Scientific and laboratory equipment often relies on Invar to ensure accuracy in measurement devices. Tooling and precision machinery benefit from its low thermal expansion, which helps minimize distortion during operation. Invar is also utilized in optical systems, metrology, and electronics, where exacting performance standards are essential.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Starc Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Canberra, Australia
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