Phehlukwayo Metal, a top-notch manufacturer and supplier located in Cape Town, South Africa, specializes in high-quality Invar Bars and Rods that are perfect for precision applications where minimal thermal expansion is key. These products are made from premium Invar alloy, which guarantees excellent dimensional stability even when temperatures fluctuate. Phehlukwayo Metal offers Invar Bars and Rods in a variety of sizes and specifications to cater to industries like aerospace, electronics, instrumentation, and cryogenics. Renowned for their reliability, durability, and outstanding thermal performance, these Invar products are just what you need for precision engineering and components sensitive to temperature changes.
Invar Bars and Rods are primarily made up of 64% iron and 36% nickel, giving them an incredibly low coefficient of thermal expansion. This alloy keeps its dimensional accuracy even with temperature shifts while also providing good ductility, toughness, and machinability. With a typical tensile strength of about 490 MPa and remarkable thermal stability, Invar Bars and Rods are especially well-suited for precision instruments and components that experience temperature variations, where maintaining shape and accuracy is essential.
| 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.
These Invar Bars and Rods find their place in a range of industries, including aerospace, electronics, optics, and metrology. They’re commonly used in the production of precision instruments, optical devices, cryogenic components, and scientific measuring tools. Thanks to Invar’s minimal thermal expansion, it’s the go-to choice for tooling, gauges, and frames where dimensional stability is crucial. You’ll also find it in thermostat rods, laser housings, and satellite components. Its unique characteristics make Invar a favored material for applications that demand high accuracy and stability, even when temperatures change.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phehlukwayo Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Cape Town, South Africa
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