Chuck Metals is a reputable manufacturer and supplier based in Singapore, Pulau Ujong, specializing in high-quality Invar Bars and Rods tailored to meet a variety of industrial needs. Our Invar products are celebrated for their outstanding dimensional stability across a broad temperature range, meticulously crafted to deliver top-notch performance in critical applications. With a strong focus on quality, durability, and prompt delivery, Chuck Metals caters to industries such as aerospace, electronics, instrumentation, and cryogenics. We offer our Invar Bars and Rods in a range of sizes and specifications, ensuring they perfectly fit our customers’ unique requirements while complying with international quality standards.
Invar Bars and Rods are primarily made up of about 64% iron and 36% nickel, along with trace amounts of carbon, manganese, and silicon. This distinctive blend gives Invar an incredibly low coefficient of thermal expansion. On the mechanical side, Invar boasts a tensile strength of around 490 MPa, a yield strength of 240 MPa, and impressive ductility with an elongation of 35%. It also exhibits good toughness, moderate hardness, and maintains stability across varying temperatures, making it an excellent choice for applications that demand precision in dimensional stability.
| 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 extensive use in industries where minimal thermal expansion is essential. In aerospace, they are utilized in precision instruments, engine components, and structural parts. The electronics and telecommunications sectors rely on them for shadow masks, CRTs, and high-precision measuring devices. They play a crucial role in scientific instruments, cryogenic vessels, and laser systems. Additionally, Invar is favored in tooling for composite molding and precision optical devices, where maintaining dimensional stability amid temperature changes is key to ensuring performance and reliability.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chuck Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Singapore, Singapore
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