Semih Metals stands out as a premier manufacturer and supplier located in Istanbul, Turkey, with a focus on high-performance metal alloys like Invar 42 Bar and Rod. With decades of expertise in the metallurgical field, Semih Metals provides precision-engineered materials that meet the rigorous demands of industries such as aerospace, electronics, and cryogenics. The company prides itself on its commitment to quality, innovation, and customer satisfaction, offering both standard and custom specifications of Invar 42 products to clients around the globe. Thanks to cutting-edge manufacturing techniques and strict quality control measures, Semih Metals has built a solid reputation as a reliable source for top-notch Invar 42 solutions.
Invar 42, or UNS K94100, is an iron-nickel alloy that contains about 41–43% nickel, with the remainder being iron, along with small amounts of carbon, manganese, and silicon. It’s well-known for its remarkably low coefficient of thermal expansion. On the mechanical side, Invar 42 boasts a tensile strength of roughly 450–700 MPa, a yield strength of about 275 MPa, and an elongation range of 30–45%, depending on its temper and treatment. This alloy maintains excellent dimensional stability over a broad temperature range, making it perfect for precision applications.
| Specifications | ASTM B187, ASTM B301 / ASME SB187, SB301 |
| Range | 3.17 MM TO 350 MM DIA |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc. |
| Material | Copper |
| ETP GRADE | |
|---|---|
| Copper Hex Bar | ø 8 mm to 110 mm |
| Copper Round | ø 7 mm to 120 mm |
| Copper Square Bar | 10*10 mm to 90*90 mm |
| Electrical Conductivity: – (% IACS) | 98.5% min |
| Standards | BS EN 13601:2013, IS: 191, 1897 & 613 |
| Specifications | Cu : 99.90%, 02<400ppm |
| Copper Round Rod C101 | |
|---|---|
| 6.3mm (1/4″) | 38.1mm (1 1/2″) |
| 9.5mm (3/8″) | 30mm |
| 12.7mm (1/2″) | 25.4mm (1″) |
| 12mm | 25mm |
| 10mm | 20mm |
| 16mm | 19mm (3/4 |
| Diameter in mm | Weight in Kg/m |
|---|---|
| 8 | 0,447 |
| 6 | 0,252 |
| 9,5 | 0,631 |
| 12 | 1,007 |
| 11 | 0,846 |
| 60 | 25,164 |
| 12,5 | 1,092 |
| 14 | 1,370 |
| 42 | 12,330 |
| 13 | 1,181 |
| 70 | 34,251 |
| 16 | 1,789 |
| 80 | 44,736 |
| 38 | 10,094 |
| 35 | 8,563 |
| 50 | 17,475 |
| 40 | 11,184 |
| 20 | 2,796 |
| 19 | 2,523 |
| 22 | 3,383 |
| 28 | 5,480 |
| 30 | 6,291 |
| 25 | 4,369 |
| 32 | 7,158 |
| 45 | 14,155 |
| Molecular Weight | 63.55 |
|---|---|
| Boiling Point | 2567 °C |
| Melting Point | 1083.4 °C |
| Density | 8.96 g/cm3 |
| Electrical Resistivity | 1.678 microhm-cm @ 20 °C |
| Appearance | Reddish Metal |
| Young’s Modulus | 110–128 GPa |
| Solubility in H2O | N/A |
| Heat of Fusion | 3.11 Cal/gm mole |
| Electronegativity | 1.9 Paulings |
| Poisson’s Ratio | 0.34 |
| Heat of Vaporization | 72.8 K-cal/gm atom at 2567 °C |
| Tensile Strength | N/A |
| Specific Heat | 0.092 Cal/g/K @ 25 °C |
| Thermal Expansion | (25 °C) 16.5 µm·m-1·K-1 |
| Thermal Conductivity | 4.01 W/cm/K @ 298.2 K |
| Vickers Hardness | 369 MPa |
Yes, Copper Bars and Rods can be susceptible to galvanic corrosion when in contact with dissimilar metals, particularly in the presence of moisture or electrolytes. Proper insulation helps prevent this.
Yes, Copper Bars and Rods are fully recyclable. The material retains its properties after recycling, making it an eco-friendly choice for sustainable industrial applications and reducing environmental impact.
Yes, Copper Bars and Rods can be used for natural gas applications. They offer excellent corrosion resistance and conductivity, making them suitable for gas systems, provided they are properly maintained.
Invar 42 Bar and Rod are extensively utilized in sectors where dimensional stability and minimal thermal expansion are essential. Typical applications include electronic components, telecommunications, aerospace instrumentation, precision measurement devices, and cryogenic engineering. The alloy’s stability across varying temperatures makes it ideal for lead frames, glass-to-metal seals, and shadow masks in CRTs. It’s also employed in tooling for aerospace composite fabrication and high-precision instruments like gyroscopes and laser components. Invar 42 is particularly preferred in environments where thermal fluctuations could jeopardize structural integrity or precise alignments, ensuring long-lasting reliability and accuracy.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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