Semih Metals stands out as a top-notch manufacturer and supplier located in Istanbul, Turkey, with a focus on high-performance metal alloys like Invar 42 Bar and Rod. With years 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 high-quality 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. In terms of mechanical properties, Invar 42 boasts a tensile strength of around 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 wide temperature range, making it perfect for precision applications.
| Chemical Requirements | HT1 | HT2 | |||
| Copper | 56.0 – 60.0% | 56.0 – 61.0% | |||
| Lead | 0.20 to 1.50% | 0.50 to 1.50% | |||
| Iron | 0.20 to 1.25% | 0.20 to 1.50% | |||
| Tin | 0.20 to 1.0% | 1.0% max | |||
| Aluminum | 0.2% max | 0.30 to 2% | |||
| Manganese | 0.25 – 2.0% | 0.50-2.0% | |||
| Total Imp. | 0.50% max | 0.50% max | |||
| Zinc | Remainder | Remainder |
| Condition | Size | T.S. MPa | EL% Min | T.S. MPa | EL% Min |
| As manufactured | All Size | 430 min | 20.00% | 460 min | 20.00% |
| Cold-worked & Stress | 10-40 | 480 min | 12.00% | 520 min | 12.00% |
| Relieved | 40 above | 500 min | 15.00% |
Yes, high tensile brass rods can be welded, but the process requires specific techniques. Methods like brazing or TIG welding are commonly used, with proper precautions to prevent zinc loss and cracking.
Yes, high tensile brass rods are highly suitable for machining. Their excellent machinability, durability, and resistance to wear make them ideal for precision components in industries like automotive, electrical, and plumbing.
High tensile brass rods offer excellent strength and moderate flexibility, making them bendable under controlled conditions. However, excessive force or improper techniques may cause cracking, so precision and care are essential.
Invar 42 Bar and Rod are commonly utilized in industries where maintaining dimensional stability and minimizing thermal expansion are crucial. 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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