Semih Metals, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of high-performance metal alloys, particularly **Invar 42 Bar and Rod**. With years of expertise in the metallurgical field, Semih Metals is dedicated to providing precision-engineered materials that meet the rigorous demands of industries like 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 Bar and Rod to clients around the globe. Thanks to advanced manufacturing techniques and stringent quality control, Semih Metals has earned a strong reputation for reliability and excellence in Invar alloy solutions.
**Invar 42 Bar and Rod** are made up of roughly 41–43% nickel, with the remainder being iron, along with small amounts of carbon, manganese, and silicon. This iron-nickel alloy is particularly renowned for its remarkably low coefficient of thermal expansion. In terms of mechanical properties, Invar 42 Bar and Rod boast tensile strengths between 450 and 700 MPa, a yield strength of about 275 MPa, and elongation rates ranging from 30% to 45%, depending on their condition and heat treatment. These characteristics make the material perfect for maintaining dimensional stability across a wide temperature range, especially in high-precision engineering settings.
Incoloy 825 Material Specification: ASTM B425/ ASME SB425 Inco 825
Grade: Inconel 600 (UNS N06600, Alloy 600, 2.4816), Inconel 601 (UNS N06601, Alloy 601, 2.4851), ASTM B425 Inconel 625 (UNS N06625, Alloy 625, 2.4856), Inconel 800 (UNS N08800, Alloy 800, 1.4876)
Form: Round, Square, Hex (A/F), Bush, Rectangle, Flat, Billet, Ingot, Forging, PSQ Bar, Wire Rod, Wire (Coil Form), Wire-mesh etc.
Size Range: 15NB to 150NB In manufacturing process: Cold drawn/ Extruded
Length: 100 mm To 3000 mm Long & Above
Diameter (Size) : Metric M6 to M48, Inches – 1/4’’ to 2’’
Tolerance : H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements
Finish : Cold Drawn, Shot Blast & Drawn, 240 Grit Belt Polished, Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, High Polished
Condition : Cold Drawnd Polished Cold Drawn Centreless Ground & Polished, Threading
Surface : Hot Rolled Pickled or Sand Blasting Finished, Cold Drawn, Bright, Polished, Hairline
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| 825 | 0.05 max | 1.00 max | 0.5 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 38.00 – 46.00 | 19.50 – 23.50 | 0.02 max | 0.06 – 1.20 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NA 16 | ЭП703 | NFE30C20DUM | NiCr21Mo | XH38BT |
| Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr |
|---|---|---|---|---|---|---|---|---|
| 3mm | 0.017 | 0.055 | 20mm | 0.753 | 2.470 | 3″ | 10.900 | 35.762 |
| 1/8″ | 0.019 | 0.062 | 22mm | 0.908 | 2.979 | 3-1/4″ | 12.800 | 41.996 |
| 5/32″ | 0.029 | 0.095 | 7/8″ | 0.926 | 3.038 | 3-1/2″ | 14.850 | 48.772 |
| 4mm | 0.030 | 0.098 | 24mm | 1.080 | 3.543 | 3-3/4″ | 17.001 | 55.780 |
| 3/16″ | 0.043 | 0.141 | 25mm | 1.180 | 3.871 | 4″ | 19.306 | 63.340 |
| 5mm | 0.047 | 0.154 | 1″ | 1.210 | 3.970 | 4-1/4″ | 21.908 | 72.249 |
| 7/32″ | 0.058 | 0.190 | 26mm | 1.271 | 4.170 | 4-1/2″ | 24.4487 | 80.340 |
| 6mm | 0.068 | 0.223 | 27mm | 1.368 | 4.490 | 4-3/4″ | 27.366 | 90.249 |
| 1/4″ | 0.076 | 0.249 | 1-1/8″ | 1.534 | 5.033 | 5″ | 30.461 | 99.940 |
| 7mm | 0.091 | 0.298 | 30mm | 1.691 | 5.548 | 5-1/2″ | 36.690 | 121.000 |
| 5/16″ | 0.118 | 0.387 | 1-1/4″ | 1.924 | 6.349 | 6″ | 43.860 | 143.900 |
| 8mm | 0.120 | 0.398 | 32mm | 1.894 | 6.314 | 6-1/2″ | 51.093 | 167.630 |
| 9mm | 0.152 | 0.498 | 1-3/8″ | 2.303 | 7.550 | 7″ | 59.432 | 196.000 |
| 3/8″ | 0.170 | 0.557 | 35mm | 2.390 | 7.553 | 7-1/2″ | 68.226 | 225.000 |
| 10mm | 0.189 | 0.620 | 36mm | 2.438 | 7.999 | 8″ | 77.586 | 254.55 |
| 11mm | 0.228 | 0.748 | 38mm | 2.792 | 8.903 | 10″ | 121.048 | 397.140 |
| 7/16″ | 0.232 | 0.761 | 1-1/2″ | 2.715 | 8.951 | |||
| 12mm | 0.271 | 0.889 | 40mm | 3.009 | 9.872 | |||
| 1/2″ | 0.303 | 0.994 | 1-5/8″ | 3.200 | 10.449 | |||
| 13mm | 0.318 | 1.043 | 1-3/4″ | 3.712 | 12.179 | |||
| 14mm | 0.368 | 1.207 | 45mm | 3.807 | 12.555 | |||
| 9/16″ | 0.383 | 1.256 | 1-7/8″ | 4.260 | 13.977 | |||
| 15mm | 0.424 | 1.391 | 48mm | 4.330 | 14.205 | |||
| 5/8″ | 0.473 | 1.551 | 50mm | 4.698 | 15.414 | |||
| 16mm | 0.481 | 1.578 | 2″ | 4.848 | 15.906 | |||
| 17mm | 0.543 | 1.791 | 2-1/8″ | 5.475 | 17.963 | |||
| 11/16″ | 0.573 | 1.880 | 2-1/4″ | 6.135 | 20.128 | |||
| 18mm | 0.610 | 2.001 | 60mm | 6.768 | 22.205 | |||
| 3/4″ | 0.682 | 2.237 | 2-3/8″ | 6.838 | 22.435 | |||
| 2-1/2″ | 7.576 | 24.856 | ||||||
| 2-5/8″ | 8.354 | 27.409 | ||||||
| 2-3/4″ | 9.169 | 30.083 |
Yes, Incoloy 825 Bars and Rods are highly corrosion-resistant, particularly against acids like sulfuric and phosphoric acid. Their nickel, iron, and molybdenum composition ensures excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
Yes, Incoloy 825 Bars and Rods can be customized in size and length to meet specific application requirements. They are available in various dimensions, ensuring versatility for diverse industries.
Incoloy 825 Bars and Rods perform exceptionally well in high-temperature environments, maintaining strength and stability. They exhibit excellent resistance to oxidation and scaling at elevated temperatures.
You’ll find **Invar 42 Bar and Rod** utilized in various industries where it’s crucial to maintain dimensional accuracy despite temperature changes. They play a vital role in the production of electronic components, semiconductor tooling, telecommunications hardware, aerospace instrumentation, and cryogenic systems. Specific uses include glass-to-metal seals, lead frames, precision measuring devices, and components for satellites and optical systems. Thanks to their thermal stability, Invar 42 Bar and Rod are also used in composite tooling for aircraft manufacturing and in scientific instruments.






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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