Semih Metals, based in Istanbul, Turkey, stands out as a trusted manufacturer and supplier of Hastelloy C276 forgings, crafted for outstanding performance in extremely corrosive settings. With a commitment to precision and durability, Semih Metals produces forged components that adhere to rigorous international standards across various industries, including chemical processing, marine, pollution control, and power generation. Their expertise in specialty alloys guarantees that Hastelloy C276 forgings deliver the strength, corrosion resistance, and longevity needed for critical applications.
Hastelloy C276 is a nickel-molybdenum-chromium alloy, enhanced with iron and a touch of tungsten, specifically designed to endure strong oxidizers and reducing agents. Its typical makeup features around 57% nickel, 16% molybdenum, 15.5% chromium, 5% iron, and 3.5% tungsten. This alloy boasts impressive resistance to pitting, crevice corrosion, and stress corrosion cracking. In terms of mechanical properties, C276 forgings show tensile strengths ranging from 690 to 785 MPa, yield strengths between 283 and 365 MPa, and elongation values of 40 to 50%, offering both strength and flexibility in challenging environments.
Specifications ASTM B564 / ASME SB564
Flat bar blocks up to 27″ width and 15,000 lbs.
Cylinders and sleeves up to 50″ maximum O.D. and 65″ maximum length
Discs and hubs up to 50″ diameter and 20,000 lbs.
Rolled, hand forged or mandrel forged rings up to 84″ maximum O.D. and 40″ maximum length
Rounds, shafts and step shafts up to 144″ maximum length and 20,000 lbs.
Grades Hastelloy C276 Forging UNS (N10276), DIN (2.4819)
ISO 9725
| Grade | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr | W | V |
| Hastelloy C276 | Balance | 0.01 max | 15–17 | 1.0 max | 0.08 max | 4–7 | 0.04 max | 0.03 max | 2.5 max | 14.5–16.5 | 3–4.5 | 0.35 max |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy C276 | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
| STANDARD | UNS | WNR. | AFNOR | EN | JIS | OR | GOST |
| Hastelloy C276 | N10276 | 2.4819 | – | NiMo16Cr15W | NW 0276 | ЭП760 | ХН65МВУ |
Post-forging operations for Hastelloy C276 include heat treatment (such as annealing) to relieve stresses and improve mechanical properties, followed by surface finishing (like pickling or grinding) to remove oxides and enhance corrosion resistance.
To determine if Hastelloy C276 forgings meet your needs, assess their chemical composition, mechanical properties, and resistance to corrosion under the specific conditions of your application. Conduct testing such as tensile, impact, and corrosion tests for confirmation.
The ideal temperature range for forging Hastelloy C276 is between 1,900°F and 2,200°F (1,038°C to 1,204°C). This ensures proper deformation without compromising material properties.
Hastelloy C276 forgings find extensive use in components like flanges, nozzles, valve bodies, heat exchanger parts, and pump housings that come into contact with aggressive chemical media. They excel in systems dealing with wet chlorine gas, hydrochloric acid, sulfuric acid, and chlorine dioxide. Their ability to resist a wide array of corrosive agents makes them perfect for applications in chemical reactors, waste treatment equipment, and offshore or marine settings. Thanks to their excellent formability, weldability, and mechanical stability, C276 forgings are the go-to choice for equipment facing both chemical attacks and demanding conditions.
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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