Based in the industrious heart of Hamilton, New Zealand, Hemi Metals has built a strong reputation as a trusted manufacturer and supplier of high-performance materials. We proudly produce precision Hastelloy forgings, a process that enhances the inherent strength of this remarkable superalloy. Our focus is on delivering components that meet the most rigorous demands, providing durable and dependable solutions for industries where failure is not an option. We understand that our clients need more than just a part; they need a partner they can rely on for consistent quality and performance under pressure.
Hastelloy forgings are celebrated for their unique composition, primarily a nickel-chromium-molybdenum blend, which grants them exceptional resistance to a wide range of corrosive chemicals. The forging process itself hones these innate qualities, creating a refined grain structure that significantly boosts mechanical properties. This results in components with superior tensile strength, impressive impact toughness, and excellent fatigue resistance, even when exposed to extreme temperatures. Essentially, forging transforms the alloy into a more robust and reliable version of itself, ready for the toughest assignments.
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 C22, Hastelloy C276
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| C 276 | 0.010 max | 1.00 max | 0.08 max | 0.03 max | 2.50 max | 50.99 min* | 14.50 – 16.50 | 4.00 – 7.00 | 15.00 – 17.00 | 0.04 max |
| C 22 | 0.010 max | 0.50 max | 0.08 max | 0.02 max | 2.50 max | 50.015 min* | 20.00 – 22.50 | 2.00 – 6.00 | 12.50 – 14.50 | 0.02 max |
| B2 | 0.02 max | 1.0 max | 0.1 max | 0.03 max | 1.0 max | Bal | 1.0 max | 2.0 max | 26 – 30 | 0.04 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Alloy C276 | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
| Alloy C22 | 8.69 g/cm3 | 1399 °C (2550 °F) | Psi – 1,00,000 , MPa – 690 | Psi – 45000 , MPa – 310 | 45 % |
| Alloy B2 | 9.2 g/cm3 | 1370 °C (2500 ºF ) | Psi – 1,10,000 , MPa – 760 | Psi – 51000 , MPa – 350 | 40 % |
To improve the surface finish of Hastelloy forgings, use techniques like polishing, grinding, or shot peening. Additionally, chemical or electrochemical cleaning can remove surface contaminants and enhance smoothness.
The most suitable forging techniques for Hastelloy include open-die forging and closed-die forging, which ensure optimal material flow and minimize defects. These methods provide the necessary strength and precision for high-performance applications.
To determine if Hastelloy forgings meet your needs, evaluate their chemical composition, mechanical properties, and corrosion resistance in your specific operating conditions. Conduct material testing or consult with suppliers for tailored solutions based on your application requirements.
The exceptional durability of Hastelloy forgings makes them indispensable across many critical sectors. You’ll find them at the core of chemical processing plants, handling aggressive acids and halogens, and within pollution control scrubbers. They are vital in the oil and gas industry for components facing sour service environments, and in marine applications where saltwater corrosion is a constant threat. From aerospace to pharmaceutical manufacturing, these forgings provide the backbone for equipment that must operate safely and efficiently in the world’s most challenging conditions, ensuring long-term integrity and minimal downtime.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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