Nestled in the heart of Hamilton, Hemi Metals has established itself as a trusted source for high-quality marine and industrial components. Our expertise shines particularly bright in the creation of robust copper nickel forgings, where our skilled team combines local craftsmanship with a deep understanding of the demanding environments our products are built for. We take pride in supplying forgings that aren’t just materials, but reliable solutions engineered for performance and longevity, supporting industries both across New Zealand and around the globe.
The exceptional strength of our copper nickel forgings comes from a specific composition, primarily a blend of copper with a significant nickel content, often including additions like iron and manganese for enhanced performance. This alloy mix is precisely controlled to achieve outstanding mechanical properties, resulting in a material renowned for its remarkable resistance to corrosion, especially in seawater. Beyond its defensive qualities, it maintains excellent ductility and toughness, even in challenging conditions, forming a material that is both incredibly durable and easy to work with during fabrication.
| Standard | ASTM B122, ASME SB122 |
| Specification | DIN, ASTM, BS and all International Standards |
| 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. |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
Compatible welding processes for copper-nickel forgings include TIG (Tungsten Inert Gas), MIG (Metal Inert Gas), and Stick welding. These methods ensure strong, durable joints while preserving the material's properties.
Copper-nickel forgings are commonly used in marine, aerospace, chemical processing, power generation, oil and gas, desalination, and plumbing industries due to their corrosion resistance, strength, and durability in harsh environments.
Factors ensuring the durability of copper-nickel forgings include proper alloy composition, effective heat treatment, corrosion resistance, precise forging processes, and protective coatings, all contributing to strength, reliability, and long-term performance.
The real-world value of these forgings is realized in some of the most critical applications, particularly throughout the marine industry. They are the preferred choice for essential shipbuilding components like seawater piping systems, pumps, valves, and fittings, where their resistance to saltwater corrosion is paramount. Beyond the ocean, their reliability makes them ideal for offshore oil and gas platforms, power generation plants, and desalination units. Essentially, anywhere safety and longevity are non-negotiable in a corrosive environment, you’ll find copper nickel forgings hard at work.
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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