From the heart of Hamilton, New Zealand, Hemi Metals is proud to be a trusted supplier of high-performance alloys, including the exceptional Haynes 188. We understand that demanding environments require exceptional materials, which is why we specialize in providing high-quality Haynes 188 bars and rods. Our commitment is to deliver not just a product, but a reliable solution for our customers’ most challenging engineering needs, backed by local expertise and a focus on building strong, lasting partnerships.
Haynes 188 is a cobalt-based superalloy prized for its ability to maintain strength under intense heat. Its composition includes significant amounts of chromium for oxidation resistance and tungsten for solid solution strengthening. This combination allows it to retain impressive tensile and creep-rupture strength at temperatures soaring up to 1200°C, all while demonstrating good fabricability for a material of its class. It truly stands out in high-stress, high-temperature scenarios where other materials would fail.
| Standards : | ASTM 5772, ASME S5772 |
| Dimensions : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Wire : | Thickness starting from 0.05mm |
| Round bar size : | Diameter: 3-~800mm |
| Hex Bar size : | 2-100mm A/F |
| Flat bar size : | Thickness: 2 -100mm / Width: 10 to 500mm |
| Square bar size : | 4 to 100mm |
| Rectangular Bars Size : | 33 x 30mm to 295 x 1066mm |
| Hollow Bar : | 32mm OD x 16mm ID to 250mm OD x 200mm ID |
| Tolerance : | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Finish : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Grade | C | Mn | P | S | Si | Ni | Cr | Fe | W | B | La |
| Haynes 188 | .05 – .15 | 1.25 max | .020 max | .015 max | .20 – .50 | 20.0 – 24.0 | 21.0 -23.0 | 3.0 max | 13.0 -15.0 | .015 max | .03 – .15 |
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| ksi – 65 , MPa – 446 | ksi – 140 , MPa – 963 | 55 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Haynes 188 | 2.4683 | R30188 |
Haynes 188 bars and rods exhibit excellent high-temperature strength and oxidation resistance, maintaining structural integrity up to 2000°F (1093°C), making them ideal for aerospace, turbine, and high-performance engine applications.
To maintain Haynes 188 bars, regularly inspect for corrosion or wear, avoid excessive temperature fluctuations, clean with non-abrasive methods, and store in a dry, cool environment to prevent degradation.
Yes, Haynes 188 rods can be customized in size and length according to specific requirements. Manufacturers can provide tailored solutions based on customer specifications for industrial applications.
You’ll typically find Haynes 188 bars and rods hard at work in the hottest sections of gas turbine engines, such as combustion cans and afterburner components. Its resilience makes it a perfect fit for industrial furnace fixtures, heat-treating trays, and critical parts in aerospace and power generation systems. Essentially, whenever an application involves extreme temperatures combined with significant mechanical stress, this alloy provides the durable, long-lasting performance needed to ensure reliability and safety in some of the world’s most advanced technologies.






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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