Hemi Metals is a leading manufacturer and supplier from Hamilton New Zealand, providing high-quality metal products for all sectors. Being known for accuracy and reliability, the company supplies a variety of materials, such as Tungsten Bar and Rod. Due to their exceptional strength, durability, and resistance to extreme conditions, Tungsten Bar and Rod products from Hemi Metals are being used in numerous industries, ranging from aerospace to defense and manufacturing. Hemi Metals ensures top standards of quality through custom solutions based on the client’s specific requirements, making it a trusted name in the metal supply sector.
Tungsten bars and rods are mainly made up of tungsten (W), and the prevailing concentrations are between 99.9% and 99.95%. The material is highly brittle with a high melting point of about 3,422°C, and it exhibits excellent hardness. Some small quantities of additives that are present include 0.5 to 1 percent iron (Fe), 0.2 to 0.5 percent nickel (Ni), and sometimes a few percent of carbon (C) to enhance machinability and strength. Mechanical properties show tensile strengths around 700-1 500 MPa, elongations of about 10-20%, and even hardness up to 400-500 HV; these properties especially make tungsten suitable for higher temperature and stress applications.
| Standards : | ASTM F288 / ASME SF288 |
| Thickness : | Range from .008″ to .0125″ |
| Hardness : | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Form : | Round Bar, Wire |
| Tungsten Grades | HA 190 / HA 1925 / HA 195 / HE 390 / HE 3925 / HE 395 / HE 397 |
| Element | R05255 (Ta10W) (%,Max) | R05252 (Ta2.5W) (%,Max) |
| C | 0.01 | 0.01 |
| O | 0.015 | 0.015 |
| N | 0.01 | 0.01 |
| H | 0.0015 | 0.0015 |
| Fe | 0.01 | 0.01 |
| Mo | 0.02 | 0.02 |
| Nb | 0.1 | 0.5 |
| Ni | 0.01 | 0.01 |
| Si | 0.005 | 0.005 |
| Ti | 0.01 | 0.01 |
| W | 9.0–11.0 | 2.0–3.5 |
Tungsten rods are not highly susceptible to galvanic corrosion because they are highly resistant to corrosion in most environments. However, if paired with more reactive metals, galvanic corrosion may occur.
Yes, Tungsten bars can be welded using specific techniques such as TIG (Tungsten Inert Gas) welding. However, proper preparation and high heat are required due to Tungsten's high melting point.
Maintain tungsten rods by storing them in a dry, clean area to prevent oxidation. Avoid bending or exposing them to extreme heat. Regularly inspect for damage and handle with care.
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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