The lifespan of tungsten carbide wire drawing dies can vary depending on a number of factors, including the type of wire being drawn, the operating conditions, and the quality of the dies themselves. In general, tungsten carbide wire drawing dies are known for their durability and long lifespan, and can often be used for thousands or even tens of thousands of drawing passes before needing to be replaced.

However, the specific lifespan of a tungsten carbide wire drawing die will depend on the wire material being drawn, the diameter and speed of the wire, and the operating conditions of the wire drawing process. As you mentioned, for high carbon steel wire, a tungsten carbide wire drawing die can last for around 20 tons of wire within 2.0mm, and above 2.0mm it can last for 30-40 tons. For low-carbon steel wire, the lifespan of a tungsten carbide wire drawing die can be around 10-20 tons for powder drawing within 2.0mm, and 30-40 tons above 2.0mm. For water drawing of low carbon steel wire, the lifespan can be around 5 tons within 2.0mm and 5-10 tons above 2.0mm.

It’s also important to note that proper maintenance and care of tungsten carbide wire drawing dies can help extend their lifespan. Regular cleaning, lubrication, and inspection can help ensure that the dies are functioning properly and reduce the risk of premature wear or failure.