The melting can withstand a pressure of 9 to 12 atmospheres, but with a powerful hydraulic hammer, it can crack. It is also resistant to contaminated heat transfer fluid and can last up to 40 or even 100 years with appropriate care.
Cast iron radiators are heavier than bimetallic radiators, making them difficult to install.
The price of bimetallic radiators is higher than that of melting.
The result is this: if you compare all the pros and cons, bimetallic radiators are preferable. However, if you have already installed cast iron batteries, you should not rush to replace them. First, try to replace a radiator and assess the difference. This will help you determine which type of radiator is best suited to your needs.