Are boat propellers brass or bronze?
Normally we mostly say bronze propeller, because English is not our mother language, in our native speakers, we nearly think no difference when we express the propeller for brass propeller or bronze propeller.
Brass means yellow color copper, the main elements as:
1, Brass is an alloy composed of copper and zinc. Brass composed of copper and zinc is called ordinary brass. If it is composed of more than two elements, it is called special brass. Brass has strong wear resistance. Brass is often used to make valves, water pipes, connecting pipes for internal and external air conditioners and radiators, etc.
In order to improve the performance of ordinary brass, other elements such as aluminum, nickel, manganese, tin, silicon, lead, etc. are often added.
Aluminum can increase the strength, hardness and corrosion resistance of brass, but reduce its plasticity. It is suitable for marine condensers and other corrosion-resistant parts.
Tin can improve the strength of brass and its corrosion resistance to seawater, so it is called naval brass and is used for ship thermal equipment and propellers.
Lead can improve the cutting performance of brass, this kind of free-cutting brass is often used as watch parts. Brass castings are often used to make valves and pipe fittings.
2, Bronze is the earliest alloy in the history of metal smelting. An alloy of tin or lead is added to pure copper (red copper).
In china 5000 years ago, we had the bronze things like:
Now they are the history culture, very famous and good memory for we to better understand the passed days what they did and how was the life.
And the earliest one bronze thing is a knife with length 12.5cm, the history at least 5000 years ago, it usually call as the china first knife.
I also had a dream to be a history discover for the passed years, when I was 3 years old, it is said I am really interested in the old things not modern things, i think maybe my factor just from at that time, until now I keep the same habit, for the old things i could see more than 10 minutes and to think a lot about it, who made it, why he/she did that, when he/she did it, what did they thinking about. But for the fashion modern things, i just see the surface and will not consider more from its culture and inner soul.
Let us focus on the bronze propeller topic, from above declaration, we know the brass and bronze difference, brass includes bronze, only add tin or lead to the brass it can be called bronze, only add the tin or lead the brass could make better propeller. And the bronze propeller now we could do with diameter from 50cm to 1200cm with 3 blades, 4 blades, 5 blades, 6 blades and 7 blades. More than 80% propeller we export to Europ, America area. After the COVID-19 more customers want to visit our bronze propeller factory, because now we just discuss 3 agents for selling propellers, let us look forward better soon.!