Why are brass pipe rust when exposed to the sun?
Brass pipe: Seamless pipe made of brass by restriction and drawing is a kind of non-ferrous metal pipe.
Brass code: The symbol (Chinese phonetic alphabet) “H” is chosen to indicate. The content of “H” and basic element copper in brass indicates that 68 copper is H68, 65 copper is H65, H62 is the same.
Characteristic of brass tube: brass tube has light weight, good thermal conductivity and high low temperature strength. It is often used to make heat exchangers, such as condensers. It is also used to install cryogenic pipelines in oxygen production equipment. Copper pipes with small diameters are often used to transport pressurized liquids (such as smooth systems, oil pressure systems, etc.) and pressure measuring pipes for instrumentation. Brass pipe has the characteristics of consolidation and corrosion resistance. Brass pipe is the best water supply pipe.
The density of brass tube: the density of brass tube processed is 8.5-8.8 (g/cm3), and the density of cast brass is 7.7-8.55 (g/cm3). Why are brass tubes rusty?
The so-called rusting is iron and oxygen in the air touch to form oxides, iron oxide is iron oxide (Fe2O3), its color is iron red.
Brass tube is also oxidized, its color is green, so I always hear the saying of copper “green hair” when the brass pipe rust.
To put it bluntly, these two metals are not too stable in the air, so they have the phenomenon of oxidation. The more vivid metals are potassium, calcium, sodium, magnesium, aluminium and zinc.
Below is a list of the activities of metal materials, the most active on the left and the most stable on the right.
Potassium, Calcium, Sodium, Magnesium, Aluminum, Zinc, Iron, Tin, Lead, Copper, Mercury, Silver, Platinum, Gold
The activity of sodium metal is very frightening. It can not be stored in the air. It is necessary to keep it in the oil. Once put into water, it will react with water to produce sodium hydroxide, which produces a part of hydrogen and releases a lot of heat, leading to the burning of hydrogen.
Naval Brass Pipe detail information: Material: Brass, Copper, Stainless Steel, Aluminium, Surface: Polished, Anodized, Coated or as customized Standard: DIN GB ISO JIS BA ANSI Package: Cartons or as required Brass pipes are often used as water pipes instead of steel pipes. They are hardened and tempered and softened and tempered. A 20-foot straight tube […]
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