Chemical Composition
Iron White Brass B10:
The main components are copper (Cu), nickel (Ni) and iron (Fe). The copper content is generally in the residual range, nickel content of 9 - 11%, iron content of 1 - 1.5%. In addition, there are small amounts of unavoidable impurities. The presence of the element nickel gives this alloy its white colour, good corrosion resistance and special physical properties.
Nickel and copper can form an infinite solid solution, a structure that contributes to the alloy's many properties such as strength, toughness, and corrosion resistance. Iron in the alloy plays the role of grain refinement, thus further improving the mechanical properties of the alloy.
Naval Brass C44300:
Composed primarily of copper (Cu), zinc (Zn) and tin (Sn). Copper content in 69.0 - 71.0%, zinc for the remainder, tin content in 0.8 - 1.3%. Small amounts of other elements such as arsenic (As) (0.03 - 0.06%) and lead (Pb) (0.05%) are also present.
Tin is added primarily to improve the alloy's seawater corrosion resistance. Zinc and copper form a brass matrix, and the element arsenic helps to inhibit dezincification corrosion, allowing the alloy to perform better in corrosive media such as the marine environment.
Performance Characteristics
Corrosion Resistance
Iron White Brass B10:
has excellent resistance to seawater corrosion, especially in high velocity seawater and seawater environments containing impurities. This is due to the fact that nickel forms a stable passivation film on the surface of the alloy, preventing seawater attack.
It also has good resistance to some acidic and alkaline solutions, and can resist the corrosion of a variety of chemical media in the chemical industry and other fields.
Naval brass C44300:
is mainly designed for corrosive environments such as seawater, and its seawater corrosion resistance is also very good. The combination of tin and arsenic elements effectively inhibits dezincification corrosion, enabling the alloy to maintain good structural integrity in long-term immersion in seawater or exposure to atmospheric environments containing salt spray.
It also has some corrosion resistance in fresh water, steam and other media, but its advantages in seawater environments are more prominent in comparison.
Mechanical Properties
Iron White Copper B10:
Strength and toughness work well together. Its tensile strength is generally high, while it has good elongation and can withstand large tensile and bending deformations without breaking.
The hardness is moderate, and after appropriate processing treatment (such as cold working or heat treatment), better mechanical properties can be obtained to meet the needs of different engineering applications.
Naval Brass C44300:
Better strength properties with high tensile and yield strength. Its strength mainly comes from the copper-zinc matrix and the strengthening effect of tin elements.
The toughness is also considerable, with good resistance to deformation when subjected to impact or dynamic loads. However, its toughness may in some cases be less favourable than that of Fe2O3 B10.
Processing Properties
Iron White Copper B10:
Cold working properties are good, and the alloy can be subjected to processing operations such as cold rolling and cold drawing to make a variety of tubes and plates. In the cold working process, the alloy's deformation ability is strong, and the work hardening phenomenon is relatively moderate, which makes it easy to control the machining accuracy.
Hot processing is also relatively easy, through forging, hot rolling and other ways of forming. But in the hot working process need to pay attention to control the processing temperature and deformation speed, in order to obtain the ideal organisational structure and performance.
Naval brass C44300:
has excellent cold working performance, easy to cut, cold bending and other processing, in the manufacture of precision parts can well meet the processing requirements.
In terms of hot working performance, it can withstand a certain degree of hot working, such as hot extrusion, etc. However, some problems such as thermal cracking may occur during hot working, and proper control of the processing conditions is required.
Application Scenario
Iron White Copper B10:
In the marine field, it is used to manufacture condensate pipes and seawater pipes for ships. Due to its corrosion resistance and good heat transfer performance in the high-speed seawater flow environment, it can ensure the efficient heat exchange process in the ship's power system.
In the chemical industry, it is used to manufacture various corrosion-resistant chemical equipments, such as heat exchangers, reactor linings, etc., in order to resist the corrosion of chemical raw materials and reaction products.
In the electric power industry, it is used as condenser tubing for generators to ensure the stable operation of power generation equipment under various water quality conditions (including water containing certain corrosive impurities).
Naval Brass C44300:
is widely used in ship's propellers, rudder blades, marine valves and other parts. These parts are in direct contact with seawater, and the seawater corrosion resistance of naval brass can effectively extend their service life.
In marine engineering equipment, it is used in the manufacture of seawater heat exchangers, some parts in desalination devices, etc. It meets the requirements for the use of equipment in the marine environment.
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