H90 brass has a series of remarkable characteristics. Its performance is similar to H96, but its strength is slightly higher than H96. It has good mechanical properties and pressure processing properties, excellent surface treatment performance, and can be plated with metal and enamel.
In terms of chemical composition, the content of copper (Cu) is between 88.0 - 91.0%, iron (Fe) usually does not exceed 0.10%, lead (Pb) does not exceed 0.05%, zinc (Zn) is the remainder, and the total impurities do not exceed 0.3%.
The mechanical properties of H90 brass are also relatively good. Its density is about 8.8 - 8.9 g/cm³, the tensile strength (σb/MPa) is ≥390, and the elongation (δ10/%) is ≥3. The mechanical properties in different states are different. For example, when the copper rod is in the (Y) state and the diameter is 3-40mm, the tensile strength is Rm/Mpa (≥330); when the copper plate and copper strip are in the (M, Y2, Y) state and the thickness is ≥0.2mm, the tensile strength is Rm/Mpa (≥245-390), and the elongation after fracture is % (≥3-35); when the copper tube is in the (M, M2, Y2, Y) state, the tensile strength is Rm/Mpa (≥220-360), the elongation after fracture is % (≥18-42), the hardness is HV (≥45-105), and the hardness is HB (≥40-100).
H90 brass is available in a variety of specifications, including copper plates and thin materials (thickness 1 - 150MM), copper rods (diameter 4 - 350mm), copper strips (thickness 0.1 - 3.0mm), copper tubes (outer diameter 10 - 300mm, capillary tubes: outer diameter 1 - 6.1mm), wires or silk materials (φ0.1 - 12.7mm, coils or straight strips) and forgings.
H90 brass has a wide range of applications. It can be used for metal plating and enamel coating. It is the main material for bullet shells. It is also used for various water supply and drainage pipes, bimetallic strips, medals, artworks, radiator parts, etc. It can be seen in the electronics, hardware, architectural decoration and other industries.
Chemical composition of H90 brass
The chemical composition of H90 brass has strict standards and ranges. Among them, the content of copper (Cu) is between 88.0% and 91.0%, and zinc (Zn) is the balance. In addition, it also contains a small amount of nickel (Ni) of about 0.5%, iron (Fe) of about 0.10%, lead (Pb) of about 0.03%, and other impurities of no more than 0.2%. The proportion of these components jointly determines the performance characteristics of H90 brass. For example, the right amount of copper gives the material good electrical and thermal conductivity, while a small amount of other elements improves its mechanical properties and corrosion resistance to a certain extent. Take lead as an example. Although its content is extremely low, it can improve the cutting performance and plasticity of the alloy under certain conditions.
Mechanical properties of H90 brass
H90 brass has good mechanical properties. Its tensile strength (σb/MPa) is usually ≥390, and its elongation (δ10/%) is ≥3. This means that H90 brass has high strength when subjected to tension, and also has a certain ductility when deformed. For example, when manufacturing some parts that need to withstand certain tension and deformation, such as springs, pins, etc., the mechanical properties of H90 brass can meet the requirements. Compared with some other brass materials, H90 brass may have a slightly higher strength, which makes it advantageous in certain specific applications.
Supply specifications of H90 brass
The supply specifications of H90 brass are relatively rich and varied. The thickness of copper plates and thin materials is usually between 1-150MM; the diameter of copper rods is generally in the range of 4-350mm; the thickness of copper strips is about 0.1-3.0mm; the outer diameter of copper tubes is commonly 10-300mm, while the outer diameter of capillaries is about 1-6.1mm; the diameter of wires or filaments is usually between 0.1-12.7mm, and can be supplied in the form of coils or straight bars; forgings can be customized according to customer needs and the shapes provided. This rich supply specification provides convenience for different industries and application scenarios, and can meet various complex and special processing needs.
Application fields of H90 brass
H90 brass is widely used in many fields. Due to its good mechanical properties, pressure processing properties and surface treatment properties, it is often used to manufacture electrical contacts, electrical insulation materials and conductive parts. In the military field, H90 brass is one of the main materials for bullet shells. In the building decoration industry, H90 brass can be used to make various decorative parts such as door handles, railings, etc. In the manufacture of electronic equipment, it is often used to manufacture connectors, sockets and other parts. In addition, H90 brass also plays an important role in automobile manufacturing, mechanical processing and other fields. For example, in the manufacture of automobile engines, H90 brass can be used to make some small parts, such as sensor housings.
Performance comparison of H90 brass with other brasses
There are certain differences in performance between H90 brass and other brasses. Compared with H96 brass, H90 brass has a slightly higher strength, but is similar in electrical conductivity and thermal conductivity. H62 brass has good mechanical properties and cutting performance, but may not be as good as H90 brass in terms of corrosion resistance. H68 brass has excellent plasticity, but relatively low strength. For example, in situations where higher strength and certain corrosion resistance are required, H90 brass may have more advantages; while in applications with extremely high plasticity requirements, H68 brass is more suitable.
In general, H90 brass occupies an important position in the brass family with its unique chemical composition, excellent mechanical properties, diverse supply specifications and wide application fields. With the continuous advancement of science and technology and the development of various industries, the application prospects of H90 brass will be broader.
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