In modern industrial production, brass and copper alloys are one of the commonly used materials. Among them, C38000 and C28000 are two common copper alloys, which have different performance in terms of hardness. In the following, we will compare and analyze the hardness of C38000 and C28000 from different angles.
First of all, from the viewpoint of chemical composition, the copper content of C38000 is higher than that of C28000. the copper content of C38000 is 76%-79%, while C28000 only has 59%-62% copper content. The hardness of copper is increased with the increase of copper content, so the hardness of C38000 should be higher than C28000.
Secondly, from the mechanical properties, the tensile strength and yield strength of the two are also different. Take tensile strength as an example, the tensile strength of C38000 is 655 MPa, while C28000 is only 414 MPa, which indicates that under the same stress, C38000 is more resistant to deformation, so it should be harder than C28000.
Thirdly, in terms of corrosion resistance, C28000 is more corrosion resistant than C38000. This is because a certain amount of zinc has been added to C28000 to enhance its corrosion resistance. However, the addition of zinc reduces the hardness of the alloy, so C28000 is less hard than C38000.
Fourthly, from the point of view of application, C38000 is mainly used in the manufacture of parts that require high strength and high hardness, such as pneumatic pipes, high temperature pipes, and purple copper doors and windows. C28000, on the other hand, is mainly used in the manufacture of parts requiring corrosion resistance, such as faucets, valves, automobile radiators and so on. Therefore, different application scenarios require different material hardness.
Finally, overall, the hardness of C38000 is higher than that of C28000, but this does not mean that C38000 is better than C28000 in all aspects, in fact, both have their own application value in different fields.C38000 and C28000 are both copper alloys, but there is a difference in their hardness.C38000 has a high hardness mainly because of its high copper content, good mechanical properties. Good mechanical properties. Although C28000 has a lower hardness, its corrosion resistance is better than that of C38000.
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