The difference between bronze and brass
Brass
Brass is an alloy composed of copper and zinc: brass composed of copper and zinc is called ordinary brass, and a variety of alloys composed of more than two elements are called special brass. Brass has strong wear resistance, and brass is often used in the manufacture of valves, water pipes, connecting pipes for internal and external air conditioners, and radiators.
Brass, the most widely used copper alloy, is an alloy of copper and zinc. It is named for its yellow color and has good mechanical properties and wear resistance.
Brass is a beautiful natural material whose surface color will gradually change over time. Using brass as the surface cladding material of the building can form a natural and colorful facade that leaves a warm impression. Yellow Copper has the characteristics of beautiful color, durability, and environmental protection, giving people a pleasant surprise.
Bronze
The alloy of copper and tin is called bronze because of its blue color. Bronze is the earliest alloy used in history. It is copper-tin alloy or other alloys of elements other than zinc and nickel, such as aluminum, beryllium, manganese, and silicon. Copper bronze generally has good corrosion resistance, wear resistance, castability, and excellent mechanical properties.
Bronze is the earliest alloy in the history of metal casting. Adding tin or lead alloys to pure copper (copper) has special importance and historical significance. Compared with pure copper (copper), bronze has high strength and low melting point (25% If tin is used to smelt bronze, the melting point will drop to 800°C. The melting point of pure copper (copper) is 1083°C). Bronze has good castability, wear resistance and chemical stability.
Difference Between Brass and Bronze Compare the Difference Between Similar Terms
1. Different definitions
Ordinary brass is a binary alloy of copper and zinc. Due to its good plasticity, it is suitable for manufacturing plates, rods, wires, pipes and deep-drawing parts, such as condensation pipes, heat dissipation pipes, mechanical and electrical parts, etc. Brass with an average copper content of 62% and 59% can also be cast, known as cast brass.
Bronze originally refers to copper-tin alloys, but it is customary in the industry to call copper alloys containing aluminum, silicon, lead, beryllium, manganese, etc. also bronze, so bronze actually includes tin bronze, aluminum bronze, aluminum bronze, beryllium bronze, and silicon bronze. , lead bronze, etc. Bronze is also divided into pressure-worked bronze and cast bronze.
Two, different ingredients
Tin bronze The copper-based alloy with tin as the main alloying element is called tin bronze. Most tin bronzes used in industry have a tin content between 3% and 14%. Tin bronze with a tin content of less than 5% is suitable for cold processing; tin bronze with a tin content of 5% to 7% is suitable for hot processing; tin bronze with a tin content of more than 10% is suitable for casting.
Special brass In order to obtain higher strength, corrosion resistance and good casting performance, aluminum, silicon, manganese, lead, tin and other elements are added to the copper-zinc alloy to form special brass. Such as lead brass, tin brass, aluminum brass, silicon brass, manganese brass, etc.
3. Main performance
Ordinary brass is a copper-zinc binary alloy, and its zinc content varies widely, so its room temperature structure is also very different. According to the Cu-Zn binary state diagram, there are three types of brass at room temperature: brass with zinc content below 35%, the microstructure at room temperature is composed of single-phase α solid solution, called α brass; Brass with an amount in the range of 36% to 46%, the microstructure at room temperature is composed of (α+β) two-phase, called (α+β) brass (two-phase brass); the zinc content exceeds 46 %~50% brass, the microstructure at room temperature is only composed of β phase, which is called β brass.
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