What is the difference between zinc alloy and tin alloy?

First, the alloys are different.

1. Zinc alloy.

Zinc alloy is an alloy composed of other elements based on zinc. Commonly added alloying elements include aluminum, copper, magnesium, cadmium, lead, titanium and other low-temperature zinc alloys. Zinc alloy has low melting point, good fluidity, fusible welding, brazing and plastic processing, corrosion resistance in the atmosphere, and the residual waste is easy to remelt; However, the creep strength is low, and it is easy to cause dimensional changes due to natural aging.

Prepared by melting, die-casting or pressure processing into timber.

2. Tin alloy.

A non-ferrous alloy composed of tin-based and other alloying elements. The main alloying elements are lead, antimony, copper, etc. Tin alloy has low melting point, low strength and hardness, it has high thermal conductivity and low coefficient of thermal expansion, atmospheric corrosion resistance, excellent anti-friction performance, easy to weld with steel, copper, aluminum and its alloys and other materials, is a good solder, but also a good bearing material.

Second, the characteristics are different.

1. Zinc alloy.

1) Relative proportionality.

2) Good casting performance, can die cast complex shape, thin-walled precision parts, the surface of the casting is smooth.

3) Surface treatment: electroplating, spraying, painting, polishing, grinding, etc.

4) No iron absorption, no corrosion, no mold sticking during melting and die casting.

5) It has good mechanical properties and wear resistance at room temperature.

2. Tin alloy.

Tin has -sn-sn allotropic transitions in solid states. When it is higher than 13, the tin is stable; Below 13, the tin is stable. Tin has a body-centered cubic lattice, which is white, also known as "white tin"; Tin has a diamond-shaped cubic lattice that is gray in color, also known as "gray tin".

When tin is converted to tin, the specific volume increases by about 27%, and the whole white tin will turn into gray powder, a phenomenon called "tin plague". If the white tin block comes into close contact with the gray tin at room temperature, it will also be infected, and it will gradually and spontaneously rupture along the contact part into the metal.

Third, the use is different.

1. Zinc alloy.

The material used for zinc alloy color steel anti-theft windows is the same as that of highway guardrails, high-voltage towers and other field facilities. High strength, exquisite appearance, bright color, high quality and low price, it is the best substitute for stainless steel protective net.

2. Tin alloy.

Tin alloy has good corrosion resistance and is widely used as a coating material, SN-PB series (62%SN), Cu-SN alloy series are used for bright anti-corrosion hard coating, and SN-Ni series (65%SN) is used as decorative anti-corrosion coating. SN-ZN alloys (75%SN) are used in electronic components, televisions, radios, etc.

I would like to say that tin alloys are lead-free, nickel-free, and chromium-free. Most of the European and American countries sell pewter alloy jewelry.

There is no lead in zinc alloys, and there is lead in tin alloys. Let's not talk about the rest.

Aluminum alloy has lower density, lighter weight and high strength, so it has good plasticity, while zinc alloy will add zinc, copper, magnesium and other elements, so it has good fluidity, fusible welding, and corrosion resistance, and the two are slightly different in composition and function

In general, zinc alloys are harder. The difference between the mechanical properties of aluminum alloy and zinc alloy Zinc alloy hardness 65-140, tensile strength 260-440, aluminum alloy hardness 45-90, tensile strength 120-290 Overall zinc alloy has higher hardness and higher tensile strength than aluminum alloy.

Zinc alloy is more expensive than aluminum alloy, aluminum alloy is not as expensive as zinc alloy, aluminum alloy is very cheap, and corrosion resistance is good, so aluminum alloy is widely used, and now the windows are almost all, but also relatively light, small density.

Zinc alloy is harder than aluminum alloy and has high tensile strength, but there is no absolute boundary. Pick it up, the zinc alloy is heavier.

The finish of aluminum alloy is a little better. Aluminum alloy is not easy to be oxidized, but its own hardness is not as good as zinc alloy, zinc alloy is easy to oxidize and deteriorate in the air for a long time, and it will become very brittle and easy to break after a long time.

Aluminum alloy has low density, but relatively high strength, close to or more than high-quality steel, good plasticity, can be processed into various profiles, has excellent electrical conductivity, thermal conductivity and corrosion resistance, is widely used in industry, and the amount of use is second only to steel.

The specific gravity of zinc alloy is about two times that of aluminum alloy, and the first is comparable, so zinc alloy is two or three times more expensive than aluminum alloy in terms of material cost.

If the surface of your product is to be polished and plated, and the appearance quality is very high, then you have to use zinc alloy. It is difficult for aluminum alloy material to achieve high surface quality requirements, because the aluminum alloy die-casting molding performance is poor, and the surface of the product is easy to produce a lot of pores, and the surface quality is very poor after electroplating.

Hello, I am inquiring for you, please wait a while, I will reply to you immediately Dear, hello, I am happy to answer for you. 1. Advantages and disadvantages of zinc alloy: advantages:

Cast zinc alloy has good fluidity and corrosion resistance, and is suitable for die-casting instruments, automobile parts shells, etc. Disadvantages: The most common defect in zinc alloy die castings is surface blistering.

2. Advantages and disadvantages of aluminum alloy: advantages: aluminum alloy has low density, but relatively high strength, close to or more than high-quality steel, good plasticity, can be processed into various profiles, has excellent electrical conductivity, thermal conductivity and corrosion resistance, is widely used in industry, and the amount of use is second only to steel.

Disadvantages: In the production process of aluminum alloy, it is easy to have casting defects such as shrinkage holes, sand holes, porosity and slag inclusion.

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The elements contained are different, aluminum alloys are generally magnesium, copper, silicon and zinc alloy elements include aluminum, copper, magnesium, cadmium, lead, titanium, etc.

1. The material is different

Copper is a pure metal with different constituent elements, and the element of metallic copper is Cu. Zinc alloy is an alloy, and the common element elements of zinc alloy are aluminum, copper, magnesium, cadmium, lead, titanium and other low-temperature zinc alloys.

2. The cost is different

40,000 tons of copper metal. Zinc alloy 10,000 tons, copper ** higher.

3. Hardness: Copper has high hardness and is more wear-resistant.

4. Plasticity:

Copper: Copper is widely used as a conductor for the inner core. It is used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields, and is second only to aluminum in the consumption of non-ferrous metal materials in China.

Copper is a red metal as well as a green metal. It is said that it is a green metal, mainly because it has a low melting point and is easy to remelt and re-smelt, so it is quite cheap to use.

Zinc alloy: good casting performance, can die cast complex shape, thin-walled precision parts, casting surface smooth. Surface treatment available:

Plating, spraying, painting, polishing, grinding, etc. It does not absorb iron, does not corrode the mold, and does not stick to the mold during melting and die casting. It has very good mechanical properties and wear resistance at room temperature.

It has a low melting point, melts at 385, and is easy to die-cast.

5. Distinguish between copper and zinc.

Physical method: Use a piece of fine sandpaper to polish the identification object, such as the rose red is copper, and the other colors are different types of copper alloys.

Chemical methods: chemical means, adding acid, bubbles are alloys, no reaction is copper, zinc can be dissolved in hot sodium hydroxide solution, copper cannot.

Zinc alloy is better, and it is also more expensive than aluminum alloy.

Zinc alloy is an alloy composed of other elements based on zinc, and the alloying elements commonly added are aluminum, copper, magnesium, cadmium, lead, titanium and other low-temperature zinc alloys. Zinc alloy has low melting point, good fluidity, fusible welding, brazing and plastic processing, corrosion resistance in the atmosphere, and the residual waste is easy to remelt;

Compared with aluminum alloy, the hardness of zinc alloy is higher, and the difference between the mechanical properties of aluminum alloy and zinc alloy is that the hardness of zinc alloy is 65-140, and the tensile strength is 260-440; The hardness of aluminum alloy is 45-90, the tensile strength is 120-290, and the overall zinc alloy has higher hardness and tensile strength than aluminum alloy.

Problems that need to be paid attention to in the production of zinc alloys.

1. Control the alloy composition from the purchase of alloy ingots, the alloy ingots must be based on ultra-high purity zinc, plus ultra-high purity aluminum, magnesium, copper alloy ingots, the factory has strict composition standards. High-quality zinc alloy material is the guarantee for the production of high-quality castings.

2. The alloy ingots purchased should ensure a clean and dry stacking area to avoid white rust caused by long-term exposure to moisture, or increased slag generation and metal loss due to pollution by factory dirt. A clean factory environment is very useful for the effective control of alloy composition. <>