Testing sieve is a type ofInstrument for separating certain particles from materials using wire cloth with precise weaving openings.The test screen consists of a sieve mesh installed in a circular metal frame, with various sizes and specifications.When used in a vibration table, a set of test sieves is a quality control tool used to measure the particle size distribution in the sample. They are suitable for dry, freely flowing materials. The most important characteristics are the consistency of the mesh and the wire diameter. Test screens are usually made of brass or stainless steel.

Brass test sieve

Brass refers to a series of copper zinc alloys.The various combinations of copper and zinc endow brass materials with different mechanical and corrosion properties.The commonly used test sieves in the market are either an 80/20 alloy combination or phosphor bronze. The brass frames on the market can be red, brass, or yellow.Brass mesh has fireproof flower function.It should be remembered that the most important part of testing the screen is the consistency of the network port.Due to the softness of brass material, the deterioration rate of brass mesh fabric is faster than that of stainless steel. This may result in users having to replace the test sieve more frequently to maintain consistency of the results.Users will also see the brass sieve discolor when the material is exposed to moisture. This discoloration usually does not affect the screening results. Brass test screens were widely used in the early stages of screening over a hundred years ago. Many companies still order brass test screens because they have always been in the laboratory. With the increase in steel supply and more affordable materials, companies have found the benefits of turning to stainless steel varieties to obtain their longer lifespan

Stainless steel test sieve

The stainless steel test screen adopts the 300 series, and the common models are304 and 316.The mesh from US # 8 to US # 500 is made of 316 stainless steel, while other sizes of mesh are woven with 304 grade. The stainless steel frame also comes from the same batch of 300 series. thatThe commonly used stainless steels in the field are 304, 305, or 316 stainless steel.Stainless steel test screens are more durable than soft brass materials. Stainless steel mesh is more corrosion-resistant and has better resistance to abrasive materials.Stainless steel inpharmaceuticalandWidely used in the food industryHowever, industrial companies producing sand or diamond dust also benefit from stainless steel sieves due to their durability and strength.

Finally,When selecting a test screen, the materials of both the frame and grid will affect the overall cost.The brass frame screen has brass or stainless steel mesh, and in many cases, the prices of these two types of mesh remain the same.However, replacing with a stainless steel frame - paired with stainless steel mesh - usually incurs higher costs. This is because stainless steel components have higher durability, corrosion resistance, and manufacturing complexity.The choice of brass and stainless steel should be determined based on your testing environment, material compatibility, and long-term usage needs. Although cost is a factor, performance and durability are often worth investing in high-grade materials.