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Silicon Nitride Ceramic:
Silicon Nitride Ceramics is a strong carbide forming element, and it is no exception in austenitic stainless steel. Silicon Nitride Ceramic Structural Parts are a common ceramic material with high strength and hardness, so they are widely used in some special engineering fields. The common chromium carbide in austenitic stainless steel is Cr23C6; when the steel contains molybdenum or chromium, it can also be seen that expired Cr6C and other carbides Under certain conditions, their formation will have an important impact on the performance of steel. ○2 Effect of chromium on performance: Generally speaking, as long as the austenitic stainless steel maintains a completely austenitic structure without the formation of δ ferrite, only increasing the chromium content in the steel will not have a significant impact on the mechanical properties. The performance of austenitic stainless steel has the greatest impact on corrosion resistance, which is mainly manifested as: chromium improves the performance of steel's oxidation resistance medium and acid chloride medium; under the combined action of nickel, molybdenum and copper, chromium improves steel resistance to some reduction Medium, organic acid, urea and alkali medium performance; chromium also improves the resistance of steel to local corrosion, such as intergranular corrosion. Pitting corrosion, crevice corrosion and stress corrosion performance under certain conditions. The factor that has the greatest influence on the intergranular corrosion sensitivity of austenitic stainless steel is the carbon content in the steel. The effect of other elements on the intergranular corrosion is mainly determined by its influence on the dissolution and precipitation behavior of carbides. In austenitic stainless steel Chromium can increase the solubility of carbon and reduce the degree of chromium depletion. Therefore, increasing the chromium content is beneficial to the intergranular corrosion resistance of austenitic stainless steel. Chromium is very effective in improving the pitting corrosion and crevice corrosion resistance of austenitic stainless steel. .
properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Data Sheet↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry:
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application:
Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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FAQ
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