Material Code Material Characteristics Introduction Cr30 is a ferritic high hardness stainless steel with brittleness and large casting difficulty. It is a proprietary material imported from Hs France. The material is high chromium and nickel free, while its corrosion and wear resistance is better than that of high chromium nickel molybdenum alloy , On behalf of the advanced world level. It not only has good wear resistance, but also has good corrosion resistance and strong resistance to pitting, intergranular corrosion resistance. 2605 (CD4MCu) is low-carbon duplex stainless steel, the introduction of the French H • S company's proprietary materials, high hardness, good casting performance, mechanical properties and machinability, good weldability. Both good corrosion resistance, but also good wear resistance, chloride-containing medium resistance to stress corrosion is also very good. 252004 is a low-carbon, high-nickel-chromium austenitic stainless steel with excellent corrosion resistance for the introduction of French company H • S and excellent corrosion resistance in non-oxidizing acids such as sulfuric acid, phosphoric acid, acetic acid and formic acid , Has good resistance to pitting corrosion in neutral chlorine ion medium, and has good resistance to stress corrosion and crevice corrosion. Applicable to various concentrations of sulfuric acid below 70 ℃, at any pressure at any concentration, any temperature of acetic acid and formic acid and acetic acid mixed acid corrosion resistance is also very good. C4 is a kind of ultra-low carbon and high-silicon austenitic stainless steel, which is a kind of concentrated nitric acid steel with excellent comprehensive performance and widest application in China's high-silicon austenitic stainless steel. In the low temperature (≤ 50 ℃), resistant to the full concentration of nitric acid, almost no corrosion, also has good chemical stability at high temperatures. Also resistant to concentrated sulfuric acid, nitric acid mixed sulfuric acid and alkali corrosion, the corrosion resistance was significantly higher than 1Cr18Ni9Ti. 941 austenitic stainless steel acid-resistant steel, has excellent resistance to sulfuric acid, phosphoric acid corrosion, has good thermal processing performance, mechanical properties, welding performance and casting performance. Corrosion resistance is very good at moderate concentrations (40-65%) of hot sulfuric acid (~ 100 ° C). 20 # alloy is a low-carbon high-chromium nickel-molybdenum austenitic stainless steel. It is characterized by sulfuric acid, nitric acid and their mixed acid and a variety of other redox media have better corrosion resistance. In particular, dilute sulfuric acid (concentration below 30%) environment to play its best corrosion resistance. The steel has a wide range of corrosion resistance and is corrosion resistant to many oxidative, reductive and redox compound media, including mineral acids, organic acids, bases or salts. SS920 is an ultra-low carbon high-silicon nickel-chromium stainless steel acid-resistant steel, a certain degree of difficulty casting, the material generated in high-temperature concentrated sulfuric acid passivation 镆, so that it has good corrosion resistance. In high temperature concentrated sulfuric acid (93 ~ 98%, 130 ℃) corrosion resistance is very good, reaching the level of the United States Lewmet alloy. But the alloy composition is low, almost half of the United States Lewmet alloy, it is very economical. This material is Beijing Steel Institute's patent. DF2 is a high hardness anti-wear chrome martensitic steel, casting a certain degree of difficulty. High hardness, good wear resistance. Is the French H • S's proprietary steel. Cr15Mo3 is a chromium-based wear-resistant white cast iron. The microstructure after heat treatment is martensite matrix + chromium carbide + Paralympic. The macroscopic hardness HRC is above 60, and the wear resistance is better than that of Ni- , Is a very good wear-resistant materials, can produce coal mill, ore crusher, cement mill, shot blasting machine, mud pump, slurry pump and other serious wear castings. Cr26 Cr-series wear-resistant white cast iron, heat treatment of the microstructure of the martensite matrix + chromium carbide + Paralympic, macro hardness HRC above 60. Excellent wear resistance. The material is high chromium content, and contains Cu elements, so a strong anti-corrosion ability, the use of a wider range, the use of better. Cr30A is a corrosion-resistant white iron with strong erosion resistance and corrosion resistance in low pH environments. It is suitable for low pH and abrasive environments and is particularly suitable for flue gas desulfurization units. Cr33 ultra-high-chromium white cast iron. After heat treatment, the microstructure is ferrite + M23C6 + secondary carbide. It is suitable for transporting high concentration, strong corrosion and strong abrasion phosphoric acid slurry. For example, phosphoric acid containing P2 O530%, temperature 85 ℃ and solid content 30% Slurry. KY series alloy is Beijing Ke Ye company's patented products, the series of materials, including KY701, KY703, KY704, KY705, KY706 and so on. KY series is a nitric acid special material for a variety of concentrations, a variety of temperature nitric acid medium, the corrosion resistance of the material reached the world advanced level. Z3CNUD26.05M (CD-4MCu) introduced the French company H • S proprietary materials, is a high alloy duplex stainless steel, high hardness, good casting performance, mechanical properties and machinability, good welding performance. Both good corrosion resistance and good wear resistance, chloride-containing medium resistance to stress corrosion is also very good. Z3NCDU25.20.04M (904L) The proprietary material introduced by French company HS, is an ultra-low carbon, high nickel-chromium austenitic stainless steel with excellent corrosion resistance and excellent resistance to non-oxidizing acids such as sulfuric acid, phosphoric acid, acetic acid and formic acid Good corrosion resistance, neutral chloride ion medium has good resistance to pitting corrosion, and has good resistance to stress corrosion, crevice corrosion properties. In various concentrations below 70 ℃ sulfuric acid, atmospheric pressure at various concentrations, various temperatures of acetic acid, acid and acetic acid mixed acid corrosion resistance are good.